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fix arc getSelfRect bound

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This commit is contained in:
Samuel Laulhau 2021-12-17 21:46:54 +01:00
parent 077505ec51
commit 602e76a76d
1 changed files with 17 additions and 27 deletions
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44
src/shapes/Arc.ts
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@ -62,35 +62,25 @@ export class Arc extends Shape<ArcConfig> {
}
getSelfRect() {
const radius = this.outerRadius()
const DEG_TO_RAD = Math.PI / 180;
const angle = this.angle() * DEG_TO_RAD;
const inc = 1 * DEG_TO_RAD;
let start = 0
let end = angle + inc
if (this.clockwise()) {
start = end
end = 360
}
const xs = [];
const ys = [];
for (let i = 0; i < end; i += inc ) {
xs.push(Math.cos(i));
ys.push(Math.sin(i));
}
const minX = Math.round(radius * Math.min(...xs));
const maxX = Math.round(radius * Math.max(...xs));
const minY = Math.round(radius * Math.min(...ys));
const maxY = Math.round(radius * Math.max(...ys));
const innerRadius = this.innerRadius()
const outerRadius = this.outerRadius()
const clockwise = this.clockwise()
const angle = Konva.getAngle(clockwise ? 360 - this.angle() : this.angle());
const boundLeftRatio = Math.cos(Math.min(angle, Math.PI))
const boundRightRatio = 1
const boundTopRatio = Math.sin(Math.min(Math.max(Math.PI, angle), 3 * Math.PI / 2))
const boundBottomRatio = Math.sin(Math.min(angle, Math.PI / 2))
const boundLeft = boundLeftRatio * (boundLeftRatio > 0 ? innerRadius : outerRadius)
const boundRight = boundRightRatio * (boundRightRatio > 0 ? outerRadius : innerRadius)
const boundTop = boundTopRatio * (boundTopRatio > 0 ? innerRadius : outerRadius)
const boundBottom = boundBottomRatio * (boundBottomRatio > 0 ? outerRadius : innerRadius)
return {
x: minX || 0,
y: minY || 0,
width: maxX - minX,
height: maxY - minY
x: Math.round(boundLeft),
y: Math.round(clockwise ? -1 * boundBottom : boundTop),
width: Math.round(boundRight - boundLeft),
height: Math.round(boundBottom - boundTop)
}
}