1 files changed, 63 insertions, 0 deletions
diff --git a/engine/src/core/com/jme3/effect/shapes/EmitterMeshConvexHullShape.java b/engine/src/core/com/jme3/effect/shapes/EmitterMeshConvexHullShape.java
new file mode 100644
index 0000000..1c5d687
--- /dev/null
+++ b/engine/src/core/com/jme3/effect/shapes/EmitterMeshConvexHullShape.java
@@ -0,0 +1,63 @@
+package com.jme3.effect.shapes;
+
+import com.jme3.math.FastMath;
+import com.jme3.math.Vector3f;
+import com.jme3.scene.Mesh;
+import java.util.List;
+
+/**
+ * This emiter shape emits the particles from the given shape's interior constrained by its convex hull
+ * (a geometry that tightly wraps the mesh). So in case of multiple meshes some vertices may appear
+ * in a space between them.
+ * @author Marcin Roguski (Kaelthas)
+ */
+public class EmitterMeshConvexHullShape extends EmitterMeshFaceShape {
+
+    /**
+     * Empty constructor. Sets nothing.
+     */
+    public EmitterMeshConvexHullShape() {
+    }
+
+    /**
+     * Constructor. It stores a copy of vertex list of all meshes.
+     * @param meshes
+     *        a list of meshes that will form the emitter's shape
+     */
+    public EmitterMeshConvexHullShape(List<Mesh> meshes) {
+        super(meshes);
+    }
+
+    /**
+     * This method fills the point with coordinates of randomly selected point inside a convex hull
+     * of randomly selected mesh.
+     * @param store
+     *        the variable to store with coordinates of randomly selected selected point inside a convex hull
+     *        of randomly selected mesh
+     */
+    @Override
+    public void getRandomPoint(Vector3f store) {
+        super.getRandomPoint(store);
+        // now move the point from the meshe's face towards the center of the mesh
+        // the center is in (0, 0, 0) in the local coordinates
+        store.multLocal(FastMath.nextRandomFloat());
+    }
+
+    /**
+     * This method fills the point with coordinates of randomly selected point inside a convex hull
+     * of randomly selected mesh.
+     * The normal param is not used.
+     * @param store
+     *        the variable to store with coordinates of randomly selected selected point inside a convex hull
+     *        of randomly selected mesh
+     * @param normal
+     *        not used in this class
+     */
+    @Override
+    public void getRandomPointAndNormal(Vector3f store, Vector3f normal) {
+        super.getRandomPointAndNormal(store, normal);
+        // now move the point from the meshe's face towards the center of the mesh
+        // the center is in (0, 0, 0) in the local coordinates
+        store.multLocal(FastMath.nextRandomFloat());
+    }
+}