diff options
Diffstat (limited to 'Minecraft.Client/FrustumData.cpp')
| -rw-r--r-- | Minecraft.Client/FrustumData.cpp | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/Minecraft.Client/FrustumData.cpp b/Minecraft.Client/FrustumData.cpp new file mode 100644 index 00000000..177a51f7 --- /dev/null +++ b/Minecraft.Client/FrustumData.cpp @@ -0,0 +1,90 @@ +#include "stdafx.h" +#include "FrustumData.h" + +float** m_Frustum; + + +FrustumData::FrustumData() +{ + m_Frustum = new float *[16]; + for( int i = 0; i < 16; i++ ) m_Frustum[i] = new float[16]; + proj = floatArray( 16 ); + modl = floatArray( 16 ); + clip = floatArray( 16 ); +} + +FrustumData::~FrustumData() +{ + delete[] proj.data; + delete[] modl.data; + delete[] clip.data; + for( int i = 0; i < 16; i++ ) delete[] m_Frustum[i]; + delete[] m_Frustum; +} + +bool FrustumData::pointInFrustum(float x, float y, float z) +{ + for (int i = 0; i < 6; i++) + { + if (m_Frustum[i][A] * x + m_Frustum[i][B] * y + m_Frustum[i][C] * z + m_Frustum[i][D] <= 0) + { + return false; + } + } + + return true; +} + +bool FrustumData::sphereInFrustum(float x, float y, float z, float radius) +{ + for (int i = 0; i < 6; i++) + { + if (m_Frustum[i][A] * x + m_Frustum[i][B] * y + m_Frustum[i][C] * z + m_Frustum[i][D] <= -radius) + { + return false; + } + } + + return true; +} + +bool FrustumData::cubeFullyInFrustum(double x1, double y1, double z1, double x2, double y2, double z2) +{ + for (int i = 0; i < 6; i++) + { + if (!(m_Frustum[i][A] * (x1) + m_Frustum[i][B] * (y1) + m_Frustum[i][C] * (z1) + m_Frustum[i][D] > 0)) return false; + if (!(m_Frustum[i][A] * (x2) + m_Frustum[i][B] * (y1) + m_Frustum[i][C] * (z1) + m_Frustum[i][D] > 0)) return false; + if (!(m_Frustum[i][A] * (x1) + m_Frustum[i][B] * (y2) + m_Frustum[i][C] * (z1) + m_Frustum[i][D] > 0)) return false; + if (!(m_Frustum[i][A] * (x2) + m_Frustum[i][B] * (y2) + m_Frustum[i][C] * (z1) + m_Frustum[i][D] > 0)) return false; + if (!(m_Frustum[i][A] * (x1) + m_Frustum[i][B] * (y1) + m_Frustum[i][C] * (z2) + m_Frustum[i][D] > 0)) return false; + if (!(m_Frustum[i][A] * (x2) + m_Frustum[i][B] * (y1) + m_Frustum[i][C] * (z2) + m_Frustum[i][D] > 0)) return false; + if (!(m_Frustum[i][A] * (x1) + m_Frustum[i][B] * (y2) + m_Frustum[i][C] * (z2) + m_Frustum[i][D] > 0)) return false; + if (!(m_Frustum[i][A] * (x2) + m_Frustum[i][B] * (y2) + m_Frustum[i][C] * (z2) + m_Frustum[i][D] > 0)) return false; + } + + return true; +} + +bool FrustumData::cubeInFrustum(double x1, double y1, double z1, double x2, double y2, double z2) +{ + for (int i = 0; i < 6; i++) + { + if (m_Frustum[i][A] * (x1) + m_Frustum[i][B] * (y1) + m_Frustum[i][C] * (z1) + m_Frustum[i][D] > 0) continue; + if (m_Frustum[i][A] * (x2) + m_Frustum[i][B] * (y1) + m_Frustum[i][C] * (z1) + m_Frustum[i][D] > 0) continue; + if (m_Frustum[i][A] * (x1) + m_Frustum[i][B] * (y2) + m_Frustum[i][C] * (z1) + m_Frustum[i][D] > 0) continue; + if (m_Frustum[i][A] * (x2) + m_Frustum[i][B] * (y2) + m_Frustum[i][C] * (z1) + m_Frustum[i][D] > 0) continue; + if (m_Frustum[i][A] * (x1) + m_Frustum[i][B] * (y1) + m_Frustum[i][C] * (z2) + m_Frustum[i][D] > 0) continue; + if (m_Frustum[i][A] * (x2) + m_Frustum[i][B] * (y1) + m_Frustum[i][C] * (z2) + m_Frustum[i][D] > 0) continue; + if (m_Frustum[i][A] * (x1) + m_Frustum[i][B] * (y2) + m_Frustum[i][C] * (z2) + m_Frustum[i][D] > 0) continue; + if (m_Frustum[i][A] * (x2) + m_Frustum[i][B] * (y2) + m_Frustum[i][C] * (z2) + m_Frustum[i][D] > 0) continue; + + return false; + } + + return true; +} + +bool FrustumData::isVisible(AABB *aabb) +{ + return cubeInFrustum(aabb->x0, aabb->y0, aabb->z0, aabb->x1, aabb->y1, aabb->z1); +}
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