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transformlist branch: update comments/notes, remove logging 

git-svn-id: http://svg-edit.googlecode.com/svn/branches/transformlist@921 eee81c28-f429-11dd-99c0-75d572ba1ddd
master
Jeff Schiller 2009-11-09 21:05:57 +00:00
parent 8488743d55
commit 0fc63a2992
1 changed files with 31 additions and 8 deletions
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39
editor/svgcanvas.js
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@ -1383,7 +1383,7 @@ function BatchCommand(text) {
// always remove translates by transferring them down to the children
// otherwise just reduce adjacent scales
// The first pass is to flatten all translates into one
// The first pass is to collapse all translates
var n = tlist.numberOfItems;
while (n--) {
var xform = tlist.getItem(n);
@ -1401,15 +1401,39 @@ function BatchCommand(text) {
tlist.removeItem(n);
}
// now restore just the one translate
// its matrix before transferring down
if (tx != 0 || ty != 0) {
var newxlate = svgroot.createSVGTransform();
newxlate.setTranslate(tx,ty);
tlist.insertItemBefore(newxlate, 0);
// TODO: can we pass the translates down to the individual children?
/*
// get the matrix of the remaining transformlist
var mat = svgroot.createSVGMatrix();
var m = tlist.numberOfItems;
while (m--) {
mat = matrixMultiply(tlist.getItem(m).matrix, mat);
}
mat = mat.inverse();
var mv = transformPoint(tx,ty,mat);
var children = selected.childNodes;
var c = children.length;
while (c--) {
var child = children.item(c);
if (child.nodeType == 1) {
var childTlist = canvas.getTransformList(child);
var newxlate = svgroot.createSVGTransform();
newxlate.setTranslate(mv.x,mv.y);
childTlist.insertItemBefore(newxlate, 0);
batchCmd.addSubCommand( recalculateDimensions(child) );
}
}
*/
}
// TODO: The second pass is to find all adjacent transform sets of the form:
// translate(tx,ty) scale(sx,sy) translate(-tx,-ty) and reduce them
// to one set (multiply sx and sy)
// The second pass is to find all adjacent transform sets of the form:
// translate(tx,ty) scale(sx,sy) translate(-tx,-ty) and collapse them
tx = 0;
ty = 0;
var bGotOffset = false;
@ -1423,7 +1447,6 @@ function BatchCommand(text) {
var sobj = transformToObj(xform);
sx *= sobj.sx;
sy *= sobj.sy;
console.log([sx,sy]);
if (!bGotOffset) {
var tobj = transformToObj(tlist.getItem(n-1));
tx = tobj.tx;
@ -1434,10 +1457,11 @@ function BatchCommand(text) {
tlist.removeItem(n+1);
tlist.removeItem(n);
tlist.removeItem(n-1);
// decrement one more so that we're not off the end of the transformlist
// after removing three transforms above
n--;
}
// now restore just the one scale and its offset translates
console.log('final scales: ' + sx + ',' + sy);
if (sx != 1 || sy != 1) {
var newscale = svgroot.createSVGTransform(),
offset_p = svgroot.createSVGTransform(),
@ -5035,8 +5059,7 @@ function BatchCommand(text) {
// place to insert a rotate. This would be searching from the end of the tlist and
// going back until we either:
// - find an existing rotate OR
// - find a translate that is not part of a scale (in the reduced case, this will mean
// two translates next to each other)
// - find a translate that is not part of a scale
this.setRotationAngle = function(val,preventUndo) {
var elem = selectedElements[0];
// we use the actual element's bbox (not the calculated one) since the