void CameraManager::GenerateRays(PintRaycastData* rays, udword nb_rays, float max_dist)
{
GLint viewPort[4];
GLdouble modelMatrix[16];
GLdouble projMatrix[16];
glGetIntegerv(GL_VIEWPORT, viewPort);
glGetDoublev(GL_MODELVIEW_MATRIX, modelMatrix);
glGetDoublev(GL_PROJECTION_MATRIX, projMatrix);
const float fScreenWidth = float(gScreenWidth)/float(nb_rays);
const float fScreenHeight = float(gScreenHeight)/float(nb_rays);
const Point Origin = GetCameraPos();
udword Offset=0;
for(udword j=0;j<nb_rays;j++)
{
const udword yi = udword(fScreenHeight*float(j));
for(udword i=0;i<nb_rays;i++)
{
const udword xi = udword(fScreenWidth*float(i));
rays[Offset].mOrigin = Origin;
rays[Offset].mDir = ComputeWorldRay(viewPort, modelMatrix, projMatrix, xi, yi);
rays[Offset].mMaxDist = max_dist;
Offset++;
}
}
}
void CapsuleMeshQuery::MotionCallback(int x, int y)
{
if(mValidHit)
{
Point Dir = ComputeWorldRay(x, y);
mWorld.SetTrans(GetCameraPos() + Dir*mDist - mLocalHit);
}
}
void OBBMeshQuery::MotionCallback(int x, int y)
{
if(mValidHit)
{
Point Dir = ComputeWorldRay(x, y);
mBox.mCenter = GetCameraPos() + Dir*mDist - mLocalHit;
}
}
void CapsuleMeshQuery::MouseCallback(int button, int state, int x, int y)
{
mValidHit = false;
if(!button && !state)
{
Point Dir = ComputeWorldRay(x, y);
float s[2];
if(RayCapsuleOverlap(GetCameraPos(), Dir, mCapsule, s))
{
mValidHit = true;
mDist = s[0];
Point hit = GetCameraPos() + Dir * mDist;
mLocalHit = hit - (Point)mWorld.GetTrans();
}
}
}
void OBBMeshQuery::MouseCallback(int button, int state, int x, int y)
{
mValidHit = false;
if(!button && !state)
{
Point Dir = ComputeWorldRay(x, y);
float d;
Point hit;
if(RayOBB(GetCameraPos(), Dir, mBox, d, hit))
{
mValidHit = true;
mDist = d;
mLocalHit = hit - mBox.mCenter;
}
}
}
