236 lines
7.0 KiB
JavaScript
236 lines
7.0 KiB
JavaScript
function Guide()
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{
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this.el = document.createElement("canvas");
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this.el.id = "guide";
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this.el.width = 640;
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this.el.height = 640;
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this.el.style.width = "320px";
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this.el.style.height = "320px";
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this.show_extras = true;
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this.scale = 2;
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this.start = function()
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{
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this.clear();
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this.refresh();
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}
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this.refresh = function(force = false)
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{
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this.clear();
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this.el.getContext('2d').restore();
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if(dotgrid.tool.index == 2){ this.draw_markers() ; this.draw_vertices() }
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this.draw_path(new Generator(dotgrid.tool.layers[2],dotgrid.tool.styles[2]).toString({x:0,y:0},this.scale),dotgrid.tool.styles[2])
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if(dotgrid.tool.index == 1){ this.draw_markers() ; this.draw_vertices() }
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this.draw_path(new Generator(dotgrid.tool.layers[1],dotgrid.tool.styles[1]).toString({x:0,y:0},this.scale),dotgrid.tool.styles[1])
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if(dotgrid.tool.index == 0){ this.draw_markers(); this.draw_vertices() }
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this.draw_path(new Generator(dotgrid.tool.layers[0],dotgrid.tool.styles[0]).toString({x:0,y:0},this.scale),dotgrid.tool.styles[0])
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this.draw_handles()
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this.draw_translation();
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this.draw_cursor();
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this.draw_preview();
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}
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this.clear = function()
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{
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this.el.getContext('2d').clearRect(0, 0, this.el.width*this.scale, this.el.height*this.scale);
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}
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this.toggle = function()
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{
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this.show_extras = this.show_extras ? false : true;
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this.refresh()
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}
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this.resize = function(size)
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{
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var offset = 15
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this.el.width = (size.width+offset)*this.scale;
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this.el.height = (size.height+(offset*2))*this.scale;
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this.el.style.width = (size.width+offset)+"px";
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this.el.style.height = (size.height+(offset*2))+"px";
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this.refresh();
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}
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this.draw_handles = function()
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{
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if(!this.show_extras){ return; }
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for(segment_id in dotgrid.tool.layer()){
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var segment = dotgrid.tool.layer()[segment_id];
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for(vertex_id in segment.vertices){
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var vertex = segment.vertices[vertex_id];
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this.draw_handle(vertex);
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}
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}
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}
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this.draw_vertices = function()
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{
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for(id in dotgrid.tool.vertices){
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this.draw_vertex(dotgrid.tool.vertices[id]);
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}
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}
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this.draw_markers = function()
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{
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if(!this.show_extras){ return; }
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var cursor = {x:parseInt(dotgrid.cursor.pos.x/dotgrid.grid_width),y:parseInt(dotgrid.cursor.pos.y/dotgrid.grid_width)}
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for (var x = dotgrid.grid_x-1; x >= 0; x--) {
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for (var y = dotgrid.grid_y; y >= 0; y--) {
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var is_step = x % dotgrid.block_x == 0 && y % dotgrid.block_y == 0;
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// Color
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var color = is_step ? dotgrid.theme.active.f_med : dotgrid.theme.active.f_low;
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if((y == 0 || y == dotgrid.grid_y) && cursor.x == x+1){ color = dotgrid.theme.active.f_high; }
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else if((x == 0 || x == dotgrid.grid_x-1) && cursor.y == y+1){ color = dotgrid.theme.active.f_high; }
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else if(cursor.x == x+1 && cursor.y == y+1){ color = dotgrid.theme.active.f_high; }
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this.draw_marker({
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x:parseInt(x * dotgrid.grid_width) + dotgrid.grid_width,
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y:parseInt(y * dotgrid.grid_height) + dotgrid.grid_height
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},is_step ? 2.5 : 1.5,color);
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}
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}
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}
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this.draw_marker = function(pos,radius = 1,color)
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{
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var ctx = this.el.getContext('2d');
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ctx.beginPath();
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ctx.lineWidth = 2;
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ctx.arc(pos.x * this.scale, pos.y * this.scale, radius, 0, 2 * Math.PI, false);
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ctx.fillStyle = color;
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ctx.fill();
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ctx.closePath();
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}
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this.draw_vertex = function(pos, radius = 5)
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{
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var ctx = this.el.getContext('2d');
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ctx.beginPath();
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ctx.lineWidth = 2;
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ctx.arc((pos.x * this.scale), (pos.y * this.scale), radius, 0, 2 * Math.PI, false);
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ctx.fillStyle = dotgrid.theme.active.f_med;
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ctx.fill();
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ctx.closePath();
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}
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this.draw_handle = function(pos, radius = 6)
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{
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var ctx = this.el.getContext('2d');
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ctx.beginPath();
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ctx.lineWidth = 3;
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ctx.lineCap="round";
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ctx.arc(Math.abs(pos.x * -this.scale), Math.abs(pos.y * this.scale), radius+3, 0, 2 * Math.PI, false);
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ctx.fillStyle = dotgrid.theme.active.f_high;
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ctx.fill();
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ctx.strokeStyle = dotgrid.theme.active.f_high;
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ctx.stroke();
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ctx.closePath();
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ctx.beginPath();
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ctx.arc((pos.x * this.scale), (pos.y * this.scale), radius, 0, 2 * Math.PI, false);
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ctx.fillStyle = dotgrid.theme.active.f_low;
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ctx.fill();
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ctx.closePath();
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ctx.beginPath();
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ctx.arc((pos.x * this.scale), (pos.y * this.scale), radius-3, 0, 2 * Math.PI, false);
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ctx.fillStyle = dotgrid.theme.active.f_high;
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ctx.fill();
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ctx.closePath();
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}
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this.draw_path = function(path,style)
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{
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var ctx = this.el.getContext('2d');
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var p = new Path2D(path);
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ctx.strokeStyle = style.color;
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ctx.lineWidth = style.thickness * this.scale;
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ctx.lineCap = style.strokeLinecap;
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ctx.lineJoin = style.strokeLinejoin;
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if(style.fill && style.fill != "none"){
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ctx.fillStyle = style.color
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ctx.fill(p);
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}
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if(style.strokeLineDash){
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ctx.setLineDash(style.strokeLineDash);
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}
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else{
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ctx.setLineDash([]);
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}
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ctx.stroke(p);
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}
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this.draw_translation = function()
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{
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if(!dotgrid.cursor.translation){ return; }
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var ctx = this.el.getContext('2d');
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ctx.beginPath();
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ctx.moveTo((dotgrid.cursor.translation.from.x * this.scale),(dotgrid.cursor.translation.from.y * this.scale));
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ctx.lineTo((dotgrid.cursor.translation.to.x * this.scale),(dotgrid.cursor.translation.to.y * this.scale));
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ctx.lineCap="round";
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ctx.lineWidth = 5;
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ctx.strokeStyle = dotgrid.theme.active.b_inv;
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ctx.setLineDash([5,10]);
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ctx.stroke();
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ctx.setLineDash([0,0]);
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ctx.closePath();
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}
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this.draw_cursor = function(pos = dotgrid.cursor.pos,radius = dotgrid.tool.style().thickness-1)
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{
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var ctx = this.el.getContext('2d');
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ctx.beginPath();
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ctx.lineWidth = 3;
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ctx.lineCap = "round";
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ctx.arc(Math.abs(pos.x * -this.scale), Math.abs(pos.y * this.scale), 5, 0, 2 * Math.PI, false);
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ctx.strokeStyle = dotgrid.theme.active.background;
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ctx.stroke();
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ctx.closePath();
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ctx.beginPath();
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ctx.lineWidth = 3;
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ctx.lineCap = "round";
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ctx.arc(Math.abs(pos.x * -this.scale), Math.abs(pos.y * this.scale), clamp(radius,5,100), 0, 2 * Math.PI, false);
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ctx.strokeStyle = dotgrid.theme.active.f_med;
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ctx.stroke();
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ctx.closePath();
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}
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this.draw_preview = function()
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{
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var operation = dotgrid.cursor.operation && dotgrid.cursor.operation.cast ? dotgrid.cursor.operation.cast : null
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if(!dotgrid.tool.can_cast(operation)){ return; }
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if(operation == "close"){ return; }
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var path = new Generator([{vertices:dotgrid.tool.vertices,type:operation}]).toString({x:0,y:0},2)
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var style = {
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color:dotgrid.theme.active.f_med,
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thickness:2,
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strokeLinecap:"round",
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strokeLinejoin:"round",
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strokeLineDash:[5, 15]
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}
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this.draw_path(path,style)
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}
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function pos_is_equal(a,b){ return a && b && Math.abs(a.x) == Math.abs(b.x) && Math.abs(a.y) == Math.abs(b.y) }
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function clamp(v, min, max) { return v < min ? min : v > max ? max : v; }
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}
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