first commit

src/vector.h

@@ -0,0 +1,68 @@
+#ifndef VECTOR_INCLUDED
+#define VECTOR_INCLUDED
+
+#include <stdbool.h>
+
+typedef struct {
+	float x;
+	float y;
+	float z;
+} Vector3;
+
+typedef struct {
+	float x;
+	float y;
+	float z;
+	float w;
+} Vector4;
+
+typedef struct {
+	float data[4][4];
+} Matrix4;
+
+typedef struct {
+	float data[3][3];
+} Matrix3;
+
+typedef struct {
+	Vector3 origin;
+	Vector3 direction;
+} Ray;
+
+typedef struct {
+	Vector3 center;
+	float   radius;
+} Sphere;
+
+float deg2rad(float deg);
+
+Matrix4 translate_matrix(Vector3 v, float f);
+Matrix4 identity_matrix(void);
+Matrix4 scale_matrix(Vector3 v);
+Matrix4 rotate_matrix_x(float angle);
+Matrix4 rotate_matrix_y(float angle);
+Matrix4 rotate_matrix_z(float angle);
+Matrix4 lookat_matrix(Vector3 pos, Vector3 front, Vector3 up);
+Matrix4 ortho_matrix(float left, float right, float bottom, float top, float near, float far);
+Matrix4 perspective_matrix(float fov, float aspect, float near, float far);
+
+void print_matrix(Matrix4 m);
+
+float   norm2_of(Vector3 v);
+float   norm_of(Vector3 v);
+Vector3 normalize(Vector3 v);
+Vector3 scale(Vector3 v, float f);
+Vector3 combine(Vector3 u, Vector3 v, float a, float b);
+Vector3 combine4(Vector3 u, Vector3 v, Vector3 g, Vector3 t, float a, float b, float c, float d);
+Vector3 cross(Vector3 u, Vector3 v);
+
+Vector3 mulv(Vector3 a, Vector3 b);
+
+Vector4 ldotv(Vector4 v, Matrix4 m);
+Vector4 rdotv(Matrix4 m, Vector4 v);
+float   dotv(Vector3 u, Vector3 v);
+Matrix4 dotm(Matrix4 a, Matrix4 b);
+Matrix4 transpose(Matrix4 m);
+bool invert(Matrix4 a, Matrix4 *inv);
+
+#endif