forked from zhurui/management
100 lines
1.9 KiB
JavaScript
100 lines
1.9 KiB
JavaScript
var PathProxy = require("../core/PathProxy");
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var _vector = require("../core/vector");
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var v2ApplyTransform = _vector.applyTransform;
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var CMD = PathProxy.CMD;
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var points = [[], [], []];
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var mathSqrt = Math.sqrt;
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var mathAtan2 = Math.atan2;
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function _default(path, m) {
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var data = path.data;
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var cmd;
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var nPoint;
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var i;
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var j;
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var k;
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var p;
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var M = CMD.M;
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var C = CMD.C;
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var L = CMD.L;
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var R = CMD.R;
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var A = CMD.A;
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var Q = CMD.Q;
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for (i = 0, j = 0; i < data.length;) {
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cmd = data[i++];
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j = i;
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nPoint = 0;
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switch (cmd) {
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case M:
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nPoint = 1;
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break;
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case L:
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nPoint = 1;
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break;
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case C:
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nPoint = 3;
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break;
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case Q:
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nPoint = 2;
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break;
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case A:
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var x = m[4];
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var y = m[5];
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var sx = mathSqrt(m[0] * m[0] + m[1] * m[1]);
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var sy = mathSqrt(m[2] * m[2] + m[3] * m[3]);
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var angle = mathAtan2(-m[1] / sy, m[0] / sx); // cx
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data[i] *= sx;
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data[i++] += x; // cy
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data[i] *= sy;
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data[i++] += y; // Scale rx and ry
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// FIXME Assume psi is 0 here
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data[i++] *= sx;
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data[i++] *= sy; // Start angle
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data[i++] += angle; // end angle
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data[i++] += angle; // FIXME psi
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i += 2;
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j = i;
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break;
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case R:
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// x0, y0
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p[0] = data[i++];
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p[1] = data[i++];
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v2ApplyTransform(p, p, m);
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data[j++] = p[0];
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data[j++] = p[1]; // x1, y1
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p[0] += data[i++];
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p[1] += data[i++];
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v2ApplyTransform(p, p, m);
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data[j++] = p[0];
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data[j++] = p[1];
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}
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for (k = 0; k < nPoint; k++) {
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var p = points[k];
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p[0] = data[i++];
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p[1] = data[i++];
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v2ApplyTransform(p, p, m); // Write back
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data[j++] = p[0];
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data[j++] = p[1];
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}
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}
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}
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module.exports = _default; |