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-rw-r--r--sdl/glframe.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/sdl/glframe.h b/sdl/glframe.h
new file mode 100644
index 0000000..fa5c991
--- /dev/null
+++ b/sdl/glframe.h
@@ -0,0 +1,21 @@
+#ifndef _GLFRAME_H_
+#define _GLFRAME_H_
+
+#include "math3d.h"
+
+typedef struct
+{
+ M3DVector3f v_location; /* location */
+ M3DVector3f v_forward; /* where am I heading */
+ M3DVector3f v_up; /* which way is up */
+} GLFrame;
+
+/* function prototypes */
+void reset_glframe(GLFrame *frame);
+void get_camera_orientation(GLFrame *frame, M3DMatrix44f m);
+void apply_camera_transform(GLFrame *frame);
+void move_forward(GLFrame *frame, float delta);
+void rotate_local_y(GLFrame *frame, float angle);
+
+#endif
+