algo-animator: main.c annotate

annotate main.c @ 14:d055228ca9a6

printing text with custom font

author	Dennis C. M. <dennis@denniscm.com>
date	Sun, 25 Jun 2023 15:51:39 +0100
parents	074bde2db09a
children	e2fcfcb43fee

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
6 40a8bdbe2005 Refactor to array of structures Dennis C. M. <dennis@denniscm.com> parents: 5 diff changeset	11 #define WINDOW_HEIGHT 1080
40a8bdbe2005 Refactor to array of structures Dennis C. M. <dennis@denniscm.com> parents: 5 diff changeset	12 #define WINDOW_WIDTH 1920
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	13 #define OFFSET 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
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	18 /* Global variables */
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	19
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	20 FT_Library ft_library;
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	21 FT_Face ft_face;
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	22
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	23 char algos[4][50] = {
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	24 "Bubble sort",
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	25 "Selection sort",
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	26 "Insertion sort",
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	27 "Quick sort"
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	28 };
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	29
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	30 int selected_algo = 0;
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	31 int refresh_counter = 0;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	32 int iter_counter = 0;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	33 int arr_size;
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	34
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	35 int* arr;
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	36
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	37 bool run;
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	38
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	39
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	40 /* Algorithms */
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	41
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	42 // Bubble sort
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	43 struct BubbleSortInfo {
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	44 int step;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	45 int i;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	46 };
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	47
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	48 struct BubbleSortInfo bs = {1, 0};
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	49
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	50 void bubble_sort() {
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	51 if (bs.i < arr_size - bs.step - 1) {
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	52 int current = arr[bs.i];
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	53 int next = arr[bs.i + 1];
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	54
11 aaecc9b7ca9c testing glutTimerFunc Dennis C. M. <dennis@denniscm.com> parents: 10 diff changeset	55 if (current > next) {
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	56 arr[bs.i + 1] = current;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	57 arr[bs.i] = next;
11 aaecc9b7ca9c testing glutTimerFunc Dennis C. M. <dennis@denniscm.com> parents: 10 diff changeset	58 }
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	59
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	60 bs.i++;
11 aaecc9b7ca9c testing glutTimerFunc Dennis C. M. <dennis@denniscm.com> parents: 10 diff changeset	61 } else {
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	62 bs.step++;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	63 bs.i = 0;
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	64 }
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	65 }
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	66
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	67
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	68 /* Helper functions */
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	69
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	70 void create_array() {
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	71 arr_size = floor((WINDOW_WIDTH - RECT_WIDTH) / (RECT_WIDTH + SPACE)) + 1;
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	72 arr = (int)malloc(arr_size sizeof(int));
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	73
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	74 srand(time(NULL));
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	75
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	76 int min = OFFSET;
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	77 int max = WINDOW_HEIGHT - OFFSET;
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	78
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	79 for (int i = 0; i < arr_size; i++) {
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	80 arr[i] = rand() % ((max - min) + 1) + min;
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	81 }
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	82 }
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	83
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	84
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	85 bool array_sorted() {
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	86 for (int i = 0; i < arr_size - 1; i++) {
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	87 if (arr[i] > arr[i + 1]) {
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	88 return false;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	89 }
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	90 }
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	91
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	92 return true;
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	93 }
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	94
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	95
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	96 void algo_selector(int direction) {
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	97 int selection = selected_algo + direction;
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	98 int lower = 0;
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	99 int upper = (sizeof(algos) / sizeof(algos[0])) - 1;
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	100
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	101 if (selection >= lower && selection <= upper) {
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	102 selected_algo = selection;
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	103 }
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	104 }
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	105
2 ea3c427d922d draw a weird filled rectangle Dennis C. M. <dennis@denniscm.com> parents: 0 diff changeset	106
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	107 /* Render functions */
8 f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	108
f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	109 void render_text(int x, int y, char* text) {
f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	110
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	111 // Get glyph index from character code
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	112 FT_UInt glyph_index = FT_Get_Char_Index(ft_face, 'A');
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	113
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	114 if (glyph_index == 0) {
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	115 fprintf(stderr, "Given character code has no glyph image in the face\n");
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	116 exit(1);
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	117 }
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	118
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	119 // Load glyph image
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	120 if (FT_Load_Glyph(ft_face, glyph_index, FT_LOAD_DEFAULT)) {
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	121 fprintf(stderr, "Failed to load glyph.\n");
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	122 exit(1);
8 f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	123 }
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	124
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	125 // Render glyph
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	126 if (FT_Render_Glyph(ft_face->glyph, FT_RENDER_MODE_NORMAL)) {
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	127 fprintf(stderr, "Failed to render glyph.\n");
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	128 exit(1);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	129 }
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	130
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	131 FT_GlyphSlot slot = ft_face->glyph;
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	132 FT_Bitmap* glyph_bitmap = &slot->bitmap;
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	133
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	134 glRasterPos2f(x, y);
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	135 glDrawPixels(
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	136 glyph_bitmap->width,
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	137 glyph_bitmap->rows,
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	138 GL_LUMINANCE,
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	139 GL_UNSIGNED_BYTE,
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	140 glyph_bitmap->buffer
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	141 );
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	142 }
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	143
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	144
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	145 void display() {
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	146 glClear(GL_COLOR_BUFFER_BIT);
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	147
3 e4003f606e07 draw multiple rectangles with loop Dennis C. M. <dennis@denniscm.com> parents: 2 diff changeset	148 glBegin(GL_QUADS);
e4003f606e07 draw multiple rectangles with loop Dennis C. M. <dennis@denniscm.com> parents: 2 diff changeset	149
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	150 int x = 0;
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	151 for (int i = 0; i < arr_size; i++) {
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	152
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	153 // Bottom left
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	154 glVertex2f(x, OFFSET);
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	155
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	156 // Top left
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	157 glVertex2f(x, arr[i]);
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	158
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	159 // Top right
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	160 glVertex2f(x + RECT_WIDTH, arr[i]);
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	161
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	162 // Bottom right
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	163 glVertex2f(x + RECT_WIDTH, OFFSET);
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	164
f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	165 x += RECT_WIDTH + SPACE;
3 e4003f606e07 draw multiple rectangles with loop Dennis C. M. <dennis@denniscm.com> parents: 2 diff changeset	166 }
e4003f606e07 draw multiple rectangles with loop Dennis C. M. <dennis@denniscm.com> parents: 2 diff changeset	167
e4003f606e07 draw multiple rectangles with loop Dennis C. M. <dennis@denniscm.com> parents: 2 diff changeset	168 glEnd();
6 40a8bdbe2005 Refactor to array of structures Dennis C. M. <dennis@denniscm.com> parents: 5 diff changeset	169
7 f159eec07daf refactor Dennis C. M. <dennis@denniscm.com> parents: 6 diff changeset	170 // Render text
4 035d3880da04 render text with number of elements on screen Dennis C. M. <dennis@denniscm.com> parents: 3 diff changeset	171 char text[256];
9 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 sprintf(text, "Algorithm: %s", algos[selected_algo]);
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	174 render_text(20, WINDOW_HEIGHT - 50, text);
8 f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	175
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	176 sprintf(text, "Number of elements: %i", arr_size);
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	177 render_text(20, WINDOW_HEIGHT - 75, text);
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	178
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	179 sprintf(text, "Iterations: %i", iter_counter);
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	180 render_text(20, WINDOW_HEIGHT - 100, text);
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	181
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	182 render_text(20, OFFSET - 50, "Press 'a' or 's' to select an algorithm");
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	183 render_text(20, OFFSET - 75, "Press 'enter' to run the algorithm");
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	184 render_text(20, OFFSET - 100, "Press 'r' to reset array");
8 f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	185
f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	186 glutSwapBuffers();
f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	187 }
f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	188
6 40a8bdbe2005 Refactor to array of structures Dennis C. M. <dennis@denniscm.com> parents: 5 diff changeset	189
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	190 /* Refresh function */
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	191
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	192 void idle() {
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	193 if (run) {
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	194 bubble_sort();
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	195 refresh_counter++;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	196 iter_counter++;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	197
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	198 if (refresh_counter == 90) {
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	199 glutPostRedisplay();
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	200 refresh_counter = 0;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	201 }
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	202
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	203 } else {
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	204 glutPostRedisplay();
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	205 }
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	206
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	207 if (array_sorted()) {
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	208 run = false;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	209 }
8 f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	210 }
f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	211
f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	212
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	213 /* User input handler */
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	214
8 f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	215 void keyboard(unsigned char key, int x, int y) {
f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	216
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	217 // s
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	218 if (key == 115) {
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	219 algo_selector(1);
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	220 }
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	221
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	222 // a
9 b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	223 if (key == 97) {
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	224 algo_selector(-1);
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	225 }
b7da0083b706 removing struct? Dennis C. M. <dennis@denniscm.com> parents: 8 diff changeset	226
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	227 // r
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	228 if (key == 114) {
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	229 create_array();
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	230 iter_counter = 0;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	231 refresh_counter = 0;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	232 run = false;
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	233 bs = (struct BubbleSortInfo){0, 0};
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	234 }
9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	235
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	236 // enter
8 f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	237 if (key == 13) {
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	238 run = true;
7 f159eec07daf refactor Dennis C. M. <dennis@denniscm.com> parents: 6 diff changeset	239 }
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	240 }
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	241
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	242
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	243 /* Set up functions */
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	244
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	245 void setup_gl() {
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	246
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	247 // Set background dark
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	248 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	249
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	250 // 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	251 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	252 glPointSize(5.0);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	253
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	254 // 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	255 glMatrixMode(GL_PROJECTION);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	256 glLoadIdentity();
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	257
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	258 /*
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	259 * Creates projection matrix
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	260 * 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	261 * 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	262 */
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	263 gluOrtho2D(0, WINDOW_WIDTH, 0, WINDOW_HEIGHT);
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	264
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	265 /*
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	266 * This fucking line... I spent a day rendering random symbols
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	267 * 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	268 * does not match the padding expected by GL.
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	269 */
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	270
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	271 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	272 }
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	273
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	274
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	275 void setup_freetype() {
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	276
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	277 // Init library
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	278 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	279 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	280 exit(1);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	281 }
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	282
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	283 // Load font
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	284 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	285 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	286 exit(1);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	287 }
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	288
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	289 // Set font size
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	290 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	291 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	292 FT_Done_Face(ft_face);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	293 FT_Done_FreeType(ft_library);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	294
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	295 exit(1);
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	296 }
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	297 }
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	298
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	299
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	300 int main(int argc, char** argv) {
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	301 create_array();
7 f159eec07daf refactor Dennis C. M. <dennis@denniscm.com> parents: 6 diff changeset	302
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	303 glutInit(&argc, argv);
8 f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	304 glutInitDisplayMode(GLUT_DOUBLE \| GLUT_RGB);
6 40a8bdbe2005 Refactor to array of structures Dennis C. M. <dennis@denniscm.com> parents: 5 diff changeset	305 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	306 glutCreateWindow("Algorithm animator");
074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	307
14 d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	308 setup_gl();
d055228ca9a6 printing text with custom font Dennis C. M. <dennis@denniscm.com> parents: 13 diff changeset	309 setup_freetype();
13 074bde2db09a printing text with custom font but incorrect letters Dennis C. M. <dennis@denniscm.com> parents: 12 diff changeset	310
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	311 glutDisplayFunc(display);
8 f7af7255705e text flickering fixed Dennis C. M. <dennis@denniscm.com> parents: 7 diff changeset	312 glutKeyboardFunc(keyboard);
12 9ba546527bc2 fixing algo speed Dennis C. M. <dennis@denniscm.com> parents: 11 diff changeset	313 glutIdleFunc(idle);
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	314 glutMainLoop();
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	315
10 f4e0c266321a bubble sort Dennis C. M. <dennis@denniscm.com> parents: 9 diff changeset	316 free(arr);
7 f159eec07daf refactor Dennis C. M. <dennis@denniscm.com> parents: 6 diff changeset	317
0 6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	318 return 0;
6882194679b5 draw a point Dennis C. M. <dennis@denniscm.com> parents: diff changeset	319 }

Mercurial > public > algo-animator

annotate main.c @ 14:d055228ca9a6