pointvec/sources/scripts/path_arc.js

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function Path_Arc(from,to,orientation,end)
{
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this.name = "arc";
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this.from = from;
this.to = to;
this.orientation = orientation;
this.end = end;
this.to_segment = function(prev)
{
var html = ""
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if(!prev || (!prev.to && !prev.end)){
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html += "M"+this.from.scale(dotgrid.scale)+" ";
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}
else if(prev){
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if(prev.end){
if(!prev.end.is_equal(this.from)){
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html += "M"+this.from.scale(dotgrid.scale)+" ";
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}
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}
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else if(prev.to){
if(!prev.to.is_equal(this.from)){
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html += "M"+this.from.scale(dotgrid.scale)+" ";
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}
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}
}
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html += "A"+this.to.sub(this.from).scale(dotgrid.scale)+" 0 "+orientation+" "+this.to.scale(dotgrid.scale)+" ";
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if(this.end){
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html += "A"+this.end.sub(this.to).scale(dotgrid.scale)+" 0 "+orientation+" "+this.end.scale(dotgrid.scale)+" ";
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}
return html
}
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this.handles = function()
{
var a = [];
if(this.from){ a.push(this.from); }
if(this.to){ a.push(this.to); }
if(this.end){ a.push(this.end); }
return a;
}
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}