Initial commit

utils/utils.h

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+#ifndef OBJECTS_H
+#define OBJECTS_H
+
+#include <windows.h>
+
+// === Vectors ===
+void vector_substruct(int size, float v1[size], float v2[size], float r[size]);
+void cross_product_vectors(float v1[3], float v2[3], float r[3]);
+float dot_product_vectors(float v1[3], float v2[3]);
+void vector_normalize(int size, float coordinates[size]);
+void print_vector(int size, float vector[size]);
+
+// === Matrix ===
+void print_matrix(int size, float matrix[size][size]);
+void matrix_mult_matrix(int size, float matrix1[size][size],
+                        float matrix2[size][size], float result[size][size]);
+void matrix_mult_vector(int size, float matrix[size][size], float vector[size],
+                        float result[size]);
+
+void create_axis_rotate_matrix(int axis, float angle,
+                               float rotate_matrix[3][3]);
+void create_rotate_matrix(float rotate_speed[3], float rotate_matrix[3][3]);
+
+// === Point in scene ===
+struct Point3D {
+  float coordinates[3];
+};
+typedef struct Point3D Point3D;
+void transform_point(Point3D *point, int size,
+                     float translate_matrix[size][size]);
+void create_translate_matrix(Point3D *position, float translate_matrix[4][4],
+                             int k);
+
+// === Screen summary ===
+struct Screen {
+  int width;
+  int height;
+  HDC *hdc;
+  float (*render_matrix)[4][4];
+};
+typedef struct Screen Screen;
+
+// === Point on screen ===
+struct ScreenPoint {
+  int coordinates[2];
+};
+typedef struct ScreenPoint ScreenPoint;
+ScreenPoint convert_to_screen_point(Point3D *point, Screen *screen);
+void draw_line(Screen *screen, ScreenPoint *sp1, ScreenPoint *sp2);
+
+// === Camera in scene ===
+struct Camera {
+  Point3D position;
+  Point3D target;
+  float up[3];
+  float fov;
+  float max_distance;
+  float min_distance;
+  float aspect_ratio;
+};
+typedef struct Camera Camera;
+void create_view_matrix(Camera *camera, float view_matrix[4][4]);
+void create_projection_matrix(Camera *camera, float projection_matrix[4][4]);
+
+// === Composite object in scene ===
+struct Object {
+  Point3D *points;
+  int (*edges)[2];
+  int number_of_points;
+  int number_of_edges;
+  Point3D *position;
+  float (*rotate_speed)[3];
+};
+typedef struct Object Object;
+void transform_object(const Object *object, int size,
+                      float translate_matrix[size][size]);
+void draw_object(const Object *object, Screen *screen);
+Point3D calculate_centroid(const Object *object);
+
+#endif