mirror of
https://github.com/wahyd4/three.js.git
synced 2026-08-16 00:15:56 +10:00
178 lines
2.7 KiB
JavaScript
178 lines
2.7 KiB
JavaScript
/**
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* @author mr.doob / http://mrdoob.com/
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*/
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THREE.Rectangle = function () {
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var _left, _top, _right, _bottom,
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_width, _height, _isEmpty = true;
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function resize() {
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_width = _right - _left;
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_height = _bottom - _top;
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}
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this.getX = function () {
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return _left;
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};
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this.getY = function () {
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return _top;
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};
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this.getWidth = function () {
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return _width;
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};
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this.getHeight = function () {
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return _height;
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};
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this.getLeft = function() {
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return _left;
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};
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this.getTop = function() {
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return _top;
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};
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this.getRight = function() {
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return _right;
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};
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this.getBottom = function() {
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return _bottom;
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};
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this.set = function ( left, top, right, bottom ) {
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_isEmpty = false;
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_left = left; _top = top;
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_right = right; _bottom = bottom;
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resize();
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};
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this.addPoint = function ( x, y ) {
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if ( _isEmpty ) {
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_isEmpty = false;
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_left = x; _top = y;
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_right = x; _bottom = y;
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} else {
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_left = Math.min( _left, x );
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_top = Math.min( _top, y );
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_right = Math.max( _right, x );
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_bottom = Math.max( _bottom, y );
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}
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resize();
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};
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this.addRectangle = function ( r ) {
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if ( _isEmpty ) {
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_isEmpty = false;
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_left = r.getLeft(); _top = r.getTop();
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_right = r.getRight(); _bottom = r.getBottom();
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} else {
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_left = Math.min(_left, r.getLeft());
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_top = Math.min(_top, r.getTop());
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_right = Math.max(_right, r.getRight());
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_bottom = Math.max(_bottom, r.getBottom());
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}
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resize();
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};
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this.inflate = function ( v ) {
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_left -= v; _top -= v;
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_right += v; _bottom += v;
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resize();
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};
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this.minSelf = function ( r ) {
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_left = Math.max( _left, r.getLeft() );
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_top = Math.max( _top, r.getTop() );
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_right = Math.min( _right, r.getRight() );
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_bottom = Math.min( _bottom, r.getBottom() );
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resize();
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};
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/*
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this.contains = function ( x, y ) {
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return x > _left && x < _right && y > _top && y < _bottom;
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};
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*/
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this.instersects = function ( r ) {
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// return this.contains( r.getLeft(), r.getTop() ) || this.contains( r.getRight(), r.getTop() ) || this.contains( r.getLeft(), r.getBottom() ) || this.contains( r.getRight(), r.getBottom() );
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return Math.min( _right, r.getRight() ) - Math.max( _left, r.getLeft() ) >= 0 && Math.min( _bottom, r.getBottom() ) - Math.max( _top, r.getTop() ) >= 0;
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};
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this.empty = function () {
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_isEmpty = true;
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_left = 0; _top = 0;
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_right = 0; _bottom = 0;
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resize();
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};
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this.isEmpty = function () {
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return _isEmpty;
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};
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this.toString = function () {
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return "THREE.Rectangle ( left: " + _left + ", right: " + _right + ", top: " + _top + ", bottom: " + _bottom + ", width: " + _width + ", height: " + _height + " )";
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};
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};
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