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