51 lines
1.1 KiB
JavaScript
51 lines
1.1 KiB
JavaScript
class StartConnection {
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constructor(state, start) {
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this.state = state;
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this.deltaX = 0;
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this.deltaY = 0;
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this.text = '';
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if(start) {
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this.setAnchorPoint(start.x, start.y);
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}
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}
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setAnchorPoint(x, y) {
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this.deltaX = x - this.state.x;
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this.deltaY = y - this.state.y;
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if(Math.abs(this.deltaX) < settings.snapToPadding) {
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this.deltaX = 0;
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}
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if(Math.abs(this.deltaY) < settings.snapToPadding) {
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this.deltaY = 0;
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}
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}
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getEndPoints() {
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const startX = this.state.x + this.deltaX;
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const startY = this.state.y + this.deltaY;
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const end = this.state.closestPointOnCircle(startX, startY);
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return {
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start: {x: startX, y: startY},
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end,
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};
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}
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draw() {
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const endPoints = this.getEndPoints();
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ctx.beginPath();
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ctx.moveTo(endPoints.start.x, endPoints.start.y);
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ctx.lineTo(endPoints.end.x, endPoints.end.y);
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ctx.stroke();
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}
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}
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