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Kolyah35
2026-03-02 22:04:18 +03:00
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src/client/renderer/culling/FrustumData.h Executable file
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#ifndef NET_MINECRAFT_CLIENT_RENDERER_CULLING__FrustumData_H__
#define NET_MINECRAFT_CLIENT_RENDERER_CULLING__FrustumData_H__
//package net.minecraft.client.renderer.culling;
#include "../../../world/phys/AABB.h"
// We create an enum of the sides so we don't have to call each side 0 or 1.
// This way it makes it more understandable and readable when dealing with frustum sides.
class FrustumData
{
public:
//enum FrustumSide
static const int RIGHT = 0; // The RIGHT side of the frustum
static const int LEFT = 1; // The LEFT side of the frustum
static const int BOTTOM = 2; // The BOTTOM side of the frustum
static const int TOP = 3; // The TOP side of the frustum
static const int BACK = 4; // The BACK side of the frustum
static const int FRONT = 5; // The FRONT side of the frustum
// Like above, instead of saying a number for the ABC and D of the plane, we
// want to be more descriptive.
static const int A = 0; // The X value of the plane's normal
static const int B = 1; // The Y value of the plane's normal
static const int C = 2; // The Z value of the plane's normal
static const int D = 3; // The distance the plane is from the origin
float m_Frustum[16][16];
float proj[16];
float modl[16];
float clip[16];
bool 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 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 cubeFullyInFrustum(float x1, float y1, float z1, float x2, float y2, float 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 cubeInFrustum(float x1, float y1, float z1, float x2, float y2, float 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 isVisible(const AABB& aabb)
{
return cubeInFrustum(aabb.x0, aabb.y0, aabb.z0, aabb.x1, aabb.y1, aabb.z1);
}
};
#endif /*NET_MINECRAFT_CLIENT_RENDERER_CULLING__FrustumData_H__*/