first commit

Makefile

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+build:
+	gcc mmn_17.c -lglut -lGL -lGLU -lm -o mmn_17
+
+clean:
+	rm mmn_17

mmn_17.c

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+#include <GL/freeglut.h>
+#include <GL/freeglut_std.h>
+#include <GL/gl.h>
+#include <stdio.h>
+#include <math.h>
+
+void display(void) {
+    // Clear screen
+    glClearColor(0.0, 0.0, 0.0, 1.0); // Dark theme :)
+    glClear(GL_COLOR_BUFFER_BIT);
+    glFlush();
+}
+
+void mouseEvent(int button, int state, int x, int y) {
+    
+}
+
+int main(int argc, char** argv) {
+    /* initialize glut and window */
+    glutInit(&argc, argv);
+    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
+    glutInitWindowSize(800, 500);
+    glutInitWindowPosition(450, 450);
+    /* create window and set callbacks */
+    glutCreateWindow("glutLeaveMainLoop is undefined if called from a nested loop");
+    glutDisplayFunc(display);
+    glutMouseFunc(mouseEvent);
+    
+    /* set projection and camera */
+    glMatrixMode(GL_PROJECTION);
+    glLoadIdentity();
+    gluOrtho2D(0.0, 800.0, 0.0, 500.0);
+    
+    glutMainLoop();
+    
+    return 0;
+}

ui.h

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+#ifndef  __UI_BUTTON
+#define __UI_BUTTON
+#include "vec.h"
+
+typedef struct _ui_button {
+    vec3 relative; // Position relative to screen size
+    vec3 absolute; // position in pixels(added to relative)
+    vec3 size; // size in pixels - if screen is too small i am not sure if it is a smart idea to make everything smaller
+    void (*onClick); // instead of passing stuff in, im just gonna put every state variable in global scope to ensure everything lives...
+} ui_button;
+
+#endif

ui_button.h

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+#ifndef  __UI
+#define __UI
+#include "vec.h"
+
+typedef struct _ui_position {
+    vec3 relative;
+    vec3 absolute;
+} ui_pos;
+
+typedef struct _ui_button {
+    ui_pos position;
+    /* x,y - width,height, z - unused */
+    vec3 size; // size in pixels - if screen is too small i am not sure if it is a smart idea to make everything smaller
+    void (*onClick); // instead of passing stuff in, im just gonna put every state variable in global scope to ensure everything lives...
+    char* text;
+} ui_button;
+
+typedef struct _ui_slider {
+    ui_pos position;
+    /* x - width, y - height, z - middle circle radius */
+    vec3 size;
+    float value; // Value will always range between 0 and 1
+} ui_slider;
+
+#endif

vec.c

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+#include "vec.h"
+
+vec3 vec3_new(float x, float y, float z) {
+    vec3 r = { x, y, z };
+    return r;
+}
+
+vec3 vec3_splat(float f) {
+    vec3 r = { f, f, f };
+    return r;
+}
+
+vec3 vec3_add(vec3 a, vec3 b) {
+    vec3 r = { a.x + b.x, a.y + b.y, a.z + b.z };
+    return r;    
+}
+
+vec3 vec3_sub(vec3 a, vec3 b) {
+    vec3 r = { a.x - b.x, a.y - b.y, a.z - b.z };
+    return r;
+}
+float vec3_dot(vec3 a, vec3 b) {
+    return a.x * b.x + a.y * b.y + a.z * b.z;
+}
+
+vec3 vec3_mult(vec3 a, float s) {
+    vec3 r = { a.x * s, a.y * s, a.z * s };
+    return r;
+}

vec.h

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+#ifndef _VEC
+#define _VEC
+
+typedef struct _vec3 {
+    float x;
+    float y;
+    float z;
+} vec3;
+
+const vec3 ZERO = { 0.0, 0.0, 0.0};
+
+vec3 vec3_new(float x, float y, float z);
+vec3 vec3_splat(float f);
+vec3 vec3_add(vec3 a, vec3 b);
+vec3 vec3_sub(vec3 a, vec3 b);
+float vec3_dot(vec3 a, vec3 b);
+vec3 vec3_mult(vec3 a, float s);
+
+#endif