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-rwxr-xr-xjs/helper-classes/backup-delete/GLBrushStroke.js174
1 files changed, 169 insertions, 5 deletions
diff --git a/js/helper-classes/backup-delete/GLBrushStroke.js b/js/helper-classes/backup-delete/GLBrushStroke.js
index 5d773c2d..26c922a3 100755
--- a/js/helper-classes/backup-delete/GLBrushStroke.js
+++ b/js/helper-classes/backup-delete/GLBrushStroke.js
@@ -31,6 +31,8 @@ function GLBrushStroke() {
31 //stroke information 31 //stroke information
32 this._strokeWidth = 0.0; 32 this._strokeWidth = 0.0;
33 this._strokeColor = [0.4, 0.4, 0.4, 1.0]; 33 this._strokeColor = [0.4, 0.4, 0.4, 1.0];
34 this._secondStrokeColor = this._strokeColor;
35 this._strokeHardness = 100;
34 this._strokeMaterial; 36 this._strokeMaterial;
35 this._strokeStyle = "Solid"; 37 this._strokeStyle = "Solid";
36 38
@@ -39,7 +41,7 @@ function GLBrushStroke() {
39 this._WETNESS_FACTOR = 0.25; 41 this._WETNESS_FACTOR = 0.25;
40 42
41 //prevent extremely long paths that can take a long time to render 43 //prevent extremely long paths that can take a long time to render
42 this._MAX_ALLOWED_SAMPLES = 500; 44 this._MAX_ALLOWED_SAMPLES = 5000;
43 45
44 //drawing context 46 //drawing context
45 this._world = null; 47 this._world = null;
@@ -79,7 +81,7 @@ function GLBrushStroke() {
79 //add the point only if it is some epsilon away from the previous point 81 //add the point only if it is some epsilon away from the previous point
80 var numPoints = this._Points.length; 82 var numPoints = this._Points.length;
81 if (numPoints>0) { 83 if (numPoints>0) {
82 var threshold = this._WETNESS_FACTOR*this._strokeWidth; 84 var threshold = 1;//this._WETNESS_FACTOR*this._strokeWidth;
83 var prevPt = this._Points[numPoints-1]; 85 var prevPt = this._Points[numPoints-1];
84 var diffPt = [prevPt[0]-pt[0], prevPt[1]-pt[1]]; 86 var diffPt = [prevPt[0]-pt[0], prevPt[1]-pt[1]];
85 var diffPtMag = Math.sqrt(diffPt[0]*diffPt[0] + diffPt[1]*diffPt[1]); 87 var diffPtMag = Math.sqrt(diffPt[0]*diffPt[0] + diffPt[1]*diffPt[1]);
@@ -106,6 +108,8 @@ function GLBrushStroke() {
106 this.setStrokeMaterial = function (m) { this._strokeMaterial = m; } 108 this.setStrokeMaterial = function (m) { this._strokeMaterial = m; }
107 this.getStrokeColor = function () { return this._strokeColor; } 109 this.getStrokeColor = function () { return this._strokeColor; }
108 this.setStrokeColor = function (c) { this._strokeColor = c; } 110 this.setStrokeColor = function (c) { this._strokeColor = c; }
111 this.setSecondStrokeColor = function(c){this._secondStrokeColor=c;}
112 this.setStrokeHardness = function(h){this._strokeHardness=h;}
109 this.getStrokeStyle = function () { return this._strokeStyle; } 113 this.getStrokeStyle = function () { return this._strokeStyle; }
110 this.setStrokeStyle = function (s) { this._strokeStyle = s; } 114 this.setStrokeStyle = function (s) { this._strokeStyle = s; }
111 115
@@ -133,13 +137,14 @@ function GLBrushStroke() {
133 this._Points[i][2]+=tz; 137 this._Points[i][2]+=tz;
134 } 138 }
135 } 139 }
136 140
137 this.computeMetaGeometry = function(){ 141 this.computeMetaGeometry = function(){
138 if (this._dirty){ 142 if (this._dirty){
139 var numPoints = this._Points.length; 143 var numPoints = this._Points.length;
140 144
141 //**** add samples to the path if needed...linear interpolation for now 145 //**** add samples to the path if needed...linear interpolation for now
142 if (numPoints>1) { 146 //if (numPoints>1) {
147 if (0){
143 var threshold = this._WETNESS_FACTOR*this._strokeWidth; 148 var threshold = this._WETNESS_FACTOR*this._strokeWidth;
144 var prevPt = this._Points[0]; 149 var prevPt = this._Points[0];
145 var prevIndex = 0; 150 var prevIndex = 0;
@@ -171,6 +176,44 @@ function GLBrushStroke() {
171 } 176 }
172 } 177 }
173 178
179 //**** add samples to the long sections of the path --- Catmull-Rom spline interpolation
180 if (numPoints>1) {
181 var numInsertedPoints = 0;
182 var threshold = 5;//0.25*this._strokeWidth; //this determines whether a segment between two sample is too long
183 var prevPt = this._Points[0];
184 for (var i=1;i<numPoints;i++){
185 var pt = this._Points[i];
186 var diff = [pt[0]-prevPt[0], pt[1]-prevPt[1]];
187 var distance = Math.sqrt(diff[0]*diff[0]+diff[1]*diff[1]);
188 if (distance>threshold){
189 //build the control polygon for the Catmull-Rom spline (prev. 2 points and next 2 points)
190 var prev = (i===1) ? i-1 : i-2;
191 var next = (i===numPoints-1) ? i : i+1;
192 var ctrlPts = [this._Points[prev], this._Points[i-1], this._Points[i], this._Points[next]];
193 //insert points along the prev. to current point
194 var numNewPoints = Math.floor(distance/threshold);
195 for (var j=0;j<numNewPoints;j++){
196 var param = (j+1)/(numNewPoints+1);
197 var newpt = this._CatmullRomSplineInterpolate(ctrlPts, param);
198 //insert new point before point i
199 this._Points.splice(i, 0, newpt);
200 i++;
201 numInsertedPoints++;
202 }
203 this._dirty=true;
204 }
205 prevPt=pt;
206 //update numPoints to match the new length
207 numPoints = this._Points.length;
208
209 //end this function if the numPoints has gone above the max. size specified
210 if (numPoints> this._MAX_ALLOWED_SAMPLES){
211 console.log("leaving the resampling because numPoints is greater than limit:"+this._MAX_ALLOWED_SAMPLES);
212 break;
213 }
214 }
215 console.log("Inserted "+numInsertedPoints+" additional CatmullRom points");
216 }
174 // *** compute the bounding box ********* 217 // *** compute the bounding box *********
175 this._BBoxMin = [Infinity, Infinity, Infinity]; 218 this._BBoxMin = [Infinity, Infinity, Infinity];
176 this._BBoxMax = [-Infinity, -Infinity, -Infinity]; 219 this._BBoxMax = [-Infinity, -Infinity, -Infinity];
@@ -331,7 +374,109 @@ function GLBrushStroke() {
331 } 374 }
332 */ 375 */
333 376
377 /*
378 //build the stamp for the brush stroke
379 //todo get this directly from the UI
380 var t=0;
381 var numTraces = this._strokeWidth;
382 var halfNumTraces = numTraces/2;
383 var startPos = [-this._strokeWidth/2,0];
384 var brushStamp = [];
385
386 //build an angled (calligraphic) brush stamp
387 var deltaDisplacement = [1,1];//[this._strokeWidth/numTraces, 0]; //a horizontal line brush
388 for (t=0;t<numTraces;t++){
389 var brushPt = [startPos[0]+t*deltaDisplacement[0], startPos[1]+t*deltaDisplacement[1]];
390 brushStamp.push(brushPt);
391 }
392
393
394 //make a circular brush stamp
395 brushStamp=[];
396 numTraces = this._strokeWidth*Math.PI; //figure out how to
397 var radius = this._strokeWidth/2;
398 for (t=0;t<numTraces;t++)
399 {
400 var angle = Math.PI*(360*t/numTraces)/180;
401 var brushPt = [radius*Math.cos(angle), radius*Math.sin(angle)];
402 brushStamp.push(brushPt);
403 }
404
405// //make a square brush stamp
406// STOPPED HERE
407// brushStamp = [];
408// numTraces = 4*strokeWidth;
409// for (t=0;t<numTraces;t++){
410// if (t<numTraces*0.25){
411// var brushPt = [startPos[0]+t*deltaDisplacement[0], startPos[1]+t*deltaDisplacement[1]];
412// } else if (t<numTraces*0.5){
413//
414// } else if (t<numTraces*0.75){
415//
416// } else {
417//
418// }
419// brushStamp.push(brushPt);
420// }
421
422 for (t=0;t<numTraces;t++){
423 var disp = [brushStamp[t][0], brushStamp[t][1]];
424 //ctx.globalCompositeOperation = 'source-over';
425 var distFromMiddle = Math.abs(halfNumTraces-t);
426 var alphaVal = 1.0 - (100-this._strokeHardness)*(distFromMiddle/halfNumTraces)/100;
427 alphaVal = 0.2;
428 ctx.save();
429 ctx.lineWidth=this._strokeWidth/10;//todo figure out the correct formula for the line width
430 if (ctx.lineWidth<2)
431 ctx.lineWidth=2;
432 if (t===numTraces-1){
433 ctx.lineWidth = 1;
434 }
435 ctx.lineJoin="bevel";
436 ctx.lineCap="butt";
437 //if (t<numTraces/2)
438 ctx.strokeStyle="rgba("+parseInt(255*this._strokeColor[0])+","+parseInt(255*this._strokeColor[1])+","+parseInt(255*this._strokeColor[2])+","+alphaVal+")";
439 //else
440 // ctx.strokeStyle="rgba("+parseInt(255*this._secondStrokeColor[0])+","+parseInt(255*this._secondStrokeColor[1])+","+parseInt(255*this._secondStrokeColor[2])+","+alphaVal+")";
441 ctx.translate(disp[0],disp[1]);
442 ctx.beginPath();
443 ctx.moveTo(this._Points[0][0]-bboxMin[0], this._Points[0][1]-bboxMin[1]);
444 for (var i=0;i<numPoints;i++){
445 ctx.lineTo(this._Points[i][0]-bboxMin[0], this._Points[i][1]-bboxMin[1]);
446 }
447 ctx.stroke();
448 ctx.restore();
449 }
450 */
451
452 /*
453 //debugging path
454 ctx.beginPath();
455 ctx.moveTo(this._Points[0][0]-bboxMin[0], this._Points[0][1]-bboxMin[1]);
456 for (var i=1;i<numPoints;i++){
457 ctx.lineTo(this._Points[i][0]-bboxMin[0], this._Points[i][1]-bboxMin[1]);
458 }
459 ctx.lineWidth=1.0;
460 ctx.strokeStyle = "black";
461 ctx.stroke();
462 */
334 463
464 var numlayers = this._strokeWidth/2;
465 var alphaVal = 1.0/(numlayers-1);
466 for (var l=0;l<numlayers;l++){
467 ctx.beginPath();
468 ctx.moveTo(this._Points[0][0]-bboxMin[0], this._Points[0][1]-bboxMin[1]);
469 for (var i=1;i<numPoints;i++){