Add Polygons example: show examples of all poly in h3d.prim (#800)

samples/Polygons.hx

@@ -0,0 +1,134 @@
+import h3d.prim.Cube;
+import h3d.prim.Cylinder;
+import h3d.prim.Disc;
+import h3d.prim.GeoSphere;
+import h3d.prim.Grid;
+import h3d.prim.Sphere;
+import h3d.scene.CameraController;
+import h3d.scene.Mesh;
+import h3d.Vector;
+import hxd.Key;
+
+/**
+ * Third person camera controller (top view) with arrow keys mapping
+ */
+class ThirdPersonCameraController extends CameraController {
+	override function onEvent( e : hxd.Event ) {
+		super.onEvent(e);
+
+		// Third person camera arrow keys mapping
+		if (e.keyCode == Key.UP) {
+			var radian = Math.atan2((curPos.y - target.y), (curPos.x - target.x));
+			pan(Math.sin(radian), Math.cos(radian));
+		}
+		if (e.keyCode == Key.LEFT) {
+			var radian = Math.atan2((curPos.y - target.y), (curPos.x - target.x));
+			radian = radian - Math.PI / 2.0;
+			pan(Math.sin(radian), Math.cos(radian));
+		}
+		if (e.keyCode == Key.DOWN) {
+			var radian = Math.atan2((curPos.y - target.y), (curPos.x - target.x));
+			radian = radian + Math.PI;
+			pan(Math.sin(radian), Math.cos(radian));
+		}
+		if (e.keyCode == Key.RIGHT) {
+			var radian = Math.atan2((curPos.y - target.y), (curPos.x - target.x));
+			radian = radian + Math.PI / 2.0;
+			pan(Math.sin(radian), Math.cos(radian));
+		}
+	}
+}
+
+class Polygons extends hxd.App {
+
+	var world : h3d.scene.World;
+	var shadow : h3d.pass.DefaultShadowMap;
+	var cameraCtrl : h3d.scene.CameraController;
+
+	override function init() {
+		world = new h3d.scene.World(64, 128, s3d);
+
+		// Grid
+		var grid = new Grid(64, 64);
+		grid.addNormals();
+		grid.addUVs();
+		var gridMesh = new Mesh(grid, s3d);
+		gridMesh.material.color.setColor(0x999999);
+		world.addChild(gridMesh);
+
+		// Cube
+		var cube = Cube.defaultUnitCube();
+		var cubeMesh = new Mesh(cube, s3d);
+		cubeMesh.setPosition(16, 32, 0.5);
+		cubeMesh.material.color.setColor(0xFFAA15);
+		world.addChild(cubeMesh);
+
+		// Cylinder
+		var cylinder = new Cylinder(16, 0.5);
+		cylinder.addNormals();
+		cylinder.addUVs();
+		var cylinderMesh = new Mesh(cylinder, s3d);
+		cylinderMesh.setPosition(24, 32, 0);
+		cylinderMesh.material.color.setColor(0x6FFFB0);
+		world.addChild(cylinderMesh);
+
+		// Disc on top of cylinder
+		var discTopCylinder = new Disc(0.5, 16);
+		discTopCylinder.addNormals();
+		discTopCylinder.addUVs();
+		var discTopCylinderMesh = new Mesh(discTopCylinder, s3d);
+		discTopCylinderMesh.setPosition(24, 32, 1);
+		discTopCylinderMesh.material.color.setColor(0x6FFFB0);
+		world.addChild(discTopCylinderMesh);
+
+		// Disc
+		var disc = new Disc(0.5, 16);
+		disc.addNormals();
+		disc.addUVs();
+		var discMesh = new Mesh(disc, s3d);
+		discMesh.setPosition(32, 32, 0.1);
+		discMesh.material.color.setColor(0x3D138D);
+		world.addChild(discMesh);
+
+		// Geosphere
+		var geosphere = new GeoSphere();
+		geosphere.addNormals();
+		geosphere.addUVs();
+		var geosphereMesh = new Mesh(geosphere, s3d);
+		geosphereMesh.setPosition(40, 32, 0.6);
+		geosphereMesh.material.color.setColor(0x00739D);
+		world.addChild(geosphereMesh);
+
+		// Sphere
+		var sphere = new Sphere(0.5, 16, 16);
+		sphere.addNormals();
+		sphere.addUVs();
+		var sphereMesh = new Mesh(sphere, s3d);
+		sphereMesh.setPosition(48, 32, 0.5);
+		sphereMesh.material.color.setColor(0xFF4040);
+		world.addChild(sphereMesh);
+
+		world.done();
+
+		// Lights
+		var light = new h3d.scene.fwd.DirLight(new h3d.Vector( 0.3, -0.4, -0.9), s3d);
+		s3d.lightSystem.ambientLight.setColor(0x909090);
+
+		shadow = s3d.renderer.getPass(h3d.pass.DefaultShadowMap);
+		shadow.size = 2048;
+		shadow.power = 200;
+		shadow.blur.radius= 0;
+		shadow.bias *= 0.1;
+		shadow.color.set(0.7, 0.7, 0.7);
+
+		s3d.camera.target.set(32, 32, 0);
+		s3d.camera.pos.set(80, 80, 48);
+		cameraCtrl = new ThirdPersonCameraController(s3d);
+		cameraCtrl.loadFromCamera();
+	}
+
+	static function main() {
+		new Polygons();
+	}
+
+}