70 lines
1.9 KiB
Java
70 lines
1.9 KiB
Java
package net.minecraft.world.phys;
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import com.mojang.serialization.Codec;
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import java.util.List;
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import net.minecraft.Util;
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import net.minecraft.util.Mth;
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public class Vec2 {
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public static final Vec2 ZERO = new Vec2(0.0F, 0.0F);
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public static final Vec2 ONE = new Vec2(1.0F, 1.0F);
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public static final Vec2 UNIT_X = new Vec2(1.0F, 0.0F);
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public static final Vec2 NEG_UNIT_X = new Vec2(-1.0F, 0.0F);
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public static final Vec2 UNIT_Y = new Vec2(0.0F, 1.0F);
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public static final Vec2 NEG_UNIT_Y = new Vec2(0.0F, -1.0F);
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public static final Vec2 MAX = new Vec2(Float.MAX_VALUE, Float.MAX_VALUE);
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public static final Vec2 MIN = new Vec2(Float.MIN_VALUE, Float.MIN_VALUE);
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public static final Codec<Vec2> CODEC = Codec.FLOAT
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.listOf()
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.comapFlatMap(list -> Util.fixedSize(list, 2).map(listx -> new Vec2((Float)listx.get(0), (Float)listx.get(1))), vec2 -> List.of(vec2.x, vec2.y));
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public final float x;
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public final float y;
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public Vec2(float x, float y) {
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this.x = x;
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this.y = y;
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}
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public Vec2 scale(float factor) {
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return new Vec2(this.x * factor, this.y * factor);
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}
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public float dot(Vec2 other) {
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return this.x * other.x + this.y * other.y;
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}
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public Vec2 add(Vec2 other) {
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return new Vec2(this.x + other.x, this.y + other.y);
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}
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public Vec2 add(float value) {
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return new Vec2(this.x + value, this.y + value);
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}
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public boolean equals(Vec2 other) {
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return this.x == other.x && this.y == other.y;
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}
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public Vec2 normalized() {
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float f = Mth.sqrt(this.x * this.x + this.y * this.y);
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return f < 1.0E-4F ? ZERO : new Vec2(this.x / f, this.y / f);
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}
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public float length() {
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return Mth.sqrt(this.x * this.x + this.y * this.y);
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}
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public float lengthSquared() {
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return this.x * this.x + this.y * this.y;
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}
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public float distanceToSqr(Vec2 other) {
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float f = other.x - this.x;
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float g = other.y - this.y;
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return f * f + g * g;
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}
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public Vec2 negated() {
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return new Vec2(-this.x, -this.y);
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}
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}
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