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43 lines
978 B
JavaScript
43 lines
978 B
JavaScript
/*
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* This file is part of the Doodle3D project (http://doodle3d.com).
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*
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* Copyright (c) 2013, Doodle3D
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* This software is licensed under the terms of the GNU GPL v2 or later.
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* See file LICENSE.txt or visit http://www.gnu.org/licenses/gpl.html for full license details.
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*/
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function drawCircle(x0,y0,r,res) {
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if (res==undefined) res = 50; //circle resolution
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beginShape();
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var step=Math.PI * 2.0 / res;
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for (var a=0; a<=Math.PI*2; a+=step) {
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var x = Math.sin(a) * r + x0;
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var y = Math.cos(a) * r + y0;
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if (a==0) shapeMoveTo(x,y);
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else shapeLineTo(x,y);
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}
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endShape();
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}
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function beginShape(x,y) {
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setSketchModified(true);
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}
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function shapeMoveTo(x,y) {
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_points.push([x, y, true]);
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adjustBounds(x, y)
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adjustPreviewTransformation();
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draw(x, y, .5);
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}
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function shapeLineTo(x,y) {
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_points.push([x, y, false]);
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adjustBounds(x, y)
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adjustPreviewTransformation();
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draw(x, y);
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}
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function endShape() {
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renderToImageDataPreview();
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}
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