sbrl/Scene-Starlight
sbrl/Scene-Starlight
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Begin drawing proper stars. It doesn't work yet (more bug spray needed :P).

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This commit is contained in:
Starbeamrainbowlabs 2017-01-01 15:28:48 +00:00
parent fa9dea3bd4
commit e804d9cd02
2 changed files with 38 additions and 2 deletions
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38
Star.js
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@ -9,9 +9,38 @@ class Star
this.canvas = inCanvas;
this.position = inPosition;
this.points = 5;
this.size = inSize;
this.innerRingSize = this.size * 0.6;
this.colour = "white";
this.recalculatePoints();
}
/**
* The step around a circle (in radians) between each point (both inner and
* outer) on the star.
* Used by recalculatePoints().
* @return {number} The step around a circle between each point on the star.
*/
get pointStep()
{
return (Math.PI * 2) / (this.points * 2);
}
recalculatePoints()
{
this.points = [];
for (let n = 0, i = 0; n < Math.PI * 2; n += this.pointStep, i++)
{
let currentSize = i % 2 == 0 ? this.size : this.innerRingSize;
this.points.push(new Vector(
currentSize * Math.cos(Math.PI * 2 * (n / this.points * 2) + this.rotation - Math.PI / 2),
currentSize * Math.sin(Math.PI * 2 * (n / this.points * 2) + this.rotation - Math.PI / 2)
));
}
}
update(dt)
@ -23,9 +52,16 @@ class Star
{
context.save();
context.translate(this.position.x, this.position.y);
// TODO: Debug this
context.beginPath();
context.moveTo(this.points[0].x, this.points[0].y);
for (let point of this.points) {
context.lineTo(point.x, point.y);
}
context.closePath();
context.fillStyle = this.colour;
context.fillRect(-5, -5, 10, 10);
context.fill();
context.restore();
}

2
package.json
View file

@ -9,7 +9,7 @@
"scripts": {
"env": "env",
"test": "echo (There aren't any tests yet!)",
"start": "wzrd $npm_package_main:$npm_package_config_browserify_bundle & sensible-browser http://localhost:9966/",
"start": "wzrd $npm_package_main:$npm_package_config_browserify_bundle & sleep 1; sensible-browser http://localhost:9966/",
"stop": "kill $(pgrep --full wzrd)",
"build": "browserify $npm_package_main -t rollupify -o $npm_package_config_browserify_bundle",
"build.dev": "browserify $npm_package_main -t rollupify -o $npm_package_config_browserify_bundle --debug",