1. Camera movable with mouse and keyboard 2. GUI runs in separate thread 3. Improvement to GUI widgets 4. Fixes to BVH

rhai/bvh_test.rhai

@@ -0,0 +1,81 @@
+// BVH Stress Test Scene - Grid of spheres
+let scene = Scene();
+
+// Camera
+let camera = Camera(P(0.0, 2.0, 5.0), P(0.0, 0.0, 0.0), V(0.0, 1.0, 0.0));
+scene.addCamera("main", camera);
+
+// Lights
+let light = Light(P(3.0, 5.0, 3.0), V(0.8, 0.8, 0.8), V(0.05, 0.05, 0.05));
+light.active(true);
+scene.addLight("key", light);
+
+let light2 = Light(P(-3.0, 4.0, -2.0), V(0.4, 0.4, 0.6), V(0.05, 0.05, 0.05));
+light2.active(true);
+scene.addLight("fill", light2);
+
+let ambient = Ambient(V(0.1, 0.1, 0.1));
+ambient.active(true);
+scene.addLight("ambient", ambient);
+
+// Materials
+let kd = V(0.8, 0.2, 0.2);
+let ks = V(0.3, 0.3, 0.3);
+let kr = V(0.0, 0.0, 0.0);
+let red = Material(kd, ks, kr, 10.0);
+scene.addMaterial("red", red);
+
+let kd = V(0.2, 0.2, 0.8);
+let ks = V(0.3, 0.3, 0.3);
+let kr = V(0.0, 0.0, 0.0);
+let blue = Material(kd, ks, kr, 10.0);
+scene.addMaterial("blue", blue);
+
+let kd = V(0.2, 0.8, 0.2);
+let ks = V(0.3, 0.3, 0.3);
+let kr = V(0.0, 0.0, 0.0);
+let green = Material(kd, ks, kr, 10.0);
+scene.addMaterial("green", green);
+
+let kd = V(0.8, 0.8, 0.2);
+let ks = V(0.3, 0.3, 0.3);
+let kr = V(0.0, 0.0, 0.0);
+let yellow = Material(kd, ks, kr, 10.0);
+scene.addMaterial("yellow", yellow);
+
+let kd = V(0.8, 0.4, 0.8);
+let ks = V(0.3, 0.3, 0.3);
+let kr = V(0.1, 0.1, 0.1);
+let purple = Material(kd, ks, kr, 15.0);
+scene.addMaterial("purple", purple);
+
+// Floor
+let floor = RectangleUnit();
+let floor_node = Node(floor, green);
+floor_node.rotate(-90.0, 0.0, 0.0);
+floor_node.translate(0.0, -1.5, 0.0);
+floor_node.scale(5.0, 5.0, 1.0);
+scene.addNode("floor", floor_node);
+
+// Grid of spheres: 5 x 4 x 5 = 100 spheres
+let materials = [red, blue, green, yellow, purple];
+let count = 0;
+
+for x in range(-2, 3) {
+    for y in range(0, 4) {
+        for z in range(-2, 3) {
+            let mat_idx = count % 5;
+            let mat = materials[mat_idx];
+            let sphere = Sphere(P(0.0, 0.0, 0.0), 0.15);
+            let node = Node(sphere, mat);
+            let px = x.to_float() * 0.7;
+            let py = y.to_float() * 0.7 - 1.0;
+            let pz = z.to_float() * 0.7 - 1.0;
+            node.translate(px, py, pz);
+            scene.addNode("s" + count, node);
+            count += 1;
+        }
+    }
+}
+
+scene