/*
files:
../point_src/core/head.js
../point_src/pointpen.js
../point_src/pointdraw.js
../point_src/setunset.js
../point_src/stroke.js
../point_src/point-content.js
../point_src/pointlistpen.js
../point_src/pointlist.js
../point_src/point.js
../point_src/events.js
../point_src/automouse.js
../point_src/distances.js
../point_src/bisector.js
../point_src/dragging.js
../point_src/functions/clamp.js
../point_src/stage.js
---
*/
const arcLoop = function(ctx, points) {
/*
From start point, project of radius towards the next.
Then arcTo until exausted.
*/
//
let startPoint = points.first()
let nextPoint = points[1]
let midPoint = startPoint.lerp(nextPoint, .5)
// let midPoint = startPoint.lerpPixel(nextPoint, startPoint.radius)
/* For convenience we render it. */
midPoint.pen.indicator(ctx, {color: 'grey'});
ctx.strokeStyle = 'red'
ctx.beginPath();
// ctx.moveTo(startPoint.x, startPoint.y);
let previousPoint = midPoint
let pl = points.length;
for (var i = 1; i < pl; i++) {
let p = points[i]
let toPoint = p;
let r = previousPoint.radius
ctx.arcTo(previousPoint.x, previousPoint.y, toPoint.x, toPoint.y, r);
previousPoint = p
}
let last = points[pl-1]
ctx.arcTo(previousPoint.x, previousPoint.y, startPoint.x, startPoint.y, previousPoint.radius);
ctx.arcTo(startPoint.x, startPoint.y, midPoint.x, midPoint.y, startPoint.radius);
// ctx.arcTo(midPoint.x, midPoint.y, nextPoint.x, nextPoint.y, startPoint.radius);
ctx.lineTo(midPoint.x, midPoint.y, nextPoint.x, nextPoint.y, startPoint.radius);
}
class MainStage extends Stage {
canvas='playspace'
// live=false
live = true
mounted(){
// this.point = new Point(50, 50)
const r = 200
const shareSize = 15
// 45
this.points = new PointList(
// this.center.add(-r, 0)
new Point({ x: 100, y: 300 })
, new Point({ x: 300, y: 300 })
, new Point({ x: 400, y: 500, radius: 20 })
, new Point({ x: 450, y: 300, radius: 8 })
, new Point({ x: 500, y: 500, radius: 10 })
, new Point({ x: 550, y: 550, radius: 10 })
)
this.points[1].radius = 30
this.points[0].radius = this.points[1].radius = shareSize
// this.points[0].color = "hsl(299deg 62% 44%)"
// this.points[1].color = "hsl(244deg 71% 56%)"
this.near = this.center.copy()
this.dis = new Dragging
this.dis.initDragging(this)
// this.dis.onDragMove = this.onDragMove.bind(this)
// this.dis.onDragEnd = this.onDragEnd.bind(this)
this.dis.addPoints(...this.points)
}
generateGrad() {
this.grad = this.points.gradient.linear(this.ctx)
}
draw(ctx){
this.clear(ctx)
// ctx.strokeStyle = this.grad
ctx.lineWidth = 4
arcLoop(ctx, this.points)
bisectAll(this.points)
ctx.stroke();
this.drawCircles(ctx)
this.drawIris(ctx)
}
drawCircles(ctx) {
this.points.pen.indicators(ctx)//, {color:'black'})
}
drawIris(ctx) {
/* The dynamic highlighter. */
let p = this.dis.getPoint();
if(p) {
p.pen.circle(ctx)
}
}
onDragMove(ev) {
// this.dis.applyXY(ev.x, ev.y)
}
}
; stage = MainStage.go();