algo-animator: main.c annotate

annotate main.c @ 21:8a5a7aee69ce

add description

author	Dennis C. M. <dennis@denniscm.com>
date	Tue, 27 Jun 2023 20:04:25 +0100
parents	fc44102980fb
children

rev	line source
8 f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	1 #include <stdio.h>
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	2 #include <stdlib.h>
7 f159eec07daf refactor Dennis C. M. <dennis@denniscm.com> parents: 6 diff changeset	3 #include <GL/glut.h>
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	4 #include <math.h>
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	5 #include <time.h>
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	6 #include <stdbool.h>
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	7 #include <ft2build.h>
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	8 #include FT_FREETYPE_H
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	9
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	10
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	11 #define WINDOW_WIDTH 1920
6 40a8bdbe2005 Refactor to array of structures Dennis C. M. <dennis@denniscm.com> parents: 5 diff changeset	12 #define WINDOW_HEIGHT 1080
16 2ded5f1f544a refactor variable name Dennis C. M. <dennis@denniscm.com> parents: 15 diff changeset	13 #define VPADDING 150
7 f159eec07daf refactor Dennis C. M. <dennis@denniscm.com> parents: 6 diff changeset	14 #define RECT_WIDTH 5
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	15 #define SPACE 1
7 f159eec07daf refactor Dennis C. M. <dennis@denniscm.com> parents: 6 diff changeset	16
f159eec07daf refactor Dennis C. M. <dennis@denniscm.com> parents: 6 diff changeset	17
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	18 /* Helper functions */
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	19
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	20 struct Element {
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	21 float value;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	22 bool current;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	23 };
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	24
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	25 struct Element *arr;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	26 int arr_size;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	27
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	28 void create_array() {
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	29 arr_size = WINDOW_WIDTH / (RECT_WIDTH + SPACE);
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	30 arr = malloc(arr_size * sizeof(struct Element));
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	31
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	32 float rect_increase = (WINDOW_HEIGHT - VPADDING * 2) / (float)(arr_size - 1);
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	33
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	34 for (int i = 1; i <= arr_size; i++) {
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	35 arr[i - 1].value = i * rect_increase;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	36 arr[i - 1].current = false;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	37 }
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	38 }
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	39
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	40
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	41 void swap_elements(int x, int y) {
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	42 struct Element temp = arr[x];
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	43 arr[x] = arr[y];
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	44 arr[y] = temp;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	45 }
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	46
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	47
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	48 void randomize_array() {
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	49 srand(time(NULL));
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	50
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	51 // Fisher-Yates shuffle
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	52 for (int i = arr_size - 1; i > 0; i--) {
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	53 int j = rand() % (i + 1);
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	54
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	55 // Swap
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	56 swap_elements(i, j);
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	57 }
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	58 }
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	59
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	60
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	61 bool array_sorted() {
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	62 for (int i = 0; i < arr_size - 1; i++) {
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	63 if (arr[i].value > arr[i + 1].value) {
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	64 return false;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	65 }
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	66 }
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	67
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	68 return true;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	69 }
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	70
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	71
18 6a5c5b137348 implement method to run the algo function given the selected algo Dennis C. M. <dennis@denniscm.com> parents: 17 diff changeset	72 struct Algo {
6a5c5b137348 implement method to run the algo function given the selected algo Dennis C. M. <dennis@denniscm.com> parents: 17 diff changeset	73 char name[50];
6a5c5b137348 implement method to run the algo function given the selected algo Dennis C. M. <dennis@denniscm.com> parents: 17 diff changeset	74 void (*function)();
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	75 };
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	76
19 a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	77 struct Algo algos[2];
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	78 int selected_algo = 0;
20 fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	79
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	80 void algo_selector(int direction) {
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	81 int selection = selected_algo + direction;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	82 int lower = 0;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	83 int upper = (sizeof(algos) / sizeof(algos[0])) - 1;
20 fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	84
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	85 if (selection >= lower && selection <= upper) {
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	86 selected_algo = selection;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	87 }
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	88 }
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	89
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	90
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	91 /* Algorithms */
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	92
19 a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	93 // Just some variables to store the state of the running algorithm
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	94 struct AlgoState {
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	95 int a;
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	96 int b;
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	97 int c;
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	98 };
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	99
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	100 struct AlgoState as;
19 a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	101
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	102 void reset_state() {
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	103 as.a = 0;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	104 as.b = 0;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	105 as.c = 0;
19 a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	106 }
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	107
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	108
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	109 void bubble_sort() {
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	110
19 a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	111 /*
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	112 * a: Index of the current selection
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	113 * b: Index boundary of the sorted array
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	114 */
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	115
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	116 if (as.a < arr_size - 1 - as.b) {
20 fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	117 arr[as.a].current = true;
fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	118
fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	119 if (arr[as.a].value > arr[as.a + 1].value) {
19 a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	120 swap_elements(as.a + 1, as.a);
11 aaecc9b7ca9c testing glutTimerFunc Dennis C. M. <dennis@denniscm.com> parents: 10 diff changeset	121 }
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	122
19 a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	123 as.a++;
11 aaecc9b7ca9c testing glutTimerFunc Dennis C. M. <dennis@denniscm.com> parents: 10 diff changeset	124 } else {
19 a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	125 as.b++;
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	126 as.a = 0;
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	127 }
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	128 }
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	129
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	130
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	131 void selection_sort() {
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	132
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	133 /*
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	134 * a: Index of current selection
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	135 * b: Index of boundary of sorted array
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	136 * c: Index of the minimum element
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	137 */
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	138
19 a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	139
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	140 if (as.a < arr_size) {
20 fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	141 arr[as.a].current = true;
fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	142
fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	143 if (arr[as.a].value < arr[as.c].value) {
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	144
19 a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	145 // Save new minimum
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	146 as.c = as.a;
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	147 }
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	148
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	149 as.a++;
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	150 } else {
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	151 swap_elements(as.b, as.c);
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	152
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	153 as.b++;
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	154 as.a = as.b;
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	155 as.c = as.a;
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	156 }
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	157 }
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	158
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	159
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	160 void quick_sort() {
17 fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	161
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	162 }
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	163
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	164
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	165 void insertion_sort() {
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	166
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	167 }
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	168
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	169
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	170 void merge_sort() {
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	171
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	172 }
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	173
2 ea3c427d922d draw a weird filled rectangle Dennis C. M. <dennis@denniscm.com> parents: 0 diff changeset	174
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	175 /* Render functions */
8 f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	176
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	177 FT_Library ft_library;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	178 FT_Face ft_face;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	179
15 e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	180 void render_text(int x, int y, char* text) {
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	181 for (const char c = text; c; c++) {
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	182
15 e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	183 // Get glyph index from character code
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	184 FT_UInt glyph_index = FT_Get_Char_Index(ft_face, *c);
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	185
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	186 if (glyph_index == 0) {
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	187 fprintf(stderr, "Given character code has no glyph image in the face\n");
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	188 exit(1);
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	189 }
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	190
15 e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	191 // Load glyph image
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	192 if (FT_Load_Glyph(ft_face, glyph_index, FT_LOAD_DEFAULT)) {
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	193 fprintf(stderr, "Failed to load glyph.\n");
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	194 exit(1);
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	195 }
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	196
15 e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	197 // Render glyph
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	198 if (FT_Render_Glyph(ft_face->glyph, FT_RENDER_MODE_NORMAL)) {
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	199 fprintf(stderr, "Failed to render glyph.\n");
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	200 exit(1);
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	201 }
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	202
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	203 FT_GlyphSlot slot = ft_face->glyph;
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	204 FT_Bitmap* glyph_bitmap = &slot->bitmap;
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	205
15 e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	206 // Flip the bitmap vertically
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	207 unsigned char* flipped_bitmap = (unsigned char)malloc(glyph_bitmap->width glyph_bitmap->rows);
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	208
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	209 for (int row = 0; row < glyph_bitmap->rows; row++) {
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	210 unsigned char* src_row = glyph_bitmap->buffer + (row * glyph_bitmap->width);
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	211 unsigned char* dest_row = flipped_bitmap + ((glyph_bitmap->rows - row - 1) * glyph_bitmap->width);
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	212 memcpy(dest_row, src_row, glyph_bitmap->width);
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	213 }
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	214
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	215 glyph_bitmap->buffer = flipped_bitmap;
15 e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	216
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	217 // Calculate the adjusted y position based on the glyph's bearing
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	218 int adjusted_y = y + (slot->bitmap_top - glyph_bitmap->rows);
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	219
15 e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	220 glRasterPos2f(x, adjusted_y);
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	221 glDrawPixels(glyph_bitmap->width, glyph_bitmap->rows, GL_LUMINANCE, GL_UNSIGNED_BYTE, glyph_bitmap->buffer);
e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	222
18 6a5c5b137348 implement method to run the algo function given the selected algo Dennis C. M. <dennis@denniscm.com> parents: 17 diff changeset	223 x += slot->advance.x / 64;
15 e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	224 }
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	225 }
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	226
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	227
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	228 int speed = 50;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	229 int iter_counter = 0;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	230
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	231 void display() {
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	232 glClear(GL_COLOR_BUFFER_BIT);
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	233
3 e4003f606e07 draw multiple rectangles with loop Dennis C. M. <dennis@denniscm.com> parents: 2 diff changeset	234 glBegin(GL_QUADS);
e4003f606e07 draw multiple rectangles with loop Dennis C. M. <dennis@denniscm.com> parents: 2 diff changeset	235
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	236 int x = 0;
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	237 for (int i = 0; i < arr_size; i++) {
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	238
20 fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	239 if (arr[i].current) {
fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	240 glColor3f(1.0, 1.0, 1.0);
fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	241 } else {
fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	242 glColor3f(1.0, 0.7569, 0.0);
fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	243 }
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	244
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	245 // Bottom left
16 2ded5f1f544a refactor variable name Dennis C. M. <dennis@denniscm.com> parents: 15 diff changeset	246 glVertex2f(x, VPADDING);
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	247
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	248 // Top left
20 fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	249 glVertex2f(x, VPADDING + arr[i].value);
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	250
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	251 // Top right
20 fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	252 glVertex2f(x + RECT_WIDTH, VPADDING + arr[i].value);
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	253
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	254 // Bottom right
16 2ded5f1f544a refactor variable name Dennis C. M. <dennis@denniscm.com> parents: 15 diff changeset	255 glVertex2f(x + RECT_WIDTH, VPADDING);
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	256
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	257 x += RECT_WIDTH + SPACE;
20 fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	258
fc44102980fb change rectangle color to white when algorithm is selecting it Dennis C. M. <dennis@denniscm.com> parents: 19 diff changeset	259 arr[i].current = false;
3 e4003f606e07 draw multiple rectangles with loop Dennis C. M. <dennis@denniscm.com> parents: 2 diff changeset	260 }
e4003f606e07 draw multiple rectangles with loop Dennis C. M. <dennis@denniscm.com> parents: 2 diff changeset	261
e4003f606e07 draw multiple rectangles with loop Dennis C. M. <dennis@denniscm.com> parents: 2 diff changeset	262 glEnd();
6 40a8bdbe2005 Refactor to array of structures Dennis C. M. <dennis@denniscm.com> parents: 5 diff changeset	263
7 f159eec07daf refactor Dennis C. M. <dennis@denniscm.com> parents: 6 diff changeset	264 // Render text
4 035d3880da04 render text with number of elements on screen Dennis C. M. <dennis@denniscm.com> parents: 3 diff changeset	265 char text[256];
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	266
17 fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	267 // Top: Column 1
18 6a5c5b137348 implement method to run the algo function given the selected algo Dennis C. M. <dennis@denniscm.com> parents: 17 diff changeset	268 sprintf(text, "Algorithm: %s", algos[selected_algo].name);
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	269 render_text(20, WINDOW_HEIGHT - 50, text);
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	270
17 fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	271 sprintf(text, "Speed: %i", speed);
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	272 render_text(20, WINDOW_HEIGHT - 80, text);
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	273
17 fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	274 // Top: Column 2
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	275 sprintf(text, "Number of elements: %i", arr_size);
17 fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	276 render_text(500, WINDOW_HEIGHT - 50, text);
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	277
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	278 sprintf(text, "Iterations: %i", iter_counter);
17 fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	279 render_text(500, WINDOW_HEIGHT - 80, text);
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	280
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	281
17 fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	282 // Bottom: Column 1
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	283 render_text(20, VPADDING - 50, "Press a or s to select an algorithm.");
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	284 render_text(20, VPADDING - 80, "Press u or d to modify speed.");
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	285 render_text(20, VPADDING - 110, "Press r to randomize the array.");
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	286
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	287 // Bottom: Column 2
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	288 render_text(800, VPADDING - 50, "Press enter to run the algorithm.");
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	289 render_text(800, VPADDING - 80, "Press p to pause the algorithm.");
8 f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	290
f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	291 glutSwapBuffers();
f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	292 }
f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	293
6 40a8bdbe2005 Refactor to array of structures Dennis C. M. <dennis@denniscm.com> parents: 5 diff changeset	294
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	295 /* Refresh function */
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	296
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	297
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	298 bool run;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	299 int refresh_counter = 0;
8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	300
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	301 void idle() {
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	302 if (run) {
18 6a5c5b137348 implement method to run the algo function given the selected algo Dennis C. M. <dennis@denniscm.com> parents: 17 diff changeset	303 algos[selected_algo].function();
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	304 refresh_counter++;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	305 iter_counter++;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	306
17 fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	307 if (refresh_counter == speed) {
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	308 glutPostRedisplay();
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	309 refresh_counter = 0;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	310 }
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	311
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	312 } else {
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	313 glutPostRedisplay();
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	314 }
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	315
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	316 if (array_sorted()) {
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	317 run = false;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	318 }
8 f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	319 }
f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	320
f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	321
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	322 /* User input handler */
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	323
8 f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	324 void keyboard(unsigned char key, int x, int y) {
f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	325
17 fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	326 // s: Next algorithm
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	327 if (key == 115) {
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	328 algo_selector(1);
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	329 }
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	330
17 fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	331 // a: Previous algorithm
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	332 if (key == 97) {
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	333 algo_selector(-1);
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	334 }
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	335
17 fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	336 // r: Reset state
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	337 if (key == 114) {
17 fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	338 randomize_array();
16 2ded5f1f544a refactor variable name Dennis C. M. <dennis@denniscm.com> parents: 15 diff changeset	339
2ded5f1f544a refactor variable name Dennis C. M. <dennis@denniscm.com> parents: 15 diff changeset	340 // Reset state
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	341 iter_counter = 0;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	342 refresh_counter = 0;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	343 run = false;
16 2ded5f1f544a refactor variable name Dennis C. M. <dennis@denniscm.com> parents: 15 diff changeset	344
2ded5f1f544a refactor variable name Dennis C. M. <dennis@denniscm.com> parents: 15 diff changeset	345 // Reset algo steps
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	346 reset_state();
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	347 }
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	348
17 fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	349 // u: Increase speed
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	350 if (key == 117) {
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	351 speed++;
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	352 }
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	353
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	354 // d: reduce speed
fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	355 if (key == 100) {
19 a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	356 if (speed > 1) {
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	357 speed--;
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	358 }
17 fba66d02f1cf add randomize func and refactor UI Dennis C. M. <dennis@denniscm.com> parents: 16 diff changeset	359 }
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	360
18 6a5c5b137348 implement method to run the algo function given the selected algo Dennis C. M. <dennis@denniscm.com> parents: 17 diff changeset	361 // enter: Run program
6a5c5b137348 implement method to run the algo function given the selected algo Dennis C. M. <dennis@denniscm.com> parents: 17 diff changeset	362 if (key == 13) {
6a5c5b137348 implement method to run the algo function given the selected algo Dennis C. M. <dennis@denniscm.com> parents: 17 diff changeset	363 run = true;
6a5c5b137348 implement method to run the algo function given the selected algo Dennis C. M. <dennis@denniscm.com> parents: 17 diff changeset	364 }
6a5c5b137348 implement method to run the algo function given the selected algo Dennis C. M. <dennis@denniscm.com> parents: 17 diff changeset	365
19 a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	366 // p: Pause program
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	367 if (key == 112) {
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	368 run = false;
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	369 }
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	370 }
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	371
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	372
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	373 /* Set up functions */
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	374
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	375 void setup_gl() {
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	376
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	377 // Set background dark
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	378 glClearColor(0.0, 0.0, 0.0, 1.0);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	379
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	380 // Set point color and size to 1 pixel
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	381 glColor3f(1.0, 0.7569, 0.0);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	382 glPointSize(5.0);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	383
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	384 // Matrix projection and reset with identity
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	385 glMatrixMode(GL_PROJECTION);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	386 glLoadIdentity();
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	387
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	388 /*
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	389 * Creates projection matrix
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	390 * x increases from left to right (0 to WINDOW_WIDTH)
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	391 * y increases from bottom to top (0 to WINDOW_HEIGHT)
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	392 */
15 e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	393
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	394 gluOrtho2D(0, WINDOW_WIDTH, 0, WINDOW_HEIGHT);
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	395
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	396 /*
15 e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	397 * This fucking line... I spent a day rendering weird symbols
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	398 * because the padding that adds FreeType to each row of the bitmap
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	399 * does not match the padding expected by GL.
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	400 */
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	401
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	402 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	403 }
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	404
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	405
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	406 void setup_freetype() {
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	407
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	408 // Init library
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	409 if (FT_Init_FreeType(&ft_library)) {
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	410 fprintf(stderr, "Failed to initialize FreeType library\n");
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	411 exit(1);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	412 }
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	413
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	414 // Load font
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	415 if (FT_New_Face(ft_library, "fonts/JetBrainsMono-Regular.ttf", 0, &ft_face)) {
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	416 fprintf(stderr, "Failed to load font\n");
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	417 exit(1);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	418 }
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	419
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	420 // Set font size
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	421 if (FT_Set_Pixel_Sizes(ft_face, 0, 24)) {
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	422 fprintf(stderr, "Failed to set font size.\n");
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	423 FT_Done_Face(ft_face);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	424 FT_Done_FreeType(ft_library);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	425
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	426 exit(1);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	427 }
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	428 }
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	429
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	430
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	431 int main(int argc, char** argv) {
18 6a5c5b137348 implement method to run the algo function given the selected algo Dennis C. M. <dennis@denniscm.com> parents: 17 diff changeset	432 strcpy(algos[0].name, "Bubble sort");
6a5c5b137348 implement method to run the algo function given the selected algo Dennis C. M. <dennis@denniscm.com> parents: 17 diff changeset	433 algos[0].function = &bubble_sort;
6a5c5b137348 implement method to run the algo function given the selected algo Dennis C. M. <dennis@denniscm.com> parents: 17 diff changeset	434
19 a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	435 strcpy(algos[1].name, "Selection sort");
a027304ec75d implement selection sort Dennis C. M. <dennis@denniscm.com> parents: 18 diff changeset	436 algos[1].function = &selection_sort;
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	437
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	438 create_array();
7 f159eec07daf refactor Dennis C. M. <dennis@denniscm.com> parents: 6 diff changeset	439
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	440 glutInit(&argc, argv);
8 f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	441 glutInitDisplayMode(GLUT_DOUBLE \| GLUT_RGB);
6 40a8bdbe2005 Refactor to array of structures Dennis C. M. <dennis@denniscm.com> parents: 5 diff changeset	442 glutInitWindowSize(WINDOW_WIDTH, WINDOW_HEIGHT);
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	443 glutCreateWindow("Algorithm animator");
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	444
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	445 setup_gl();
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	446 setup_freetype();
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	447
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	448 glutDisplayFunc(display);
8 f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	449 glutKeyboardFunc(keyboard);
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	450 glutIdleFunc(idle);
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	451 glutMainLoop();
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	452
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	453 free(arr);
7 f159eec07daf refactor Dennis C. M. <dennis@denniscm.com> parents: 6 diff changeset	454
15 e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	455 FT_Done_Face(ft_face);
21 8a5a7aee69ce add description Dennis C. M. <dennis@denniscm.com> parents: 20 diff changeset	456 FT_Done_FreeType(ft_library);
15 e2fcfcb43fee fix vertical character alignment Dennis C. M. <dennis@denniscm.com> parents: 14 diff changeset	457
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	458 return 0;
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	459 }

Mercurial > public > algo-animator

annotate main.c @ 21:8a5a7aee69ce