joltjni: add 4 "loadX" methods

stephengold · Feb 24, 2025 · 010391d · 010391d
1 parent 7036318
commit 010391d
Show file tree

Hide file tree

Showing 3 changed files with 37 additions and 0 deletions.
diff --git a/src/main/java/com/github/stephengold/joltjni/Quat.java b/src/main/java/com/github/stephengold/joltjni/Quat.java
@@ -116,6 +116,16 @@ public Quat(Vec3Arg v, float w) {
     // *************************************************************************
     // new methods exposed
 
+    /**
+     * Set the current quaternion to identity.
+     */
+    public void loadIdentity() {
+        this.x = 0f;
+        this.y = 0f;
+        this.z = 0f;
+        this.w = 1f;
+    }
+
     /**
      * Set all 4 components to specified values.
      *

diff --git a/src/main/java/com/github/stephengold/joltjni/RVec3.java b/src/main/java/com/github/stephengold/joltjni/RVec3.java
@@ -125,6 +125,15 @@ public RVec3 addLocal(double addX, double addY, double addZ) {
         return this;
     }
 
+    /**
+     * Set all components to 0.
+     */
+    public void loadZero() {
+        this.xx = 0.;
+        this.yy = 0.;
+        this.zz = 0.;
+    }
+
     /**
      * Test whether all 3 components are finite.
      *

diff --git a/src/main/java/com/github/stephengold/joltjni/Vec3.java b/src/main/java/com/github/stephengold/joltjni/Vec3.java
@@ -155,6 +155,24 @@ public void addInPlace(float xOffset, float yOffset, float zOffset) {
         this.z += zOffset;
     }
 
+    /**
+     * Set all components to 1.
+     */
+    public void loadOne() {
+        this.x = 1f;
+        this.y = 1f;
+        this.z = 1f;
+    }
+
+    /**
+     * Set all components to 0.
+     */
+    public void loadZero() {
+        this.x = 0f;
+        this.y = 0f;
+        this.z = 0f;
+    }
+
     /**
      * Change the current vector to a unit vector with the same direction.
      */