X-Git-Url: https://git-public.kairo.at/?p=mandelbrot-web.git;a=blobdiff_plain;f=js%2Fmandelbrot.js;h=385ff2eeb7c0ce7d6f16cfce02e35dfa1c5fec08;hp=ed49cc4fe2ed8de4b9060d383108e6f9a3c78a26;hb=51442fd43fc24ec7e8c2cf3d7231b21ff59e5911;hpb=6a7aa57d0bffbcea1bb023ceb86dd47d8710214b

diff --git a/js/mandelbrot.js b/js/mandelbrot.js
index ed49cc4..385ff2e 100644
--- a/js/mandelbrot.js
+++ b/js/mandelbrot.js
@@ -1,83 +1,207 @@
-/* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is KaiRo.at Mandelbrot, XULRunner version.
- *
- * The Initial Developer of the Original Code is
- * Robert Kaiser <kairo@kairo.at>.
- * Portions created by the Initial Developer are Copyright (C) 2008-210
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *   Robert Kaiser <kairo@kairo.at>
- *   Boris Zbarsky <bzbarsky@mit.edu>
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+var gMainCanvas, gMainContext;
 var gColorPalette = [];
 var gStartTime = 0;
+var gCurrentImageData;
+var gLastImageData;
 
-function drawImage() {
-  var canvas = document.getElementById("mbrotImage");
-  var context = canvas.getContext("2d");
+function Startup() {
+  gMainCanvas = document.getElementById("mbrotImage");
+  gMainContext = gMainCanvas.getContext("2d");
 
-  document.getElementById("calcTime").textContent = "--";
+  gMainCanvas.addEventListener("mouseup", imgEvHandler, false);
+  gMainCanvas.addEventListener("mousedown", imgEvHandler, false);
+  gMainCanvas.addEventListener("mousemove", imgEvHandler, false);
+  gMainCanvas.addEventListener("touchstart", imgEvHandler, false);
+  gMainCanvas.addEventListener("touchend", imgEvHandler, false);
+  gMainCanvas.addEventListener("touchcancel", imgEvHandler, false);
+  gMainCanvas.addEventListener("touchleave", imgEvHandler, false);
+  gMainCanvas.addEventListener("touchmove", imgEvHandler, false);
 
-  gColorPalette = getColorPalette(document.getElementById("palette").value);
+  var initTile = new Image();
+  initTile.src = "style/initial-overview.png";
+  gMainContext.drawImage(initTile, 0, 0);
+}
+
+function getAdjustVal(aName) {
+  var value;
+  switch (aName) {
+    case "image.width":
+    case "image.height":
+      value = 0;
+      try {
+        value = document.getElementById(aName.replace(".", "_")).value;
+      }
+      catch (e) { }
+      if ((value < 10) || (value > 5000)) {
+        value = 300;
+        //document.getElementById(aName.replace(".", "_")).value = value;
+      }
+      return value;
+    case "last_image.Cr_*":
+      var Cr_min = -2.0;
+      var Cr_max = 1.0;
+      try {
+        Cr_min = parseFloat(document.getElementById("Cr_min").value);
+        Cr_max = parseFloat(document.getElementById("Cr_max").value);
+      }
+      catch (e) { }
+      if ((Cr_min < -3) || (Cr_min > 2) ||
+          (Cr_max < -3) || (Cr_max > 2) || (Cr_min >= Cr_max)) {
+        Cr_min = -2.0; Cr_max = 1.0;
+      }
+      document.getElementById("Cr_min").value = Cr_min;
+      document.getElementById("Cr_max").value = Cr_max;
+      return {Cr_min: Cr_min, Cr_max: Cr_max};
+    case "last_image.Ci_*":
+      var Ci_min = -1.5;
+      var Ci_max = 1.5;
+      try {
+        Ci_min = parseFloat(document.getElementById("Ci_min").value);
+        Ci_max = parseFloat(document.getElementById("Ci_max").value);
+      }
+      catch (e) { }
+      if ((Ci_min < -2.5) || (Ci_min > 2.5) ||
+          (Ci_max < -2.5) || (Ci_max > 2.5) || (Ci_min >= Ci_max)) {
+        Ci_min = -1.5; Ci_max = 1.5;
+      }
+      document.getElementById("Ci_min").value = Ci_min;
+      document.getElementById("Ci_max").value = Ci_max;
+      return {Ci_min: Ci_min, Ci_max: Ci_max};
+    case "iteration_max":
+      value = 500;
+      try {
+        value = document.getElementById("iterMax").value;
+      }
+      catch (e) {
+        setIter(value);
+      }
+      if (value < 10 || value > 10000) {
+        value = 500;
+        setIter(value);
+      }
+      return value;
+    case "use_algorithm":
+      value = "numeric";
+      try {
+        value = document.getElementById("algorithm").value;
+      }
+      catch (e) {
+        setAlgorithm(value);
+      }
+      return value;
+   case "color_palette":
+      value = "kairo";
+      try {
+        value = document.getElementById("palette").value;
+      }
+      catch(e) {
+        setPalette(value);
+      }
+      return value;
+   case "syncProportions":
+      value = true;
+      try {
+        value = document.getElementById("proportional").value;
+      }
+      catch(e) {
+        document.getElementById("proportional").value = value;
+      }
+      return value;
+    default:
+      return false;
+  }
+}
 
-  var Cr_min = -2.0;
-  var Cr_max = 1.0;
-  try {
-    Cr_min = parseFloat(document.getElementById("Cr_min").value);
-    Cr_max = parseFloat(document.getElementById("Cr_max").value);
+function setVal(aName, aValue) {
+  switch (aName) {
+    case "image.width":
+    case "image.height":
+      document.getElementById(aName.replace(".", "_")).value = value;
+      break;
+    case "last_image.Cr_*":
+      document.getElementById("Cr_min").value = aValue.Cr_min;
+      document.getElementById("Cr_max").value = aValue.Cr_max;
+      break;
+    case "last_image.Ci_*":
+      document.getElementById("Ci_min").value = aValue.Ci_min;
+      document.getElementById("Ci_max").value = aValue.Ci_max;
+      break;
+    case "iteration_max":
+      setIter(aValue);
+      break;
+    case "use_algorithm":
+      setAlgorithm(aValue);
+      break;
+   case "color_palette":
+      setPalette(valueaValue);
+      break;
+   case "syncProportions":
+      document.getElementById("proportional").value = aValue;
+      break;
   }
-  catch (e) { }
-  if ((Cr_min < -2) || (Cr_min > 2) ||
-      (Cr_max < -2) || (Cr_max > 2) || (Cr_min >= Cr_max)) {
-    Cr_min = -2.0; Cr_max = 1.0;
+}
+
+function adjustCoordsAndDraw(aC_min, aC_max) {
+  var iWidth = getAdjustVal("image.width");
+  var iHeight = getAdjustVal("image.height");
+
+  // correct coordinates
+  if (aC_min.r < -2)
+    aC_min.r = -2;
+  if (aC_max.r > 2)
+    aC_max.r = 2;
+  if ((aC_min.r > 2) || (aC_max.r < -2) || (aC_min.r >= aC_max.r)) {
+    aC_min.r = -2.0; aC_max.r = 1.0;
   }
-  document.getElementById("Cr_min").value = Cr_min;
-  document.getElementById("Cr_max").value = Cr_max;
-
-  var Ci_min = -1.5;
-  var Ci_max = 1.5;
-  try {
-    Ci_min = parseFloat(document.getElementById("Ci_min").value);
-    Ci_max = parseFloat(document.getElementById("Ci_max").value);
+  if (aC_min.i < -2)
+    aC_min.i = -2;
+  if (aC_max.i > 2)
+    aC_max.i = 2;
+  if ((aC_min.i > 2) || (aC_max.i < -2) || (aC_min.i >= aC_max.i)) {
+    aC_min.i = -1.3; aC_max.i = 1.3;
   }
-  catch (e) { }
-  if ((Ci_min < -2) || (Ci_min > 2) ||
-      (Ci_max < -2) || (Ci_max > 2) || (Ci_min >= Ci_max)) {
-    Ci_min = -1.5; Ci_max = 1.5;
+
+  var CWidth = aC_max.r - aC_min.r;
+  var CHeight = aC_max.i - aC_min.i;
+  var C_mid = new complex(aC_min.r + CWidth / 2, aC_min.i + CHeight / 2);
+
+  var CRatio = Math.max(CWidth / iWidth, CHeight / iHeight);
+
+  setVal("last_image.Cr_*", {Cr_min: C_mid.r - iWidth * CRatio / 2,
+                             Cr_max: C_mid.r + iWidth * CRatio / 2});
+  setVal("last_image.Ci_*", {Ci_min: C_mid.i - iHeight * CRatio / 2,
+                             Ci_max: C_mid.i + iHeight * CRatio / 2});
+
+  drawImage();
+}
+
+function drawImage() {
+  var canvas = gMainCanvas;
+  var context = gMainContext;
+
+  document.getElementById("calcTime").textContent = "--";
+
+  if (gCurrentImageData) {
+    gLastImageData = gCurrentImageData;
+    document.getElementById("backButton").disabled = false;
   }
-  document.getElementById("Ci_min").value = Ci_min;
-  document.getElementById("Ci_max").value = Ci_max;
 
-  //var algorithm = gPref.getCharPref("mandelbrot.use_algorithm");
-  var iterMax = parseInt(document.getElementById("iterMax").value);
-  var algorithm = "numeric"; //"oo"
+  gColorPalette = getColorPalette(document.getElementById("palette").value);
+
+  var Cr_vals = getAdjustVal("last_image.Cr_*");
+  var Cr_min = Cr_vals.Cr_min;
+  var Cr_max = Cr_vals.Cr_max;
+
+  var Ci_vals = getAdjustVal("last_image.Ci_*");
+  var Ci_min = Ci_vals.Ci_min;
+  var Ci_max = Ci_vals.Ci_max;
+
+  var iterMax = getAdjustVal("iteration_max");
+  var algorithm = getAdjustVal("use_algorithm");
 
   var iWidth = canvas.width;
   if ((iWidth < 10) || (iWidth > 5000)) {
@@ -90,6 +214,14 @@ function drawImage() {
     canvas.height = iHeight;
   }
 
+  gCurrentImageData = {
+    C_min: new complex(Cr_min, Ci_min),
+    C_max: new complex(Cr_max, Ci_max),
+    iWidth: iWidth,
+    iHeight: iHeight,
+    iterMax: iterMax
+  };
+
   context.fillStyle = "rgba(255, 255, 255, 127)";
   context.fillRect(0, 0, canvas.width, canvas.height);
 
@@ -243,6 +375,59 @@ function getColorPalette(palName) {
       }
       palette[1024] = [0, 0, 0, 255];
       break;
+    case 'rainbow-squared1':
+      for (var i = 0; i < 34; i++) {
+        var cc = Math.floor(i * 255 / 33);
+        palette[i] = [cc, 0, 0, 255];
+      }
+      for (var i = 0; i < 137; i++) {
+        var cc = Math.floor(i * 255 / 136);
+        palette[34 + i] = [255, cc, 0, 255];
+      }
+      for (var i = 0; i < 307; i++) {
+        var cc = Math.floor(i * 255 / 306);
+        palette[171 + i] = [255 - cc, 255, cc, 255];
+      }
+      for (var i = 0; i < 546; i++) {
+        var cc = Math.floor(i * 255 / 545);
+        palette[478 + i] = [cc, 255 - cc, 255, 255];
+      }
+      palette[1024] = [0, 0, 0, 255];
+      break;
+    case 'rainbow-linear2':
+      for (var i = 0; i < 205; i++) {
+        var cc = Math.floor(i * 255 / 204);
+        palette[i] = [255, cc, 0, 255];
+        palette[204 + i] = [255 - cc, 255, 0, 255];
+        palette[409 + i] = [0, 255, cc, 255];
+        palette[614 + i] = [0, 255 - cc, 255, 255];
+        palette[819 + i] = [cc, 0, 255, 255];
+      }
+      palette[1024] = [0, 0, 0, 255];
+      break;
+    case 'rainbow-squared2':
+      for (var i = 0; i < 19; i++) {
+        var cc = Math.floor(i * 255 / 18);
+        palette[i] = [255, cc, 0, 255];
+      }
+      for (var i = 0; i < 74; i++) {
+        var cc = Math.floor(i * 255 / 73);
+        palette[19 + i] = [255 - cc, 255, 0, 255];
+      }
+      for (var i = 0; i < 168; i++) {
+        var cc = Math.floor(i * 255 / 167);
+        palette[93 + i] = [0, 255, cc, 255];
+      }
+      for (var i = 0; i < 298; i++) {
+        var cc = Math.floor(i * 255 / 297);
+        palette[261 + i] = [0, 255 - cc, 255, 255];
+      }
+      for (var i = 0; i < 465; i++) {
+        var cc = Math.floor(i * 255 / 464);
+        palette[559 + i] = [cc, 0, 255, 255];
+      }
+      palette[1024] = [0, 0, 0, 255];
+      break;
   }
   return palette;
 }
@@ -263,6 +448,99 @@ function drawPoint(context, img_x, img_y, C, iterMax, algorithm) {
 
 // ########## UI functions ##########
 
+var zoomstart;
+var imgBackup;
+var zoomTouchID;
+
+var imgEvHandler = {
+  handleEvent: function(aEvent) {
+    var canvas = document.getElementById("mbrotImage");
+    var context = canvas.getContext("2d");
+    var touchEvent = aEvent.type.indexOf('touch') != -1;
+
+    // Bail out if this is neither a touch nor left-click.
+    if (!touchEvent && aEvent.button != 0)
+      return;
+
+    // Bail out if the started touch can't be found.
+    if (touchEvent && zoomstart &&
+        !aEvent.changedTouches.identifiedTouch(zoomTouchID))
+      return;
+
+    var coordObj = touchEvent ?
+                   aEvent.changedTouches.identifiedTouch(zoomTouchID) :
+                   aEvent;
+
+    switch (aEvent.type) {
+      case 'mousedown':
+      case 'touchstart':
+        if (touchEvent) {
+          zoomTouchID = aEvent.changedTouches.item(0).identifier;
+          coordObj = aEvent.changedTouches.identifiedTouch(zoomTouchID);
+        }
+        // left button - start dragzoom
+        zoomstart = {x: coordObj.clientX - canvas.offsetLeft,
+                     y: coordObj.clientY - canvas.offsetTop};
+        imgBackup = context.getImageData(0, 0, canvas.width, canvas.height);
+        break;
+      case 'mouseup':
+      case 'touchend':
+        if (zoomstart) {
+          context.putImageData(imgBackup, 0, 0);
+          var zoomend = {x: coordObj.clientX - canvas.offsetLeft,
+                         y: coordObj.clientY - canvas.offsetTop};
+
+          // make sure zoomend is bigger than zoomstart
+          if ((zoomend.x == zoomstart.x) || (zoomend.y == zoomstart.y)) {
+            // cannot zoom what has no area, discard it
+            zoomstart = undefined;
+            return;
+          }
+          if (zoomend.x < zoomstart.x)
+            [zoomend.x, zoomstart.x] = [zoomstart.x, zoomend.x];
+          if (zoomend.y < zoomstart.y)
+            [zoomend.y, zoomstart.y] = [zoomstart.y, zoomend.y];
+
+          if (gCurrentImageData) {
+            // determine new "coordinates"
+            var CWidth = gCurrentImageData.C_max.r - gCurrentImageData.C_min.r;
+            var CHeight = gCurrentImageData.C_max.i - gCurrentImageData.C_min.i;
+            var newC_min = new complex(
+                gCurrentImageData.C_min.r + zoomstart.x / gCurrentImageData.iWidth * CWidth,
+                gCurrentImageData.C_min.i + zoomstart.y / gCurrentImageData.iHeight * CHeight);
+            var newC_max = new complex(
+                gCurrentImageData.C_min.r + zoomend.x / gCurrentImageData.iWidth * CWidth,
+                gCurrentImageData.C_min.i + zoomend.y / gCurrentImageData.iHeight * CHeight);
+          }
+          else {
+            var newC_min = new complex(-2, -1.5);
+            var newC_max = new complex(1, 1.5);
+          }
+
+          adjustCoordsAndDraw(newC_min, newC_max);
+        }
+        zoomstart = undefined;
+        break;
+      case 'mousemove':
+      case 'touchmove':
+        if (zoomstart) {
+          context.putImageData(imgBackup, 0, 0);
+          context.strokeStyle = "rgb(255,255,31)";
+          context.strokeRect(zoomstart.x, zoomstart.y,
+                             coordObj.clientX - canvas.offsetLeft - zoomstart.x,
+                             coordObj.clientY - canvas.offsetTop - zoomstart.y);
+        }
+        break;
+    }
+  }
+};
+
+function drawIfEmpty() {
+  if (!gCurrentImageData) {
+    drawImage();
+  }
+}
+
 function toggleSettings() {
   var fs = document.getElementById("settings");
   if (fs.style.display != "block") {
@@ -271,4 +549,27 @@ function toggleSettings() {
   else {
     fs.style.display = "none";
   }
-}
\ No newline at end of file
+}
+
+function goBack() {
+  if (gLastImageData) {
+    document.getElementById("iterMax").value = gLastImageData.iterMax;
+    // use gLastImageData.iWidth, gLastImageData.iHeight ???
+    adjustCoordsAndDraw(gLastImageData.C_min, gLastImageData.C_max);
+    gLastImageData = undefined;
+    document.getElementById("backButton").disabled = true;
+  }
+}
+
+function setIter(aIter) {
+  document.getElementById("iterMax").value = aIter;
+}
+
+function setPalette(aPaletteID) {
+  document.getElementById("palette").value = aPaletteID;
+  gColorPalette = getColorPalette(aPaletteID);
+}
+
+function setAlgorithm(algoID) {
+  //document.getElementById("algorithm").value = algoID;
+}