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#ifndef COMMON_GRAPHICS_APP_H
#define COMMON_GRAPHICS_APP_H
#include "Bullet3Common/b3Vector3.h"
#include "CommonRenderInterface.h"
#include "CommonWindowInterface.h"
#include "CommonCameraInterface.h"
struct DrawGridData
{
int gridSize;
float upOffset;
int upAxis;
float gridColor[4];
DrawGridData()
:gridSize(10),
upOffset(0.001f),
upAxis(1)
{
gridColor[0] = 0.6f;
gridColor[1] = 0.6f;
gridColor[2] = 0.6f;
gridColor[3] = 1.f;
}
};
enum EnumSphereLevelOfDetail
{
SPHERE_LOD_POINT_SPRITE=0,
SPHERE_LOD_LOW,
SPHERE_LOD_MEDIUM,
SPHERE_LOD_HIGH,
};
struct CommonGraphicsApp
{
class CommonWindowInterface* m_window;
struct CommonRenderInterface* m_renderer;
struct CommonParameterInterface* m_parameterInterface;
struct Common2dCanvasInterface* m_2dCanvasInterface;
bool m_leftMouseButton;
bool m_middleMouseButton;
bool m_rightMouseButton;
float m_wheelMultiplier;
float m_mouseMoveMultiplier;
float m_mouseXpos;
float m_mouseYpos;
bool m_mouseInitialized;
float m_backgroundColorRGB[3];
CommonGraphicsApp()
:m_window(0),
m_renderer(0),
m_parameterInterface(0),
m_2dCanvasInterface(0),
m_leftMouseButton(false),
m_middleMouseButton(false),
m_rightMouseButton(false),
m_wheelMultiplier(0.01f),
m_mouseMoveMultiplier(0.4f),
m_mouseXpos(0.f),
m_mouseYpos(0.f),
m_mouseInitialized(false)
{
m_backgroundColorRGB[0] = 0.9;
m_backgroundColorRGB[1] = 0.9;
m_backgroundColorRGB[2] = 1;
}
virtual ~CommonGraphicsApp()
{
}
virtual void dumpNextFrameToPng(const char* pngFilename){}
virtual void dumpFramesToVideo(const char* mp4Filename){}
virtual void getBackgroundColor(float* red, float* green, float* blue) const
{
if (red)
*red = m_backgroundColorRGB[0];
if (green)
*green = m_backgroundColorRGB[1];
if (blue)
*blue = m_backgroundColorRGB[2];
}
virtual void setBackgroundColor(float red, float green, float blue)
{
m_backgroundColorRGB[0] = red;
m_backgroundColorRGB[1] = green;
m_backgroundColorRGB[2] = blue;
}
virtual void setMouseWheelMultiplier(float mult)
{
m_wheelMultiplier = mult;
}
virtual float getMouseWheelMultiplier() const
{
return m_wheelMultiplier;
}
virtual void setMouseMoveMultiplier(float mult)
{
m_mouseMoveMultiplier = mult;
}
virtual float getMouseMoveMultiplier() const
{
return m_mouseMoveMultiplier;
}
virtual void drawGrid(DrawGridData data=DrawGridData()) = 0;
virtual void setUpAxis(int axis) = 0;
virtual int getUpAxis() const = 0;
virtual void swapBuffer() = 0;
virtual void drawText( const char* txt, int posX, int posY) = 0;
virtual void drawText3D( const char* txt, float posX, float posZY, float posZ, float size)=0;
virtual int registerCubeShape(float halfExtentsX,float halfExtentsY, float halfExtentsZ, int textureIndex = -1, float textureScaling = 1)=0;
virtual int registerGraphicsUnitSphereShape(EnumSphereLevelOfDetail lod, int textureId=-1) = 0;
virtual void registerGrid(int xres, int yres, float color0[4], float color1[4])=0;
void defaultMouseButtonCallback( int button, int state, float x, float y)
{
if (button==0)
m_leftMouseButton= (state==1);
if (button==1)
m_middleMouseButton= (state==1);
if (button==2)
m_rightMouseButton= (state==1);
m_mouseXpos = x;
m_mouseYpos = y;
m_mouseInitialized = true;
}
void defaultMouseMoveCallback( float x, float y)
{
if (m_window && m_renderer)
{
CommonCameraInterface* camera = m_renderer->getActiveCamera();
bool isAltPressed = m_window->isModifierKeyPressed(B3G_ALT);
bool isControlPressed = m_window->isModifierKeyPressed(B3G_CONTROL);
if (isAltPressed || isControlPressed)
{
float xDelta = x-m_mouseXpos;
float yDelta = y-m_mouseYpos;
float cameraDistance = camera->getCameraDistance();
float pitch = camera->getCameraPitch();
float yaw = camera->getCameraYaw();
float targPos[3];
float camPos[3];
camera->getCameraTargetPosition(targPos);
camera->getCameraPosition(camPos);
b3Vector3 cameraPosition = b3MakeVector3(b3Scalar(camPos[0]),
b3Scalar(camPos[1]),
b3Scalar(camPos[2]));
b3Vector3 cameraTargetPosition = b3MakeVector3( b3Scalar(targPos[0]),
b3Scalar(targPos[1]),
b3Scalar(targPos[2]));
b3Vector3 cameraUp = b3MakeVector3(0,0,0);
cameraUp[camera->getCameraUpAxis()] = 1.f;
if (m_leftMouseButton)
{
// if (b3Fabs(xDelta)>b3Fabs(yDelta))
// {
pitch -= xDelta*m_mouseMoveMultiplier;
// } else
// {
yaw += yDelta*m_mouseMoveMultiplier;
// }
}
if (m_middleMouseButton)
{
cameraTargetPosition += cameraUp * yDelta*0.01;
b3Vector3 fwd = cameraTargetPosition-cameraPosition;
b3Vector3 side = cameraUp.cross(fwd);
side.normalize();
cameraTargetPosition += side * xDelta*0.01;
}
if (m_rightMouseButton)
{
cameraDistance -= xDelta*0.01f;
cameraDistance -= yDelta*0.01f;
if (cameraDistance<1)
cameraDistance=1;
if (cameraDistance>1000)
cameraDistance=1000;
}
camera->setCameraDistance(cameraDistance);
camera->setCameraPitch(pitch);
camera->setCameraYaw(yaw);
camera->setCameraTargetPosition(cameraTargetPosition[0],cameraTargetPosition[1],cameraTargetPosition[2]);
}
}//m_window && m_renderer
m_mouseXpos = x;
m_mouseYpos = y;
m_mouseInitialized = true;
}
// void defaultKeyboardCallback(int key, int state)
// {
// }
void defaultWheelCallback( float deltax, float deltay)
{
if (m_renderer)
{
b3Vector3 cameraTargetPosition, cameraPosition, cameraUp = b3MakeVector3(0,0,0);
cameraUp[getUpAxis()] = 1;
CommonCameraInterface* camera = m_renderer->getActiveCamera();
camera->getCameraPosition(cameraPosition);
camera->getCameraTargetPosition(cameraTargetPosition);
if (!m_leftMouseButton)
{
float cameraDistance = camera->getCameraDistance();
if (deltay<0 || cameraDistance>1)
{
cameraDistance -= deltay*0.01f;
if (cameraDistance<1)
cameraDistance=1;
camera->setCameraDistance(cameraDistance);
} else
{
b3Vector3 fwd = cameraTargetPosition-cameraPosition;
fwd.normalize();
cameraTargetPosition += fwd*deltay*m_wheelMultiplier;//todo: expose it in the GUI?
}
} else
{
if (b3Fabs(deltax)>b3Fabs(deltay))
{
b3Vector3 fwd = cameraTargetPosition-cameraPosition;
b3Vector3 side = cameraUp.cross(fwd);
side.normalize();
cameraTargetPosition += side * deltax*m_wheelMultiplier;
} else
{
cameraTargetPosition -= cameraUp * deltay*m_wheelMultiplier;
}
}
camera->setCameraTargetPosition(cameraTargetPosition[0],cameraTargetPosition[1],cameraTargetPosition[2]);
}
}
};
#endif //COMMON_GRAPHICS_APP_H
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