/* * Copyright 2009, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** * The Orbit tool allows the user to look around the model by click-dragging. * The shift key enters a pan mode instead of orbiting. */ function OrbitTool(camera) { this.camera = camera; this.lastOffset = null; this.mouseLeftDown = false; this.mouseMiddleDown = false; } OrbitTool.prototype.handleMouseDown = function(e) { this.lastOffset = { x: e.x, y: e.y }; if (e.button == g_o3d.Event.BUTTON_LEFT) { this.mouseLeftDown = true; } else if (e.button == g_o3d.Event.BUTTON_MIDDLE) { this.mouseMiddleDown = true; } }; OrbitTool.prototype.handleMouseMove = function(e) { if (e.x !== undefined && (this.mouseLeftDown || this.mouseMiddleDown)) { var offset = { x: e.x, y: e.y }; dY = (offset.y - this.lastOffset.y); dX = (offset.x - this.lastOffset.x); this.lastOffset = offset; panInsteadOfOrbit = (this.mouseLeftDown && this.mouseMiddleDown) || e.shiftKey; if (panInsteadOfOrbit) { dX *= -1; this.camera.target.x -= (dY * Math.cos(this.camera.eye.rotZ) + dX * Math.sin(this.camera.eye.rotZ)) / (700 / this.camera.eye.distanceFromTarget); this.camera.target.y += (-dY * Math.sin(this.camera.eye.rotZ) + dX * Math.cos(this.camera.eye.rotZ)) / (700 / this.camera.eye.distanceFromTarget); } else { this.camera.eye.rotZ -= dX / 300; this.camera.eye.rotH -= dY / 300; this.camera.eye.rotH = peg(this.camera.eye.rotH, 0.1, Math.PI - 0.1); document.getElementById('output').innerHTML = this.camera.eye.rotH; } this.camera.update(); } }; OrbitTool.prototype.handleMouseUp = function(e) { if (e.button == g_o3d.Event.BUTTON_LEFT) { this.mouseLeftDown = false; } else if (e.button == g_o3d.Event.BUTTON_MIDDLE) { this.mouseMiddleDown = false; } }; OrbitTool.prototype.handleKeyDown = function(e) { return false; }; OrbitTool.prototype.handleKeyUp = function(e) { return false; };