110 lines
2.5 KiB
JavaScript
110 lines
2.5 KiB
JavaScript
function Cursor()
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{
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this.pos = {x:0,y:0};
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this.translation = null;
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this.operation = null;
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this.translate = function(from = null,to = null, multi = false)
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{
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if((from || to) && this.translation == null){ this.translation = {multi:multi}; console.log("Begin translation") }
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if(from){ this.translation.from = from; }
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if(to){ this.translation.to = to; }
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if(!from && !to){
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this.translation = null;
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}
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}
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this.down = function(e)
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{
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this.pos = this.pos_from_event(e)
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// Translation
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if(dotgrid.tool.vertex_at(this.pos)){
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this.translate(this.pos,this.pos,e.shiftKey)
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}
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dotgrid.guide.refresh();
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dotgrid.interface.refresh();
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e.preventDefault();
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}
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this.last_pos = {x:0,y:0}
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this.move = function(e)
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{
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this.pos = this.pos_from_event(e)
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// Translation
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if(this.translation){
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this.translate(null,this.pos)
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}
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if(this.last_pos.x != this.pos.x || this.last_pos.y != this.pos.y){
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dotgrid.guide.refresh();
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}
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dotgrid.interface.refresh();
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e.preventDefault();
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this.last_pos = this.pos;
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}
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this.up = function(e)
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{
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this.pos = this.pos_from_event(e)
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if(e.altKey){ dotgrid.tool.remove_segments_at(this.pos); this.translate(); return; }
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if(this.translation && !is_equal(this.translation.from,this.translation.to)){
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if(this.translation.multi){ dotgrid.tool.translate_multi(this.translation.from,this.translation.to); }
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else{ dotgrid.tool.translate(this.translation.from,this.translation.to); }
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}
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else if(e.target.id == "guide"){
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dotgrid.tool.add_vertex({x:this.pos.x,y:this.pos.y});
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}
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this.translate();
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dotgrid.interface.refresh();
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dotgrid.guide.refresh();
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e.preventDefault();
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}
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this.alt = function(e)
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{
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this.pos = this.pos_from_event(e)
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dotgrid.tool.remove_segments_at(this.pos);
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e.preventDefault();
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setTimeout(() => { dotgrid.tool.clear(); },150);
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}
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// Position Mods
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this.pos_from_event = function(e)
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{
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return this.pos_snap(this.pos_relative({x:e.clientX,y:e.clientY}))
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}
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this.pos_relative = function(pos)
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{
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return {
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x:pos.x - dotgrid.guide.el.offsetLeft,
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y:pos.y - dotgrid.guide.el.offsetTop
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};
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}
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this.pos_snap = function(pos)
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{
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var grid = dotgrid.tool.settings.size.width/dotgrid.grid_x;
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return {
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x:clamp(step(pos.x,grid),grid,dotgrid.tool.settings.size.width),
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y:clamp(step(pos.y,grid),grid,dotgrid.tool.settings.size.height+grid)
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};
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}
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function is_equal(a,b){ return a.x == b.x && a.y == b.y; }
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} |