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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| //REQUIRES VC | ||
|
|
||
| VC.Point = class { | ||
| #element = null; | ||
| x = 0; | ||
| y = 0; | ||
| constructor (x,y){ | ||
| this.x = x; | ||
| this.y = y; | ||
| } | ||
| render(screen){ | ||
| if (this.#element){ | ||
| this.remove(); | ||
| } | ||
| this.#element = screen.drawRect(this.x-1,this.y-1, 3, 3, "#fff","#000",0); | ||
| screen.onClear(this.remove) | ||
| } | ||
| remove(){ | ||
| if(this.#element){ | ||
| this.#element.remove(); | ||
| this.#element = null; | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| //REQUIRES VC | ||
| VC.Triangle = class { | ||
|
|
||
| #p1 = new VC.Point(0,0); | ||
| #p2 = new VC.Point(0,0); | ||
| #p3 = new VC.Point(0,0); | ||
| #elements = [] | ||
| constructor(p1, p2, p3){ | ||
| this.p1 = p1; | ||
| this.p2 = p2; | ||
| this.p3 = p3; | ||
| } | ||
|
|
||
| get p1() { | ||
| return this.#p1; | ||
| } | ||
| set p1(value){ | ||
| if(!(value instanceof VC.Point)){ | ||
| throw ("VC.Point expected!") | ||
| } | ||
| this.#p1 = value; | ||
| } | ||
|
|
||
| get p2() { | ||
| return this.#p2; | ||
| } | ||
| set p2(value){ | ||
| if(!(value instanceof VC.Point)){ | ||
| throw ("VC.Point expected!") | ||
| } | ||
| this.#p2 = value; | ||
| } | ||
|
|
||
| get p3() { | ||
| return this.#p3; | ||
| } | ||
| set p3(value){ | ||
| if(!(value instanceof VC.Point)){ | ||
| throw ("VC.Point expected!") | ||
| } | ||
| this.#p3 = value; | ||
| } | ||
|
|
||
| render(screen){ | ||
| if(this.#elements.length>0){ | ||
| this.remove(); | ||
| } | ||
| this.p1.render(screen); | ||
| this.p2.render(screen); | ||
| this.p3.render(screen); | ||
| this.#elements.push(screen.drawLine(this.p1.x, this.p1.y, this.p2.x, this.p2.y, "#00F", 1)); | ||
| this.#elements.push(screen.drawLine(this.p2.x, this.p2.y, this.p3.x, this.p3.y ,"#00F", 1)); | ||
| this.#elements.push(screen.drawLine(this.p3.x, this.p3.y, this.p1.x, this.p1.y, "#00F", 1)); | ||
| screen.onClear(this.remove) | ||
| } | ||
|
|
||
| remove(){ | ||
| if(this.#elements.length>0){ | ||
| this.p1.remove(); | ||
| this.p2.remove(); | ||
| this.p3.remove(); | ||
| this.#elements.forEach((element)=>element.remove()); | ||
| this.#elements = []; | ||
| } | ||
| } | ||
|
|
||
| contains(obj){ | ||
| if(obj instanceof VC.Point) { | ||
| var d1 = this.#sign(obj, this.p1, this.p2); | ||
| var d2 = this.#sign(obj, this.p2, this.p3); | ||
| var d3 = this.#sign(obj, this.p3, this.p1); | ||
|
|
||
| var has_neg = (d1 < 0) || (d2 < 0) || (d3 < 0); | ||
| var has_pos = (d1 > 0) || (d2 > 0) || (d3 > 0); | ||
|
|
||
| return !(has_neg && has_pos); | ||
| } | ||
| if (obj instanceof VC.Box){ | ||
| return this.contains(new VC.Point(obj.x, obj.y)) && this.contains(new VC.Point(obj.x + obj.width, obj.y)) && this.contains(new VC.Point(obj.x + obj.width, obj.y + obj.height)) && this.contains(new VC.Point(obj.x, obj.y + obj.height)) | ||
| } | ||
|
|
||
| if (obj instanceof VC.Triangle){ | ||
| return this.contains(obj.p1) && this.contains(obj.p2) && this.contains(obj.p3) | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| #sign (p1,p2,p3) | ||
| { | ||
| return (p1.x - p3.x) * (p2.y - p3.y) - (p2.x - p3.x) * (p1.y - p3.y); | ||
| } | ||
| } |
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