//static
void LLViewerCamera::updateFrustumPlanes(LLCamera& camera, BOOL ortho, BOOL zflip, BOOL no_hacks)
{
GLint* viewport = (GLint*) gGLViewport;
GLdouble* model = gGLModelView;
GLdouble* proj = gGLProjection;
GLdouble objX,objY,objZ;
LLVector3 frust[8];
if (no_hacks)
{
gluUnProject(viewport[0],viewport[1],0,model,proj,viewport,&objX,&objY,&objZ);
frust[0].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0]+viewport[2],viewport[1],0,model,proj,viewport,&objX,&objY,&objZ);
frust[1].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0]+viewport[2],viewport[1]+viewport[3],0,model,proj,viewport,&objX,&objY,&objZ);
frust[2].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0],viewport[1]+viewport[3],0,model,proj,viewport,&objX,&objY,&objZ);
frust[3].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0],viewport[1],1,model,proj,viewport,&objX,&objY,&objZ);
frust[4].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0]+viewport[2],viewport[1],1,model,proj,viewport,&objX,&objY,&objZ);
frust[5].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0]+viewport[2],viewport[1]+viewport[3],1,model,proj,viewport,&objX,&objY,&objZ);
frust[6].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0],viewport[1]+viewport[3],1,model,proj,viewport,&objX,&objY,&objZ);
frust[7].setVec((F32)objX,(F32)objY,(F32)objZ);
}
else if (zflip)
{
gluUnProject(viewport[0],viewport[1]+viewport[3],0,model,proj,viewport,&objX,&objY,&objZ);
frust[0].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0]+viewport[2],viewport[1]+viewport[3],0,model,proj,viewport,&objX,&objY,&objZ);
frust[1].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0]+viewport[2],viewport[1],0,model,proj,viewport,&objX,&objY,&objZ);
frust[2].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0],viewport[1],0,model,proj,viewport,&objX,&objY,&objZ);
frust[3].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0],viewport[1]+viewport[3],1,model,proj,viewport,&objX,&objY,&objZ);
frust[4].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0]+viewport[2],viewport[1]+viewport[3],1,model,proj,viewport,&objX,&objY,&objZ);
frust[5].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0]+viewport[2],viewport[1],1,model,proj,viewport,&objX,&objY,&objZ);
frust[6].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0],viewport[1],1,model,proj,viewport,&objX,&objY,&objZ);
frust[7].setVec((F32)objX,(F32)objY,(F32)objZ);
for (U32 i = 0; i < 4; i++)
{
frust[i+4] = frust[i+4]-frust[i];
frust[i+4].normVec();
frust[i+4] = frust[i] + frust[i+4]*camera.getFar();
}
}
else
{
gluUnProject(viewport[0],viewport[1],0,model,proj,viewport,&objX,&objY,&objZ);
frust[0].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0]+viewport[2],viewport[1],0,model,proj,viewport,&objX,&objY,&objZ);
frust[1].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0]+viewport[2],viewport[1]+viewport[3],0,model,proj,viewport,&objX,&objY,&objZ);
frust[2].setVec((F32)objX,(F32)objY,(F32)objZ);
gluUnProject(viewport[0],viewport[1]+viewport[3],0,model,proj,viewport,&objX,&objY,&objZ);
frust[3].setVec((F32)objX,(F32)objY,(F32)objZ);
if (ortho)
{
LLVector3 far_shift = camera.getAtAxis()*camera.getFar()*2.f;
for (U32 i = 0; i < 4; i++)
{
frust[i+4] = frust[i] + far_shift;
}
}
else
{
for (U32 i = 0; i < 4; i++)
{
LLVector3 vec = frust[i] - camera.getOrigin();
vec.normVec();
frust[i+4] = camera.getOrigin() + vec*camera.getFar();
}
}
}
camera.calcAgentFrustumPlanes(frust);
}
//static
void LLViewerCamera::updateFrustumPlanes(LLCamera& camera, BOOL ortho, BOOL zflip, BOOL no_hacks)
{
LLVector3 frust[8];
LLRect view_port(gGLViewport[0],gGLViewport[1]+gGLViewport[3],gGLViewport[0]+gGLViewport[2],gGLViewport[1]);
if (no_hacks)
{
gGL.unprojectf(LLVector3(view_port.mLeft,view_port.mBottom,0.f),gGLModelView,gGLProjection,view_port,frust[0]);
gGL.unprojectf(LLVector3(view_port.mRight,view_port.mBottom,0.f),gGLModelView,gGLProjection,view_port,frust[1]);
gGL.unprojectf(LLVector3(view_port.mRight,view_port.mTop,0.f),gGLModelView,gGLProjection,view_port,frust[2]);
gGL.unprojectf(LLVector3(view_port.mLeft,view_port.mTop,0.f),gGLModelView,gGLProjection,view_port,frust[3]);
gGL.unprojectf(LLVector3(view_port.mLeft,view_port.mBottom,1.f),gGLModelView,gGLProjection,view_port,frust[4]);
gGL.unprojectf(LLVector3(view_port.mRight,view_port.mBottom,1.f),gGLModelView,gGLProjection,view_port,frust[5]);
gGL.unprojectf(LLVector3(view_port.mRight,view_port.mTop,1.f),gGLModelView,gGLProjection,view_port,frust[6]);
gGL.unprojectf(LLVector3(view_port.mLeft,view_port.mTop,1.f),gGLModelView,gGLProjection,view_port,frust[7]);
}
else if (zflip)
{
gGL.unprojectf(LLVector3(view_port.mLeft,view_port.mTop,0.f),gGLModelView,gGLProjection,view_port,frust[0]);
gGL.unprojectf(LLVector3(view_port.mRight,view_port.mTop,0.f),gGLModelView,gGLProjection,view_port,frust[1]);
gGL.unprojectf(LLVector3(view_port.mRight,view_port.mBottom,0.f),gGLModelView,gGLProjection,view_port,frust[2]);
gGL.unprojectf(LLVector3(view_port.mLeft,view_port.mBottom,0.f),gGLModelView,gGLProjection,view_port,frust[3]);
gGL.unprojectf(LLVector3(view_port.mLeft,view_port.mTop,1.f),gGLModelView,gGLProjection,view_port,frust[4]);
gGL.unprojectf(LLVector3(view_port.mRight,view_port.mTop,1.f),gGLModelView,gGLProjection,view_port,frust[5]);
gGL.unprojectf(LLVector3(view_port.mRight,view_port.mBottom,1.f),gGLModelView,gGLProjection,view_port,frust[6]);
gGL.unprojectf(LLVector3(view_port.mLeft,view_port.mBottom,1.f),gGLModelView,gGLProjection,view_port,frust[7]);
for (U32 i = 0; i < 4; i++)
{
frust[i+4] = frust[i+4]-frust[i];
frust[i+4].normVec();
frust[i+4] = frust[i] + frust[i+4]*camera.getFar();
}
}
else
{
gGL.unprojectf(LLVector3(view_port.mLeft,view_port.mBottom,0.f),gGLModelView,gGLProjection,view_port,frust[0]);
gGL.unprojectf(LLVector3(view_port.mRight,view_port.mBottom,0.f),gGLModelView,gGLProjection,view_port,frust[1]);
gGL.unprojectf(LLVector3(view_port.mRight,view_port.mTop,0.f),gGLModelView,gGLProjection,view_port,frust[2]);
gGL.unprojectf(LLVector3(view_port.mLeft,view_port.mTop,0.f),gGLModelView,gGLProjection,view_port,frust[3]);
if (ortho)
{
LLVector3 far_shift = camera.getAtAxis()*camera.getFar()*2.f;
for (U32 i = 0; i < 4; i++)
{
frust[i+4] = frust[i] + far_shift;
}
}
else
{
for (U32 i = 0; i < 4; i++)
{
LLVector3 vec = frust[i] - camera.getOrigin();
vec.normVec();
frust[i+4] = camera.getOrigin() + vec*camera.getFar();
}
}
}
camera.calcAgentFrustumPlanes(frust);
}