stubs marching in contour example
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Francisco Dans
parent
0dfea8fd01
commit
9759ad8b94
@ -24,27 +24,86 @@
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var cellsX = grid[0].length-1;
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var cellsY = grid.length-1;
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var contourValues = [0,2];
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var lines = [];
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var pointsTraveled = new Set();
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for(var c = 0; c < contourValues.length; c++){
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for (var y = 0; y < cellsY; y++){
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for (var x = 0; x < cellsX; x++){
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var pointerX = 0, pointerY = 0, x = 0, y = 0;
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var line = [];
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var xy = march(0,0);
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while(xy){
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xy = march(xy.x, xy.y);
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}
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function march(x,y){
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var marchTo;
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if(x >= grid[0].length){
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pointerX = 0;
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pointerY++;
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}
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if (y > grid.length) return;
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if (pointsTraveled.has(x+":"+y) && line.length === 0){
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pointerX ++;
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return {x: pointerX, y: pointerY };
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}
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else{
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pointsTraveled.add(x+":"+y);
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var currentCell = [grid[y][x], grid[y][x+1], grid[y+1][x+1], grid[y+1][x]];
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var pipe = getPipe(currentCell, contourValues[c]);
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var pipe = getPipe(currentCell, contourValues[c], line);
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if (pipe){
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ctx.beginPath();
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ctx.moveTo(20 + x*20 + 20 * pipe[0][0], 20 + y*20 + 20 * pipe[0][1]);
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ctx.lineTo(20 + x*20 + 20 * pipe[1][0], 20 + y*20 + 20 * pipe[1][1]);
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ctx.stroke();
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if (pipe.length === 4){
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ctx.beginPath();
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ctx.moveTo(20 + x*20 + 20 * pipe[2][0], 20 + y*20 + 20 * pipe[2][1]);
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ctx.lineTo(20 + x*20 + 20 * pipe[3][0], 20 + y*20 + 20 * pipe[3][1]);
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ctx.stroke();
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if (line.length > 0 && (x+":"+y === line[0].coordStr)){
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lines.push(line);
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line = [];
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pointerX ++;
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return {x: pointerX, y: pointerY };
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}
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else{
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var next = pipe.next[0];
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if(line.length > 0){
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var gp = line[line.length-1].gridPos;
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if(x + pipe.next[0][0] === gp[0] && y + pipe.next[0][1] === gp[1]){
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next = pipe.next[1]
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}
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}
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line.push({"pipe": pipe, "coordStr": x+":"+y, geom: [20 + x*20 + 20 * pipe.c[0][0], 20 + y*20 + 20 * pipe.c[0][1], 20 + x*20 + 20 * pipe.c[1][0], 20 + y*20 + 20 * pipe.c[1][1]] , "gridPos": [x, y]});
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return {x: x + next[0], y: y + next[1] };
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}
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}
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else{
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pointerX ++;
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return {x: pointerX, y: pointerY };
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}
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}
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}
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}
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debugger;
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function callback(){
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console.log("wololo");
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}
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// for(var c = 0; c < contourValues.length; c++){
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// for (var y = 0; y < cellsY; y++){
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// for (var x = 0; x < cellsX; x++){
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// var currentCell = [grid[y][x], grid[y][x+1], grid[y+1][x+1], grid[y+1][x]];
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// var pipe = getPipe(currentCell, contourValues[c], line);
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// if (pipe){
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// ctx.beginPath();
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// ctx.moveTo(20 + x*20 + 20 * pipe[0][0], 20 + y*20 + 20 * pipe[0][1]);
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// ctx.lineTo(20 + x*20 + 20 * pipe[1][0], 20 + y*20 + 20 * pipe[1][1]);
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// ctx.stroke();
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// if (pipe.length === 4){
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// ctx.beginPath();
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// ctx.moveTo(20 + x*20 + 20 * pipe[2][0], 20 + y*20 + 20 * pipe[2][1]);
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// ctx.lineTo(20 + x*20 + 20 * pipe[3][0], 20 + y*20 + 20 * pipe[3][1]);
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// ctx.stroke();
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// }
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// }
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// }
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// }
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// }
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function gridData(tile){
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var res = 16;
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var grid = new Array(256/res);
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@ -63,7 +122,7 @@
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return grid;
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}
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function getPipe(cell, contour){
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function getPipe(cell, contour, line){
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var parsedCell = cell.map(function(cornerValue){
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if (cornerValue > contour){
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return "1";
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@ -75,24 +134,38 @@
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S = [lerp(cell[2], cell[3], contour), 1],
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E = [1, lerp(cell[2], cell[1], contour)],
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W = [0, lerp(cell[3], cell[0], contour)]
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// Blank
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if (type === 0 || type === 15) return null;
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// W - S
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if (type === 1 || type === 14) return [W, S]
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// S - E
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if (type === 2 || type === 13) return [S, E]
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// W - E
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if (type === 3 || type === 12) return [W, E]
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// N - E
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if (type === 4 || type === 11) return [N, E]
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// N - S
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if (type === 6 || type === 9) return [N, S]
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// W - N
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if (type === 7 || type === 8) return [W, N]
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// W - N / S - E
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if (type === 5) return [W, N, S, E]
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// W - S / N - E
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if (type === 10) return [W, S, N, E]
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if (type === 1 || type === 14) return {"c":[W, S], "next": [[0,1],[-1,0]]}
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if (type === 2 || type === 13) return {"c":[S, E], "next": [[1,0],[0,1]]}
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if (type === 3 || type === 12) return {"c":[W, E], "next": [[1,0],[-1,0]]}
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if (type === 4 || type === 11) return {"c":[N, E], "next": [[1,0],[0,-1]]}
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if (type === 6 || type === 9) return {"c":[N, S], "next": [[0,1],[0,-1]]}
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if (type === 7 || type === 8) return {"c":[W, N], "next": [[0,-1],[-1,0]]}
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if (type === 5) {
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if(JSON.stringify(line[line.length-1].pipe.next).indexOf("[1,0]")){
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return {"c":[W, N], "next": [[0,-1],[-1,0]]}
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}
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else{
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return {"c":[S, E], "next": [[1,0],[0,1]]}
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}
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}
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if (type === 10) {
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if(JSON.stringify(line[line.length-1].pipe.next).indexOf("[1,0]")){
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return {"c":[N, E], "next": [[1,0],[0,-1]]}
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}
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else{
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return {"c":[W, S], "next": [[0,1],[-1,0]]}
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}
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}
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}
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// Linear interpolation
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