GZ/nwyj/.svn/pristine/8a/8ae19a0a51c0ed75912c4a1e923a01bb7a819165.svn-base

if (!dojo._hasResource["dojox.charting.Chart3D"]) { // _hasResource checks added
													// by build. Do not use
													// _hasResource directly in
													// your code.
	dojo._hasResource["dojox.charting.Chart3D"] = true;
	dojo.provide("dojox.charting.Chart3D");

	dojo.require("dojox.gfx3d");

	(function() {
		var observerVector = {
			x : 0,
			y : 0,
			z : 1
		}, v = dojox.gfx3d.vector, n = dojox.gfx.normalizedLength;

		dojo.declare("dojox.charting.Chart3D", null, {
			constructor : function(node, lights, camera, theme) {
				// setup a view
				this.node = dojo.byId(node);
				this.surface = dojox.gfx.createSurface(this.node,
						n(this.node.style.width), n(this.node.style.height));
				this.view = this.surface.createViewport();
				this.view.setLights(lights.lights, lights.ambient,
						lights.specular);
				this.view.setCameraTransform(camera);
				this.theme = theme;

				// initialize internal variables
				this.walls = [];
				this.plots = [];
			},

			// public API
			generate : function() {
				return this._generateWalls()._generatePlots();
			},
			invalidate : function() {
				this.view.invalidate();
				return this;
			},
			render : function() {
				this.view.render();
				return this;
			},
			addPlot : function(plot) {
				return this._add(this.plots, plot);
			},
			removePlot : function(plot) {
				return this._remove(this.plots, plot);
			},
			addWall : function(wall) {
				return this._add(this.walls, wall);
			},
			removeWall : function(wall) {
				return this._remove(this.walls, wall);
			},

			// internal API
			_add : function(array, item) {
				if (!dojo.some(array, function(i) {
							return i == item;
						})) {
					array.push(item);
					this.view.invalidate();
				}
				return this;
			},
			_remove : function(array, item) {
				var a = dojo.filter(array, function(i) {
							return i != item;
						});
				return a.length < array.length
						? (array = a, this.invalidate())
						: this;
			},
			_generateWalls : function() {
				for (var i = 0; i < this.walls.length; ++i) {
					if (v.dotProduct(observerVector, this.walls[i].normal) > 0) {
						this.walls[i].generate(this);
					}
				}
				return this;
			},
			_generatePlots : function() {
				var depth = 0, m = dojox.gfx3d.matrix, i = 0;
				for (; i < this.plots.length; ++i) {
					depth += this.plots[i].getDepth();
				}
				for (--i; i >= 0; --i) {
					var scene = this.view.createScene();
					scene.setTransform(m.translate(0, 0, -depth));
					this.plots[i].generate(this, scene);
					depth -= this.plots[i].getDepth();
				}
				return this;
			}
		});
	})();

}