Frustum.java

net.minecraft.client.renderer.culling.Frustum

信息

• 全限定名：net.minecraft.client.renderer.culling.Frustum
• 类型：public class
• 包：net.minecraft.client.renderer.culling
• 源码路径：src/main/java/net/minecraft/client/renderer/culling/Frustum.java
• 起始行号：L13
• 职责：

  TODO

字段/常量

• OFFSET_STEP

  • 类型: int
  • 修饰符: public static final
  • 源码定位: L14
  • 说明:

    TODO

• intersection

  • 类型: FrustumIntersection
  • 修饰符: private final
  • 源码定位: L15
  • 说明:

    TODO

• matrix

  • 类型: Matrix4f
  • 修饰符: private final
  • 源码定位: L16
  • 说明:

    TODO

• viewVector

  • 类型: Vector4f
  • 修饰符: private
  • 源码定位: L17
  • 说明:

    TODO

• camX

  • 类型: double
  • 修饰符: private
  • 源码定位: L18
  • 说明:

    TODO

• camY

  • 类型: double
  • 修饰符: private
  • 源码定位: L19
  • 说明:

    TODO

• camZ

  • 类型: double
  • 修饰符: private
  • 源码定位: L20
  • 说明:

    TODO

内部类/嵌套类型

• 无

构造器

public Frustum(Matrix4fc modelView, Matrix4f projection) @ L22

• 构造器名：Frustum
• 源码定位：L22
• 修饰符：public

参数:

• modelView: Matrix4fc
• projection: Matrix4f

说明:

TODO

public Frustum(Frustum frustum) @ L26

• 构造器名：Frustum
• 源码定位：L26
• 修饰符：public

参数:

• frustum: Frustum

说明:

TODO

方法

下面的方法块按源码顺序生成。

public void set(Frustum frustum) @ L30

• 方法名：set
• 源码定位：L30
• 返回类型：void
• 修饰符：public

参数:

• frustum: Frustum

说明:

TODO

public Frustum offset(float offset) @ L39

• 方法名：offset
• 源码定位：L39
• 返回类型：Frustum
• 修饰符：public

参数:

• offset: float

说明:

TODO

public Frustum offsetToFullyIncludeCameraCube(int cubeSize) @ L46

• 方法名：offsetToFullyIncludeCameraCube
• 源码定位：L46
• 返回类型：Frustum
• 修饰符：public

参数:

• cubeSize: int

说明:

TODO

public void prepare(double camX, double camY, double camZ) @ L73

• 方法名：prepare
• 源码定位：L73
• 返回类型：void
• 修饰符：public

参数:

• camX: double
• camY: double
• camZ: double

说明:

TODO

private void calculateFrustum(Matrix4fc modelView, Matrix4f projection) @ L79

• 方法名：calculateFrustum
• 源码定位：L79
• 返回类型：void
• 修饰符：private

参数:

• modelView: Matrix4fc
• projection: Matrix4f

说明:

TODO

public boolean isVisible(AABB bb) @ L85

• 方法名：isVisible
• 源码定位：L85
• 返回类型：boolean
• 修饰符：public

参数:

• bb: AABB

说明:

TODO

public int cubeInFrustum(BoundingBox bb) @ L90

• 方法名：cubeInFrustum
• 源码定位：L90
• 返回类型：int
• 修饰符：public

参数:

• bb: BoundingBox

说明:

TODO

private int cubeInFrustum(double minX, double minY, double minZ, double maxX, double maxY, double maxZ) @ L94

• 方法名：cubeInFrustum
• 源码定位：L94
• 返回类型：int
• 修饰符：private

参数:

• minX: double
• minY: double
• minZ: double
• maxX: double
• maxY: double
• maxZ: double

说明:

TODO

public boolean pointInFrustum(double x, double y, double z) @ L104

• 方法名：pointInFrustum
• 源码定位：L104
• 返回类型：boolean
• 修饰符：public

参数:

• x: double
• y: double
• z: double

说明:

TODO

public Vector4f[] getFrustumPoints() @ L108

• 方法名：getFrustumPoints
• 源码定位：L108
• 返回类型：Vector4f[]
• 修饰符：public

参数:

• 无

说明:

TODO

public double getCamX() @ L129

• 方法名：getCamX
• 源码定位：L129
• 返回类型：double
• 修饰符：public

参数:

• 无

说明:

TODO

public double getCamY() @ L133

• 方法名：getCamY
• 源码定位：L133
• 返回类型：double
• 修饰符：public

参数:

• 无

说明:

TODO

public double getCamZ() @ L137

• 方法名：getCamZ
• 源码定位：L137
• 返回类型：double
• 修饰符：public

参数:

• 无

说明:

TODO

代码

@OnlyIn(Dist.CLIENT)
public class Frustum {
    public static final int OFFSET_STEP = 4;
    private final FrustumIntersection intersection = new FrustumIntersection();
    private final Matrix4f matrix = new Matrix4f();
    private Vector4f viewVector;
    private double camX;
    private double camY;
    private double camZ;
 
    public Frustum(Matrix4fc modelView, Matrix4f projection) {
        this.calculateFrustum(modelView, projection);
    }
 
    public Frustum(Frustum frustum) {
        this.set(frustum);
    }
 
    public void set(Frustum frustum) {
        this.intersection.set(frustum.matrix);
        this.matrix.set(frustum.matrix);
        this.camX = frustum.camX;
        this.camY = frustum.camY;
        this.camZ = frustum.camZ;
        this.viewVector = frustum.viewVector;
    }
 
    public Frustum offset(float offset) {
        this.camX = this.camX + this.viewVector.x * offset;
        this.camY = this.camY + this.viewVector.y * offset;
        this.camZ = this.camZ + this.viewVector.z * offset;
        return this;
    }
 
    public Frustum offsetToFullyIncludeCameraCube(int cubeSize) {
        double camX1 = Math.floor(this.camX / cubeSize) * cubeSize;
        double camY1 = Math.floor(this.camY / cubeSize) * cubeSize;
        double camZ1 = Math.floor(this.camZ / cubeSize) * cubeSize;
        double camX2 = Math.ceil(this.camX / cubeSize) * cubeSize;
        double camY2 = Math.ceil(this.camY / cubeSize) * cubeSize;
 
        for (double camZ2 = Math.ceil(this.camZ / cubeSize) * cubeSize;
            this.intersection
                    .intersectAab(
                        (float)(camX1 - this.camX),
                        (float)(camY1 - this.camY),
                        (float)(camZ1 - this.camZ),
                        (float)(camX2 - this.camX),
                        (float)(camY2 - this.camY),
                        (float)(camZ2 - this.camZ)
                    )
                != -2;
            this.camZ = this.camZ - this.viewVector.z() * 4.0F
        ) {
            this.camX = this.camX - this.viewVector.x() * 4.0F;
            this.camY = this.camY - this.viewVector.y() * 4.0F;
        }
 
        return this;
    }
 
    public void prepare(double camX, double camY, double camZ) {
        this.camX = camX;
        this.camY = camY;
        this.camZ = camZ;
    }
 
    private void calculateFrustum(Matrix4fc modelView, Matrix4f projection) {
        projection.mul(modelView, this.matrix);
        this.intersection.set(this.matrix);
        this.viewVector = this.matrix.transformTranspose(new Vector4f(0.0F, 0.0F, 1.0F, 0.0F));
    }
 
    public boolean isVisible(AABB bb) {
        int intersectionResult = this.cubeInFrustum(bb.minX, bb.minY, bb.minZ, bb.maxX, bb.maxY, bb.maxZ);
        return intersectionResult == -2 || intersectionResult == -1;
    }
 
    public int cubeInFrustum(BoundingBox bb) {
        return this.cubeInFrustum(bb.minX(), bb.minY(), bb.minZ(), bb.maxX() + 1, bb.maxY() + 1, bb.maxZ() + 1);
    }
 
    private int cubeInFrustum(double minX, double minY, double minZ, double maxX, double maxY, double maxZ) {
        float x1 = (float)(minX - this.camX);
        float y1 = (float)(minY - this.camY);
        float z1 = (float)(minZ - this.camZ);
        float x2 = (float)(maxX - this.camX);
        float y2 = (float)(maxY - this.camY);
        float z2 = (float)(maxZ - this.camZ);
        return this.intersection.intersectAab(x1, y1, z1, x2, y2, z2);
    }
 
    public boolean pointInFrustum(double x, double y, double z) {
        return this.intersection.testPoint((float)(x - this.camX), (float)(y - this.camY), (float)(z - this.camZ));
    }
 
    public Vector4f[] getFrustumPoints() {
        Vector4f[] frustumPoints = new Vector4f[]{
            new Vector4f(-1.0F, -1.0F, -1.0F, 1.0F),
            new Vector4f(1.0F, -1.0F, -1.0F, 1.0F),
            new Vector4f(1.0F, 1.0F, -1.0F, 1.0F),
            new Vector4f(-1.0F, 1.0F, -1.0F, 1.0F),
            new Vector4f(-1.0F, -1.0F, 1.0F, 1.0F),
            new Vector4f(1.0F, -1.0F, 1.0F, 1.0F),
            new Vector4f(1.0F, 1.0F, 1.0F, 1.0F),
            new Vector4f(-1.0F, 1.0F, 1.0F, 1.0F)
        };
        Matrix4f clipToWorldMatrix = this.matrix.invert(new Matrix4f());
 
        for (int i = 0; i < 8; i++) {
            clipToWorldMatrix.transform(frustumPoints[i]);
            frustumPoints[i].div(frustumPoints[i].w());
        }
 
        return frustumPoints;
    }
 
    public double getCamX() {
        return this.camX;
    }
 
    public double getCamY() {
        return this.camY;
    }
 
    public double getCamZ() {
        return this.camZ;
    }
}

引用的其他类

• BoundingBox

  • 引用位置: 参数

• AABB

  • 引用位置: 参数