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| export function buildPath(ctx, shape) {
| var x = shape.x;
| var y = shape.y;
| var width = shape.width;
| var height = shape.height;
| var r = shape.r;
| var r1;
| var r2;
| var r3;
| var r4;
| if (width < 0) {
| x = x + width;
| width = -width;
| }
| if (height < 0) {
| y = y + height;
| height = -height;
| }
| if (typeof r === 'number') {
| r1 = r2 = r3 = r4 = r;
| }
| else if (r instanceof Array) {
| if (r.length === 1) {
| r1 = r2 = r3 = r4 = r[0];
| }
| else if (r.length === 2) {
| r1 = r3 = r[0];
| r2 = r4 = r[1];
| }
| else if (r.length === 3) {
| r1 = r[0];
| r2 = r4 = r[1];
| r3 = r[2];
| }
| else {
| r1 = r[0];
| r2 = r[1];
| r3 = r[2];
| r4 = r[3];
| }
| }
| else {
| r1 = r2 = r3 = r4 = 0;
| }
| var total;
| if (r1 + r2 > width) {
| total = r1 + r2;
| r1 *= width / total;
| r2 *= width / total;
| }
| if (r3 + r4 > width) {
| total = r3 + r4;
| r3 *= width / total;
| r4 *= width / total;
| }
| if (r2 + r3 > height) {
| total = r2 + r3;
| r2 *= height / total;
| r3 *= height / total;
| }
| if (r1 + r4 > height) {
| total = r1 + r4;
| r1 *= height / total;
| r4 *= height / total;
| }
| ctx.moveTo(x + r1, y);
| ctx.lineTo(x + width - r2, y);
| r2 !== 0 && ctx.arc(x + width - r2, y + r2, r2, -Math.PI / 2, 0);
| ctx.lineTo(x + width, y + height - r3);
| r3 !== 0 && ctx.arc(x + width - r3, y + height - r3, r3, 0, Math.PI / 2);
| ctx.lineTo(x + r4, y + height);
| r4 !== 0 && ctx.arc(x + r4, y + height - r4, r4, Math.PI / 2, Math.PI);
| ctx.lineTo(x, y + r1);
| r1 !== 0 && ctx.arc(x + r1, y + r1, r1, Math.PI, Math.PI * 1.5);
| }
|
|
