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Copy path_Engine.Shape.Puller.js
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179 lines (148 loc) · 3.32 KB
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(function(
Engine,
Point,
Polygon,
Vector
){
Engine.Shape.Puller = function(width, height, json){
var i, ref, point, poly;
this.pos = new Vector(0, 0);
this.size = new Vector(width, height);
this.heightRatio = json.data.width / json.data.height;
this.widthRatio = json.data.ar;
this.resize(width, height, true);
ref = {};
this.points = [];
this.polygons = [];
for (i = 0; i < json.points.length; i++) {
point = new Point(
json.points[i].id,
json.points[i].x,
json.points[i].y,
this.size
);
ref[point.id] = point;
this.points.push(point);
}
for (i = 0; i < json.polygons.length; i++) {
poly = json.polygons[i];
this.polygons.push(new Polygon(
ref[poly.points[0]],
ref[poly.points[1]],
ref[poly.points[2]],
poly.color
));
this.polygons[this.polygons.length - 1].noFill = true;
}
this.ref = undefined;
};
Engine.Shape.Puller.prototype = {
alpha: 0,
sizeOffset: 100,
resize: function(width, height, sizeOnly){
var len, p, newWidth, newHeight;
newHeight = height + this.sizeOffset;
newWidth = this.size.y * this.heightRatio;
if (newWidth < width) {
newWidth = width + this.sizeOffset;
newHeight = newWidth * this.widthRatio;
}
this.size.y = newHeight;
this.size.x = newWidth;
this.pos.x = -(newWidth / 2);
this.pos.y = -(newHeight / 2);
if (sizeOnly) {
return this;
}
for (p = 0, len = this.points.length; p < len; p++) {
this.points[p].resize();
}
},
update: function(engine){
var p;
for (p = 0; p < this.points.length; p++) {
this.points[p].update(engine);
}
if (this.alpha < 1) {
this.alpha = Math.min(this.alpha + 2 * engine.tick, 1);
}
return this;
},
draw: function(ctx, scale, engine){
var p, poly;
ctx.translate(
this.pos.x * scale >> 0,
this.pos.y * scale >> 0
);
if (this.alpha < 1) {
ctx.globalAlpha = this.alpha;
}
ctx.beginPath();
for (p = 0; p < this.polygons.length; p++) {
poly = this.polygons[p];
ctx.moveTo(
poly.a.pos.x * scale >> 0,
poly.a.pos.y * scale >> 0
);
ctx.lineTo(
poly.b.pos.x * scale >> 0,
poly.b.pos.y * scale >> 0
);
ctx.lineTo(
poly.c.pos.x * scale >> 0,
poly.c.pos.y * scale >> 0
);
ctx.lineTo(
poly.a.pos.x * scale >> 0,
poly.a.pos.y * scale >> 0
);
}
ctx.closePath();
ctx.lineWidth = 0.4 * scale;
ctx.strokeStyle = 'rgba(108,0,243,0.15)';
ctx.stroke();
if (this.alpha < 1) {
ctx.globalAlpha = 1;
}
for (p = 0; p < this.points.length; p++) {
this.points[p].draw(ctx, scale);
}
ctx.beginPath();
for (p = 0; p < this.polygons.length; p++) {
if (this.polygons[p].checkChasing()) {
poly = this.polygons[p];
ctx.moveTo(
poly.a.pos.x * scale >> 0,
poly.a.pos.y * scale >> 0
);
ctx.lineTo(
poly.b.pos.x * scale >> 0,
poly.b.pos.y * scale >> 0
);
ctx.lineTo(
poly.c.pos.x * scale >> 0,
poly.c.pos.y * scale >> 0
);
ctx.lineTo(
poly.a.pos.x * scale >> 0,
poly.a.pos.y * scale >> 0
);
}
}
ctx.closePath();
ctx.fillStyle = 'rgba(108,0,243,0.05)';
ctx.fill();
ctx.setTransform(1, 0, 0, 1, 0, 0);
ctx.translate(
engine.width / 2 * engine.scale >> 0,
engine.height / 2 * engine.scale >> 0
);
return this;
}
};
})(
window.Engine,
window.Engine.Point.Puller,
window.Engine.Polygon.Puller,
window.Vector
);