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[DEV] add reflect calculation

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This commit is contained in:
Edouard DUPIN 2022-01-03 23:52:48 +01:00
parent 6028c42d0d
commit 84f92a1841
2 changed files with 19 additions and 1 deletions
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4
src/org/atriasoft/etk/math/Vector2b.java
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@ -70,6 +70,10 @@ public record Vector2b(
public static final Vector2b FALSE = new Vector2b(false, false); public static final Vector2b FALSE = new Vector2b(false, false);
public static final Vector2b TRUE = new Vector2b(true, true); public static final Vector2b TRUE = new Vector2b(true, true);
public static final Vector2b FALSE_FALSE = FALSE;
public static final Vector2b TRUE_TRUE = TRUE;
public static final Vector2b TRUE_FALSE = new Vector2b(true, false);
public static final Vector2b FALSE_TRUE = new Vector2b(false, true);
@Override @Override
public String toString() { public String toString() {

16
src/org/atriasoft/etk/math/Vector3f.java
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@ -176,7 +176,8 @@ public record Vector3f(
@CheckReturnValue @CheckReturnValue
public Vector3f divide(final float val) { public Vector3f divide(final float val) {
if (val != 0.0f) { if (val != 0.0f) {
return new Vector3f(this.x / val, this.y / val, this.z / val); float tmp = 1.0f / val;
return new Vector3f(this.x * tmp, this.y * tmp, this.z * tmp);
} }
throw new IllegalArgumentException("divice by 0 (vector3f)"); throw new IllegalArgumentException("divice by 0 (vector3f)");
} }
@ -307,6 +308,16 @@ public record Vector3f(
return new Vector3f(-this.x, -this.y, -this.z); return new Vector3f(-this.x, -this.y, -this.z);
} }
/**
* Reflect the current vector with the input normal
* @param normal Normal to reflect on
* @return the new reflect vector
*/
@CheckReturnValue
public Vector3f reflect(Vector3f normal) {
return this.less(normal.multiply(this.dot(normal) * 2.0f));
}
/** /**
* In-Equality compare operator with an other object. * In-Equality compare operator with an other object.
* @param obj Reference on the comparing object * @param obj Reference on the comparing object
@ -556,6 +567,9 @@ public record Vector3f(
*/ */
public static final Vector3f ZERO = new Vector3f(0, 0, 0); public static final Vector3f ZERO = new Vector3f(0, 0, 0);
public static final Vector3f ONE = new Vector3f(1, 1, 1); public static final Vector3f ONE = new Vector3f(1, 1, 1);
public static final Vector3f ONE_X = new Vector3f(1, 0, 0);
public static final Vector3f ONE_Y = new Vector3f(0, 1, 0);
public static final Vector3f ONE_Z = new Vector3f(0, 0, 1);
public static final Vector3f MAX = new Vector3f(Float.MAX_VALUE, Float.MAX_VALUE, Float.MAX_VALUE); public static final Vector3f MAX = new Vector3f(Float.MAX_VALUE, Float.MAX_VALUE, Float.MAX_VALUE);
public static final Vector3f MIN = new Vector3f(-Float.MAX_VALUE, -Float.MAX_VALUE, -Float.MAX_VALUE); public static final Vector3f MIN = new Vector3f(-Float.MAX_VALUE, -Float.MAX_VALUE, -Float.MAX_VALUE);
public static final Vector3f VALUE_2 = new Vector3f(2, 2, 2); public static final Vector3f VALUE_2 = new Vector3f(2, 2, 2);