/* <copyright> This file contains proprietary software owned by Motorola Mobility, Inc.<br/> No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/> (c) Copyright 2011 Motorola Mobility, Inc. All Rights Reserved. </copyright> */ /////////////////////////////////////////////////////////////////////// // Class Rectangle // 2D rectangle /////////////////////////////////////////////////////////////////////// var Rectangle = exports.Rectangle = Object.create(Object.prototype, { /////////////////////////////////////////////////////////////////////// // Instance variables /////////////////////////////////////////////////////////////////////// m_top: { value: null, writable: true }, m_left: { value: null, writable: true }, m_width: { value: null, writable: true }, m_height: { value: null, writable: true }, /////////////////////////////////////////////////////////////////////// // Property accessors /////////////////////////////////////////////////////////////////////// set: { value: function(l,t,w,h) { this.m_left = l; this.m_top = t; this.m_width = w; this.m_height = h; } }, getLeft: { value: function() { return this.m_left; } }, setLeft: { value: function(l) { this.m_left = l; } }, getRight: { value: function() { return this.m_left + this.m_width; } }, setRight: { value: function(r) { this.m_width = r - this.m_left; } }, getBottom: { value: function() { return this.m_top + this.m_height; } }, setBottom: { value: function(b) { this.m_height = b - this.m_top; } }, getTop: { value: function() { return this.m_top; } }, setTop: { value: function(t) { this.m_top = t; } }, getCenter: { value: function() { return [this.m_left + 0.5*this.m_width, this.m_top + 0.5*this.m_height]; } }, getWidth: { value: function() { return this.m_width; } }, setWidth: { value: function(w) { this.m_width = w; } }, getHeight: { value: function() { return this.m_height; } }, setHeight: { value: function(h) { this.m_height = h; } }, geomType: { value: function() { return this.GEOM_TYPE_RECTANGLE; } }, /////////////////////////////////////////////////////////////////////// // Methods /////////////////////////////////////////////////////////////////////// contains: { value: function( x, y ) { if (x < this.getLeft()) return false; if (x > this.getRight()) return false; if (y < this.getTop()) return false; if (y > this.getBottom()) return false; return true; } }, dup: { value: function() { var rtnRec = Object.create(Rectangle, {}); rtnRec.m_top = this.m_top; rtnRec.m_left = this.m_left; rtnRec.m_width = this.m_width; rtnRec.m_height = this.m_height; return rtnRec; } }, onBoundary: { value: function( x, y ) { if ((MathUtils.fpCmp(y,this.getTop()) >= 0) && (MathUtils.fpCmp(y,this.getBottom()) <= 0)) { if ((MathUtils.fpCmp(x, this.getLeft()) == 0) || (MathUtils.fpCmp(x, this.getRight()) == 0)) return true; if ((MathUtils.fpCmp(x,this.getLeft()) >= 0) && (MathUtils.fpCmp(x,this.getRight()) <= 0)) { if ((MathUtils.fpCmp(y, this.getTop()) == 0) || (MathUtils.fpCmp(y, this.getBottom()) == 0)) return true; } } return false; } }, setToPoint: { value: function( pt ) { this.m_left = pt[0]; this.m_top = pt[1]; this.m_width = 0; this.m_height = 0; } }, setToBounds: { value: function( bounds ) { var pt = bounds[0]; this.setToPoint( pt ); for (var i=1; i<4; i++) this.unionPoint( bounds[i] ); } }, getPoint: { value: function(i) { if (i < 0) throw( "invalid point index in Rectangle.getPoint: " + i ); i = i % 4; var pt = [0,0]; switch (i) { case 0: pt[0] = this.getLeft(); pt[1] = this.getTop(); break; case 1: pt[0] = this.getLeft(); pt[1] = this.getBottom(); break; case 2: pt[0] = this.getRight(); pt[1] = this.getBottom(); break; case 3: pt[0] = this.getRight(); pt[1] = this.getTop(); break; } return pt; } }, getQuadrant: { value: function( iQuad ) { // quadrant ordering starts at upper left and continues around counter-clockwise var rtnQuad = this.dup(); var hw = 0.5*this.m_width, hh = 0.5*this.m_height; rtnQuad.m_width = hw; rtnQuad.m_height = hh; switch (iQuad) { case 0: // no-op break; case 1: rtnQuad.m_top += hh; break; case 2: rtnQuad.m_left += hw; rtnQuad.m_top += hh; break; case 3: rtnQuad.m_left += hw; break; default: throw new Error( "invalid quadrant to Rectangle.getQuadrant: " + iQuad ); break; } return rtnQuad; } }, unionPoint: { value: function( pt ) { var x = pt[0]; var xMin = this.getLeft(), xMax = this.getRight(); if (x < xMin) xMin =x; else if (x > xMax) xMax = x; var y = pt[1]; var yMin = this.getTop(), yMax = this.getBottom(); if (y < yMin) yMin = y; else if (y > yMax) yMax = y; this.setLeft( xMin ); this.setWidth( xMax - xMin ); this.setTop( yMin ); this.setHeight( yMax - yMin ); } }, translate: { value: function( dx, dy ) { this.m_left += dx; this.m_top += dy; } } });