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comparison main.c @ 4:035d3880da04

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render text with number of elements on screen
author Dennis C. M. <dennis@denniscm.com>
date Mon, 12 Jun 2023 23:10:08 +0100
parents e4003f606e07
children 6be2faa7ed6e
comparison
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3:e4003f606e07 4:035d3880da04
1 #include <stdio.h> 1 #include "utils.h"
2 #include <GL/glut.h>
3 2
4 3
5 #define HEIGHT 1080 4 #define HEIGHT 1080
6 #define WIDTH 1920 5 #define WIDTH 1920
7 6
25 24
26 25
27 void display() { 26 void display() {
28 glClear(GL_COLOR_BUFFER_BIT); 27 glClear(GL_COLOR_BUFFER_BIT);
29 glBegin(GL_QUADS); 28 glBegin(GL_QUADS);
30 /*
31 glVertex2f(100.0, 100.0); // Top left
32 glVertex2f(150.0, 100.0); // Top right
33 glVertex2f(150.0, 300.0); // Bottom right
34 glVertex2f(100.0, 300.0); // Bottom left
35 29
36 glVertex2f(160.0, 100.0); 30 float x = 1;
37 glVertex2f(210.0, 100.0); 31 float rect_width = 5.0;
38 glVertex2f(210.0, 300.0); 32 float space = 5.0;
39 glVertex2d(160.0, 300.0); 33 int max_rects = floor((WIDTH - rect_width) / (rect_width + space)) + x;
40 */
41 34
42 float rect_width = 5.0; 35 int rect_counter = 0;
43 float space = 10.0; 36 while (rect_counter < max_rects) {
37 glVertex2f(x, 100.0);
38 glVertex2f(x + rect_width, 100.0);
39 glVertex2f(x + rect_width, HEIGHT - 300);
40 glVertex2d(x, HEIGHT - 300);
44 41
45 for (float pos_x = 100.0; pos_x < 500.0; pos_x += 10.0) { 42 x += rect_width + space;
46 glVertex2f(pos_x, 100.0); 43 rect_counter++;
47 glVertex2f(pos_x + rect_width, 100.0);
48 glVertex2f(pos_x + rect_width, 300.0);
49 glVertex2d(pos_x, 300.0);
50 } 44 }
51 45
52 glEnd(); 46 glEnd();
47
48 char text[256];
49 sprintf(text, "Number of elements: %i", rect_counter);
50 render_text(text, 20.0, HEIGHT - 200);
53 glFlush(); 51 glFlush();
54 } 52 }
55 53
56 54
57 int main(int argc, char** argv) { 55 int main(int argc, char** argv) {