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#include "common.h"
#include "patcher.h"
#include "Draw.h"
#include "Camera.h"
CCamera &TheCamera = *(CCamera*)0x6FACF8;
bool
CCamera::IsSphereVisible(const CVector ¢er, float radius, const CMatrix *mat)
{
RwV3d c;
c = *(RwV3d*)¢er;
RwV3dTransformPoints(&c, &c, 1, &mat->m_matrix);
if(c.y + radius < CDraw::GetNearClipZ()) return false;
if(c.y - radius > CDraw::GetFarClipZ()) return false;
if(c.x*m_vecFrustumNormals[0].x + c.y*m_vecFrustumNormals[0].y > radius) return false;
if(c.x*m_vecFrustumNormals[1].x + c.y*m_vecFrustumNormals[1].y > radius) return false;
if(c.y*m_vecFrustumNormals[2].y + c.z*m_vecFrustumNormals[2].z > radius) return false;
if(c.y*m_vecFrustumNormals[3].y + c.z*m_vecFrustumNormals[3].z > radius) return false;
return true;
}
bool
CCamera::IsPointVisible(const CVector ¢er, const CMatrix *mat)
{
RwV3d c;
c = *(RwV3d*)¢er;
RwV3dTransformPoints(&c, &c, 1, &mat->m_matrix);
if(c.y < CDraw::GetNearClipZ()) return false;
if(c.y > CDraw::GetFarClipZ()) return false;
if(c.x*m_vecFrustumNormals[0].x + c.y*m_vecFrustumNormals[0].y > 0.0f) return false;
if(c.x*m_vecFrustumNormals[1].x + c.y*m_vecFrustumNormals[1].y > 0.0f) return false;
if(c.y*m_vecFrustumNormals[2].y + c.z*m_vecFrustumNormals[2].z > 0.0f) return false;
if(c.y*m_vecFrustumNormals[3].y + c.z*m_vecFrustumNormals[3].z > 0.0f) return false;
return true;
}
bool
CCamera::IsBoxVisible(RwV3d *box, const CMatrix *mat)
{
int i;
int frustumTests[6] = { 0 };
RwV3dTransformPoints(box, box, 8, &mat->m_matrix);
for(i = 0; i < 8; i++){
if(box[i].y < CDraw::GetNearClipZ()) frustumTests[0]++;
if(box[i].y > CDraw::GetFarClipZ()) frustumTests[1]++;
if(box[i].x*m_vecFrustumNormals[0].x + box[i].y*m_vecFrustumNormals[0].y > 0.0f) frustumTests[2]++;
if(box[i].x*m_vecFrustumNormals[1].x + box[i].y*m_vecFrustumNormals[1].y > 0.0f) frustumTests[3]++;
// Why not test z?
// if(box[i].y*m_vecFrustumNormals[2].y + box[i].z*m_vecFrustumNormals[2].z > 0.0f) frustumTests[4]++;
// if(box[i].y*m_vecFrustumNormals[3].y + box[i].z*m_vecFrustumNormals[3].z > 0.0f) frustumTests[5]++;
}
for(i = 0; i < 6; i++)
if(frustumTests[i] == 8)
return false; // Box is completely outside of one plane
return true;
}
STARTPATCHES
InjectHook(0x42C760, &CCamera::IsSphereVisible, PATCH_JUMP);
ENDPATCHES
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