System info & network

code/camera.h

@@ -0,0 +1,38 @@
+#ifndef _PIUMA_CAMERA_H_
+#define _PIUMA_CAMERA_H_
+
+#include "lib/types.h"
+#include "lib/math.h"
+
+
+static const v3 r_camera_up_vector = {0,0,1};
+
+struct r_camera_base
+{
+	v3 position;
+	v3 direction;
+	v3 up;
+};
+
+void r_camera_base_look_at(r_camera_base *c, v3 target);
+m4 r_camera_base_view(r_camera_base *c);
+
+
+struct r_camera_fps
+{
+	v3 position;
+	// Forward = +y, Right = +x, Up = +z
+	f32 yaw;
+	f32 pitch;
+};
+
+void r_camera_fps_look_at(r_camera_fps *c, v3 target);
+m4 r_camera_fps_view(r_camera_fps *c);
+v3 r_camera_fps_direction(r_camera_fps *c);
+
+
+m4 r_view_matrix(v3 position, v3 direction, v3 up);
+m4 r_perspective_matrix(f32 fov, f32 aspect_ratio, f32 near_plane, f32 far_plane);
+m4 r_orthographic_matrix(f32 left, f32 right, f32 bottom, f32 top, f32 near, f32 far);
+
+#endif