bd028579
 易尊强
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import PathProxy from '../core/PathProxy.js';
import { applyTransform as v2ApplyTransform } from '../core/vector.js';
var CMD = PathProxy.CMD;
var points = [[], [], []];
var mathSqrt = Math.sqrt;
var mathAtan2 = Math.atan2;
export default function transformPath(path, m) {
if (!m) {
return;
}
var data = path.data;
var len = path.len();
var cmd;
var nPoint;
var i;
var j;
var k;
var p;
var M = CMD.M;
var C = CMD.C;
var L = CMD.L;
var R = CMD.R;
var A = CMD.A;
var Q = CMD.Q;
for (i = 0, j = 0; i < len;) {
cmd = data[i++];
j = i;
nPoint = 0;
switch (cmd) {
case M:
nPoint = 1;
break;
case L:
nPoint = 1;
break;
case C:
nPoint = 3;
break;
case Q:
nPoint = 2;
break;
case A:
var x = m[4];
var y = m[5];
var sx = mathSqrt(m[0] * m[0] + m[1] * m[1]);
var sy = mathSqrt(m[2] * m[2] + m[3] * m[3]);
var angle = mathAtan2(-m[1] / sy, m[0] / sx);
data[i] *= sx;
data[i++] += x;
data[i] *= sy;
data[i++] += y;
data[i++] *= sx;
data[i++] *= sy;
data[i++] += angle;
data[i++] += angle;
i += 2;
j = i;
break;
case R:
p[0] = data[i++];
p[1] = data[i++];
v2ApplyTransform(p, p, m);
data[j++] = p[0];
data[j++] = p[1];
p[0] += data[i++];
p[1] += data[i++];
v2ApplyTransform(p, p, m);
data[j++] = p[0];
data[j++] = p[1];
}
for (k = 0; k < nPoint; k++) {
var p_1 = points[k];
p_1[0] = data[i++];
p_1[1] = data[i++];
v2ApplyTransform(p_1, p_1, m);
data[j++] = p_1[0];
data[j++] = p_1[1];
}
}
path.increaseVersion();
}
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