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package net.minecraft.server; public class Vec3D { public double a; public double b; public double c; private static final Vec3D tempVec = new Vec3D(0, 0, 0); public Vec3D(double d0, double d1, double d2) { if (d0 == -0.0D) { d0 = 0.0D; } if (d1 == -0.0D) { d1 = 0.0D; } if (d2 == -0.0D) { d2 = 0.0D; } this.a = d0; this.b = d1; this.c = d2; } public Vec3D(BaseBlockPosition baseblockposition) { this(baseblockposition.getX(), baseblockposition.getY(), baseblockposition.getZ()); } public static Vec3D set(double x, double y, double z) { tempVec.a = x; tempVec.b = y; tempVec.c = z; return tempVec; } public Vec3D a() { double d0 = MathHelper.sqrt(this.a * this.a + this.b * this.b + this.c * this.c); return d0 < 1.0E-4D ? new Vec3D(0.0D, 0.0D, 0.0D) : new Vec3D(this.a / d0, this.b / d0, this.c / d0); } public double b(Vec3D vec3d) { return this.a * vec3d.a + this.b * vec3d.b + this.c * vec3d.c; } public Vec3D d(Vec3D vec3d) { return this.a(vec3d.a, vec3d.b, vec3d.c); } public Vec3D a(double d0, double d1, double d2) { return this.add(-d0, -d1, -d2); } public Vec3D e(Vec3D vec3d) { return this.add(vec3d.a, vec3d.b, vec3d.c); } public Vec3D add(double d0, double d1, double d2) { return new Vec3D(this.a + d0, this.b + d1, this.c + d2); } public double distanceSquared(Vec3D vec3d) { double d0 = vec3d.a - this.a; double d1 = vec3d.b - this.b; double d2 = vec3d.c - this.c; return d0 * d0 + d1 * d1 + d2 * d2; } public double b() { return MathHelper.sqrt(this.a * this.a + this.b * this.b + this.c * this.c); } public Vec3D a(Vec3D vec3d, double d0) { double d1 = vec3d.a - this.a; double d2 = vec3d.b - this.b; double d3 = vec3d.c - this.c; if (d1 * d1 < 1.0000000116860974E-7D) { return null; } else { double d4 = (d0 - this.a) / d1; return d4 >= 0.0D && d4 <= 1.0D ? new Vec3D(this.a + d1 * d4, this.b + d2 * d4, this.c + d3 * d4) : null; } } public Vec3D b(Vec3D vec3d, double d0) { double d1 = vec3d.a - this.a; double d2 = vec3d.b - this.b; double d3 = vec3d.c - this.c; if (d2 * d2 < 1.0000000116860974E-7D) { return null; } else { double d4 = (d0 - this.b) / d2; return d4 >= 0.0D && d4 <= 1.0D ? new Vec3D(this.a + d1 * d4, this.b + d2 * d4, this.c + d3 * d4) : null; } } public Vec3D c(Vec3D vec3d, double d0) { double d1 = vec3d.a - this.a; double d2 = vec3d.b - this.b; double d3 = vec3d.c - this.c; if (d3 * d3 < 1.0000000116860974E-7D) { return null; } else { double d4 = (d0 - this.c) / d3; return d4 >= 0.0D && d4 <= 1.0D ? new Vec3D(this.a + d1 * d4, this.b + d2 * d4, this.c + d3 * d4) : null; } } public String toString() { return "(" + this.a + ", " + this.b + ", " + this.c + ")"; } public Vec3D a(float f) { float f1 = MathHelper.cos(f); float f2 = MathHelper.sin(f); double x = this.a; double y = this.b * f1 + this.c * f2; double z = this.c * f1 - this.b * f2; return new Vec3D(x, y, z); } public Vec3D b(float f) { float f1 = MathHelper.cos(f); float f2 = MathHelper.sin(f); double x = this.a * f1 + this.c * f2; double y = this.b; double z = this.c * f1 - this.a * f2; return new Vec3D(x, y, z); } }
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