/*
  Copyright (c) 2017 Alex Diener
  
  This software is provided 'as-is', without any express or implied
  warranty. In no event will the authors be held liable for any damages
  arising from the use of this software.
  
  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:
  
  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
  
  Alex Diener alex@ludobloom.com
*/

#ifndef __OrbitCamera_H__
#define __OrbitCamera_H__
#ifdef __cplusplus
extern "C" {
#endif

typedef struct OrbitCamera OrbitCamera;
#define OrbitCamera_superclass Camera

#include "gamemath/Box6f.h"
#include "gamemath/Camera.h"

#define OrbitCamera_ivars \
	Camera_ivars \
	\
	Vector3f cameraFocus; \
	Quaternionf cameraOrientation; \
	float cameraDistance; \
	float minDistance; \
	float maxDistance; \
	float rotateSensitivity; \
	float offsetSensitivity; \
	float zoomSensitivity;

#define OrbitCamera_vtable(self_type) \
	Camera_vtable(self_type)

stemobject_declare(OrbitCamera)

OrbitCamera * OrbitCamera_create(void);
bool OrbitCamera_init(OrbitCamera * self);
void OrbitCamera_dispose(OrbitCamera * self);

void OrbitCamera_rotate(OrbitCamera * self, float offsetX, float offsetY);
void OrbitCamera_offset(OrbitCamera * self, float offsetX, float offsetY, float offsetZ);
void OrbitCamera_zoom(OrbitCamera * self, float offsetY);
void OrbitCamera_frameBoundingBox(OrbitCamera * self, Box6f bounds, float fovYDegrees, float ratio);
Vector3f OrbitCamera_getPosition(OrbitCamera * self);
Quaternionf OrbitCamera_getOrientation(OrbitCamera * self);
Matrix4x4f OrbitCamera_getTransform(OrbitCamera * self);

#ifdef __cplusplus
}
#endif
#endif