fixes for #3436

Author: dhowe

src/typography/p5.Font.js

@@ -12,12 +12,6 @@
 var p5 = require('../core/main');
 var constants = require('../core/constants');
 
-/*
- * TODO:
- * -- kerning
- * -- alignment: justified?
- */
-
 /**
  * Base class for font handling
  * @class p5.Font
@@ -35,11 +29,6 @@ p5.Font = function(p) {
   this.font = undefined;
 };
 
-p5.Font.prototype.list = function() {
-  // TODO
-  throw new Error('not yet implemented');
-};
-
 /**
  * Returns a tight bounding box for the given text string using this
  * font (currently only supports single lines)
@@ -85,21 +74,28 @@ p5.Font.prototype.list = function() {
  *words Lorem ipsum dol go off canvas and contained by white bounding box
  *
  */
-p5.Font.prototype.textBounds = function(str, x, y, fontSize, options) {
+p5.Font.prototype.textBounds = function(str, x, y, fontSize, opts) {
   x = x !== undefined ? x : 0;
   y = y !== undefined ? y : 0;
-  fontSize = fontSize || this.parent._renderer._textSize;
 
   // Check cache for existing bounds. Take into consideration the text alignment
   // settings. Default alignment should match opentype's origin: left-aligned &
   // alphabetic baseline.
-  var p =
-      (options && options.renderer && options.renderer._pInst) || this.parent,
-    renderer = p._renderer,
-    alignment = renderer._textAlign || constants.LEFT,
-    baseline = renderer._textBaseline || constants.BASELINE,
-    key = cacheKey('textBounds', str, x, y, fontSize, alignment, baseline),
+  var p = (opts && opts.renderer && opts.renderer._pInst) || this.parent,
+    ctx = p._renderer.drawingContext,
+    alignment = ctx.textAlign || constants.LEFT,
+    baseline = ctx.textBaseline || constants.BASELINE,
+    cacheResults = false,
+    result,
+    key;
+
+  fontSize = fontSize || p._renderer._textSize;
+
+  // NOTE: cache disabled for now pending further discussion of #3436
+  if (cacheResults) {
+    key = cacheKey('textBounds', str, x, y, fontSize, alignment, baseline);
     result = this.cache[key];
+  }
 
   if (!result) {
     var minX,
@@ -111,7 +107,7 @@ p5.Font.prototype.textBounds = function(str, x, y, fontSize, options) {
       yCoords = [],
       scale = this._scale(fontSize);
 
-    this.font.forEachGlyph(str, x, y, fontSize, options, function(
+    this.font.forEachGlyph(str, x, y, fontSize, opts, function(
       glyph,
       gX,
       gY,
@@ -139,7 +135,7 @@ p5.Font.prototype.textBounds = function(str, x, y, fontSize, options) {
 
     // Bounds are now calculated, so shift the x & y to match alignment settings
     pos = this._handleAlignment(
-      renderer,
+      p._renderer,
       str,
       result.x,
       result.y,
@@ -149,9 +145,9 @@ p5.Font.prototype.textBounds = function(str, x, y, fontSize, options) {
     result.x = pos.x;
     result.y = pos.y;
 
-    this.cache[
-      cacheKey('textBounds', str, x, y, fontSize, alignment, baseline)
-    ] = result;
+    if (cacheResults) {
+      this.cache[key] = result;
+    }
   }
 
   return result;
@@ -494,8 +490,7 @@ function pathToPoints(cmds, options) {
   }
 
   if (opts.simplifyThreshold) {
-    /*var count = */ simplify(pts, opts.simplifyThreshold);
-    //console.log('Simplify: removed ' + count + ' pts');
+    simplify(pts, opts.simplifyThreshold);
   }
 
   return pts;
@@ -1238,8 +1233,7 @@ function base3(t, p1, p2, p3, p4) {
 function cacheKey() {
   var hash = '';
   for (var i = arguments.length - 1; i >= 0; --i) {
-    var v = arguments[i];
-    hash += v === Object(v) ? JSON.stringify(v) : v;
+    hash += '？' + arguments[i];
   }
   return hash;
 }