141 lines
3.2 KiB
JavaScript
141 lines
3.2 KiB
JavaScript
function Tool()
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{
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this.index = 0;
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this.layers = [];
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this.verteces = [];
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this.reqs = {line:2,arc_c:2,arc_r:2,bezier:3,close:0};
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this.layer = function()
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{
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if(!this.layers[this.index]){
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this.layers[this.index] = [];
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}
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return this.layers[this.index];
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}
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this.remove_segment = function()
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{
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this.layer().pop();
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this.clear();
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dotgrid.draw();
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}
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this.add_vertex = function(pos)
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{
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this.verteces.push(pos);
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}
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this.cast = function(type)
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{
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if(!this.layer()){ this.layers[this.index] = []; }
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if(!this.can_cast(type)){ console.log("Not enough verteces"); return; }
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this.layer().push({type:type,verteces:this.verteces.slice()})
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this.clear();
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dotgrid.draw();
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dotgrid.history.push(this.layers);
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console.log(`Casted ${type} -> ${this.layer().length} elements`);
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}
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this.can_cast = function(type)
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{
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return this.verteces.length >= this.reqs[type];
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}
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this.path = function()
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{
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var html = "";
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for(id in this.layer()){
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var segment = this.layer()[id];
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console.log(segment)
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html += this.render(segment);
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}
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return html
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}
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this.render = function(segment)
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{
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var type = segment.type;
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var verteces = segment.verteces;
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var html = ``;
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var skip = 0;
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if(type == "close"){
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return `Z `;
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}
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for(id in verteces){
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if(skip > 0){ skip -= 1; continue; }
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if(id == 0){ html += `M${verteces[id].x},${verteces[id].y} `; continue; }
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var vertex = verteces[id];
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var next = verteces[parseInt(id)+1]
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var after_next = verteces[parseInt(id)+2]
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if(type == "line"){
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html += `L${vertex.x},${vertex.y} `;
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}
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else if(type == "arc_c" && next){
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html += `A${next.x - vertex.x},${next.y - vertex.y} 0 0,1 ${next.x},${next.y} `;
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skip = 1
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}
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else if(type == "arc_r" && next){
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html += `A${next.x - vertex.x},${next.y - vertex.y} 0 0,0 ${next.x},${next.y} `;
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skip = 1
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}
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else if(type == "bezier" && next && after_next){
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html += `Q${next.x},${next.y} ${after_next.x},${after_next.y} `;
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skip = 2
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}
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}
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return html
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}
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this.vertex_at = function(pos)
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{
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for(segment_id in this.layer()){
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var segment = this.layer()[segment_id];
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for(vertex_id in segment.verteces){
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var vertex = segment.verteces[vertex_id];
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if(vertex.x == Math.abs(pos.x) && vertex.y == Math.abs(pos.y)){
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return vertex;
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}
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}
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}
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return null;
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}
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this.translate = function(a,b)
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{
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for(segment_id in this.layer()){
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var segment = this.layer()[segment_id];
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for(vertex_id in segment.verteces){
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var vertex = segment.verteces[vertex_id];
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if(vertex.x == Math.abs(a.x) && vertex.y == Math.abs(a.y)){
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segment.verteces[vertex_id] = {x:Math.abs(b.x),y:Math.abs(b.y)};
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}
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}
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}
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dotgrid.history.push(this.layers);
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dotgrid.draw();
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}
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this.clear = function()
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{
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this.verteces = [];
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dotgrid.draw();
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}
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this.undo = function()
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{
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this.layers = dotgrid.history.prev();
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dotgrid.draw();
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}
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this.redo = function()
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{
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this.layers = dotgrid.history.next();
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dotgrid.draw();
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}
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} |