transformlist branch: collapse adjacent group scales to one translate-scale-translate
git-svn-id: http://svg-edit.googlecode.com/svn/branches/transformlist@918 eee81c28-f429-11dd-99c0-75d572ba1dddmaster
Jeff Schiller
parent
29551a877a
commit
0d61f80f93
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@ -1376,18 +1376,18 @@ function BatchCommand(text) {
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var origcenter = {x: (box.x+box.width/2), y: (box.y+box.height/2)};
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var origcenter = {x: (box.x+box.width/2), y: (box.y+box.height/2)};
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var newcenter = {x: origcenter.x, y: origcenter.y};
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var newcenter = {x: origcenter.x, y: origcenter.y};
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var currentMatrix = {a:1, b:0, c:0, d:1, e:0, f:0};
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var currentMatrix = {a:1, b:0, c:0, d:1, e:0, f:0};
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var tx = 0, ty = 0, sx = 1, sy = 1, r = 0.0;
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var tx = 0.0, ty = 0.0, sx = 1.0, sy = 1.0, r = 0.0;
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// if it's a group, we have special reduction loops
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// if it's a group, we have special reduction loops to flatten transforms
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if (selected.tagName == "g") {
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if (selected.tagName == "g") {
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// always remove translates by transferring them down to the children
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// always remove translates by transferring them down to the children
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// otherwise just reduce adjacent scales
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// otherwise just reduce adjacent scales
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// The first pass is to remove all translates unless it is immediately
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// The first pass is to flatten all translates into one
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// after or before a scale
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var n = tlist.numberOfItems;
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var n = tlist.numberOfItems;
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while (n--) {
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while (n--) {
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var xform = tlist.getItem(n);
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var xform = tlist.getItem(n);
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// only flatten the translate if it is not before or after a scale
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if (xform.type != 2 || (n < (tlist.numberOfItems-1) && tlist.getItem(n+1).type == 3) ||
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if (xform.type != 2 || (n < (tlist.numberOfItems-1) && tlist.getItem(n+1).type == 3) ||
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(n > 0 && tlist.getItem(n-1).type == 3))
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(n > 0 && tlist.getItem(n-1).type == 3))
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{
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{
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@ -1402,7 +1402,7 @@ function BatchCommand(text) {
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}
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}
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// now restore just the one translate
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// now restore just the one translate
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if (tx != 0 || ty != 0) {
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if (tx != 0 || ty != 0) {
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var newxlate = svgroot.createSVGTransform(0);
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var newxlate = svgroot.createSVGTransform();
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newxlate.setTranslate(tx,ty);
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newxlate.setTranslate(tx,ty);
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tlist.insertItemBefore(newxlate, 0);
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tlist.insertItemBefore(newxlate, 0);
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}
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}
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@ -1410,184 +1410,218 @@ function BatchCommand(text) {
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// TODO: The second pass is to find all adjacent transform sets of the form:
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// TODO: The second pass is to find all adjacent transform sets of the form:
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// translate(tx,ty) scale(sx,sy) translate(-tx,-ty) and reduce them
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// translate(tx,ty) scale(sx,sy) translate(-tx,-ty) and reduce them
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// to one set (multiply sx and sy)
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// to one set (multiply sx and sy)
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tx = 0;
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ty = 0;
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var bGotOffset = false;
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n = tlist.numberOfItems;
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n = tlist.numberOfItems;
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while (n--) {
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while (n--) {
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var xform = tlist.getItem(n);
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if (!xform || xform.type != 3) {
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continue;
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}
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var sobj = transformToObj(xform);
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sx *= sobj.sx;
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sy *= sobj.sy;
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console.log([sx,sy]);
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if (!bGotOffset) {
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var tobj = transformToObj(tlist.getItem(n-1));
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tx = tobj.tx;
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ty = tobj.ty;
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bGotOffset = true;
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}
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// remove the scale and translates from the group
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tlist.removeItem(n+1);
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tlist.removeItem(n);
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tlist.removeItem(n-1);
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n--;
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}
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// now restore just the one scale and its offset translates
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console.log('final scales: ' + sx + ',' + sy);
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if (sx != 1 || sy != 1) {
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var newscale = svgroot.createSVGTransform(),
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offset_p = svgroot.createSVGTransform(),
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offset_n = svgroot.createSVGTransform();
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offset_n.setTranslate(-tx,-ty);
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offset_p.setTranslate(tx,ty);
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newscale.setScale(sx,sy);
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tlist.appendItem(offset_p);
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tlist.appendItem(newscale);
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tlist.appendItem(offset_n);
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}
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}
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return batchCmd;
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}
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}
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// else, it's a non-group
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// else, it's a non-group
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else {
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// This pass loop in reverse order and removes any translates or scales.
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// This pass loop in reverse order and removes any translates or scales.
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// Once we hit our first rotate(), we will only remove translates.
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// Once we hit our first rotate(), we will only remove translates.
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var bRemoveTransform = true;
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var bRemoveTransform = true;
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n = tlist.numberOfItems;
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n = tlist.numberOfItems;
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while (n--) {
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while (n--) {
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// once we reach an unmoveable transform, we can stop
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// once we reach an unmoveable transform, we can stop
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var xform = tlist.getItem(n);
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var xform = tlist.getItem(n);
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var m = xform.matrix;
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var m = xform.matrix;
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// if translate...
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// if translate...
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var remap = null, scalew = null, scaleh = null;
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var remap = null, scalew = null, scaleh = null;
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switch (xform.type) {
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switch (xform.type) {
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case 2: // TRANSLATE - always remove
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case 2: // TRANSLATE - always remove
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remap = function(x,y) { return transformPoint(x,y,m); };
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remap = function(x,y) { return transformPoint(x,y,m); };
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scalew = function(w) { return w; }
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scaleh = function(h) { return h; }
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break;
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case 3: // SCALE - only remove if we haven't hit a rotate
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if (!bRemoveTransform) continue;
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remap = function(x,y) { return transformPoint(x,y,m); };
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scalew = function(w) { return m.a * w; }
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scaleh = function(h) { return m.d * h; }
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break;
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case 4: // ROTATE - only re-center if we haven't previously hit a rotate
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if (!bRemoveTransform) continue;
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// if the new center of the shape has moved, then
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// re-center the rotation, and determine the movement
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// offset required to keep the shape in the same place
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if (origcenter.x != newcenter.x || origcenter.y != newcenter.y) {
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var alpha = xform.angle * Math.PI / 180.0;
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// determine where the new rotated center should be
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var dx = newcenter.x - origcenter.x,
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dy = newcenter.y - origcenter.y,
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r = Math.sqrt(dx*dx + dy*dy),
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theta = Math.atan2(dy,dx) + alpha;
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var cx = r * Math.cos(theta) + origcenter.x,
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cy = r * Math.sin(theta) + origcenter.y;
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dx = cx - newcenter.x;
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dy = cy - newcenter.y;
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remap = function(x,y) {
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return { x: x + dx, y: y + dy };
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};
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scalew = function(w) { return w; }
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scalew = function(w) { return w; }
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scaleh = function(h) { return h; }
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scaleh = function(h) { return h; }
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// this latches to false once we hit our first rotate transform
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bRemoveTransform = false;
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var newrot = svgroot.createSVGTransform();
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newrot.setRotate(xform.angle, cx, cy);
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tlist.replaceItem(newrot, n);
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}
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break;
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// fall through to the default: continue below
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default:
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continue;
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}
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if (!remap) continue;
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newcenter = remap(box.x+box.width/2, box.y+box.height/2);
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var bpt = remap(box.x,box.y);
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box.x = bpt.x;
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box.y = bpt.y;
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box.width = scalew(box.width);
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box.height = scaleh(box.height);
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switch (selected.tagName)
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{
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case "line":
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var pt1 = remap(changes["x1"],changes["y1"]),
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pt2 = remap(changes["x2"],changes["y2"]);
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changes["x1"] = pt1.x;
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changes["y1"] = pt1.y;
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changes["x2"] = pt2.x;
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changes["y2"] = pt2.y;
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break;
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case "circle":
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var c = remap(changes["cx"],changes["cy"]);
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changes["cx"] = c.x;
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changes["cy"] = c.y;
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// take the minimum of the new selected box's dimensions for the new circle radius
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changes["r"] = Math.min(box.width/2,box.height/2);
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break;
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case "ellipse":
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var c = remap(changes["cx"],changes["cy"]);
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changes["cx"] = c.x;
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changes["cy"] = c.y;
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changes["rx"] = scalew(changes["rx"]);
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changes["ry"] = scaleh(changes["ry"]);
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break;
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case "rect":
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case "image":
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var pt1 = remap(changes["x"],changes["y"]);
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changes["x"] = pt1.x;
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changes["y"] = pt1.y;
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changes["width"] = scalew(changes["width"]);
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changes["height"] = scaleh(changes["height"]);
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break;
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case "text":
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var pt1 = remap(changes["x"],changes["y"]);
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changes["x"] = pt1.x;
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changes["y"] = pt1.y;
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break;
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case "polygon":
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case "polyline":
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var len = changes["points"].length;
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for (var i = 0; i < len; ++i) {
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var pt = changes["points"][i];
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pt = remap(pt.x,pt.y);
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changes["points"][i].x = pt.x;
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changes["points"][i].y = pt.y;
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}
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break;
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case "path":
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var len = changes["d"].length;
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var firstseg = changes["d"][0];
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var firstpt = remap(firstseg.x,firstseg.y);
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changes["d"][0].x = firstpt.x;
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changes["d"][0].y = firstpt.y;
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for (var i = 1; i < len; ++i) {
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var seg = changes["d"][i];
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var type = seg.type;
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// if absolute or first segment, we want to remap x, y, x1, y1, x2, y2
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// if relative, we want to scalew, scaleh
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if (type % 2 == 0) { // absolute
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var pt = remap(seg.x,seg.y),
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pt1 = remap(seg.x1,seg.y1),
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pt2 = remap(seg.x2,seg.y2);
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seg.x = pt.x;
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seg.y = pt.y;
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seg.x1 = pt1.x;
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seg.y1 = pt1.y;
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seg.x2 = pt2.x;
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seg.y2 = pt2.y;
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seg.r1 = scalew(seg.r1),
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seg.r2 = scaleh(seg.r2);
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}
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else { // relative
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seg.x = scalew(seg.x);
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seg.y = scaleh(seg.y);
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seg.x1 = scalew(seg.x1);
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seg.y1 = scaleh(seg.y1);
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seg.x2 = scalew(seg.x2);
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seg.y2 = scaleh(seg.y2);
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seg.r1 = scalew(seg.r1),
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seg.r2 = scaleh(seg.r2);
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}
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} // for each segment
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break;
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} // switch on element type to get initial values
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// we have eliminated the transform, so remove it from the list
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if (bRemoveTransform) {
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tlist.removeItem(n);
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}
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// now loop through the other transforms and adjust accordingly
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for ( var j = n; j < tlist.numberOfItems; ++j) {
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var changed_xform = tlist.getItem(j);
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switch (changed_xform.type) {
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// TODO: TRANSLATE, SCALE?
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case 4: // rotate
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var newrot = svgroot.createSVGTransform();
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newrot.setRotate(changed_xform.angle, newcenter.x, newcenter.y);
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tlist.replaceItem(newrot, j);
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break;
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break;
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case 3: // SCALE - only remove if we haven't hit a rotate
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if (!bRemoveTransform) continue;
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remap = function(x,y) { return transformPoint(x,y,m); };
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scalew = function(w) { return m.a * w; }
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scaleh = function(h) { return m.d * h; }
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break;
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case 4: // ROTATE - only re-center if we haven't previously hit a rotate
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if (!bRemoveTransform) continue;
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// if the new center of the shape has moved, then
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// re-center the rotation, and determine the movement
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// offset required to keep the shape in the same place
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if (origcenter.x != newcenter.x || origcenter.y != newcenter.y) {
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var alpha = xform.angle * Math.PI / 180.0;
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// determine where the new rotated center should be
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var dx = newcenter.x - origcenter.x,
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dy = newcenter.y - origcenter.y,
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r = Math.sqrt(dx*dx + dy*dy),
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theta = Math.atan2(dy,dx) + alpha;
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var cx = r * Math.cos(theta) + origcenter.x,
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cy = r * Math.sin(theta) + origcenter.y;
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dx = cx - newcenter.x;
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dy = cy - newcenter.y;
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remap = function(x,y) {
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return { x: x + dx, y: y + dy };
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};
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scalew = function(w) { return w; }
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scaleh = function(h) { return h; }
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// this latches to false once we hit our first rotate transform
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bRemoveTransform = false;
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var newrot = svgroot.createSVGTransform();
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newrot.setRotate(xform.angle, cx, cy);
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tlist.replaceItem(newrot, n);
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}
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break;
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// fall through to the default: continue below
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default:
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continue;
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}
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}
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}
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if (!remap) continue;
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} // looping for each transform
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newcenter = remap(box.x+box.width/2, box.y+box.height/2);
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var bpt = remap(box.x,box.y);
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box.x = bpt.x;
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box.y = bpt.y;
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box.width = scalew(box.width);
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box.height = scaleh(box.height);
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switch (selected.tagName)
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{
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case "line":
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var pt1 = remap(changes["x1"],changes["y1"]),
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pt2 = remap(changes["x2"],changes["y2"]);
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changes["x1"] = pt1.x;
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changes["y1"] = pt1.y;
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changes["x2"] = pt2.x;
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changes["y2"] = pt2.y;
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break;
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case "circle":
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var c = remap(changes["cx"],changes["cy"]);
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changes["cx"] = c.x;
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changes["cy"] = c.y;
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// take the minimum of the new selected box's dimensions for the new circle radius
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changes["r"] = Math.min(box.width/2,box.height/2);
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break;
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case "ellipse":
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var c = remap(changes["cx"],changes["cy"]);
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changes["cx"] = c.x;
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changes["cy"] = c.y;
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changes["rx"] = scalew(changes["rx"]);
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changes["ry"] = scaleh(changes["ry"]);
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break;
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case "rect":
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case "image":
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var pt1 = remap(changes["x"],changes["y"]);
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changes["x"] = pt1.x;
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changes["y"] = pt1.y;
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changes["width"] = scalew(changes["width"]);
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changes["height"] = scaleh(changes["height"]);
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||||||
|
break;
|
||||||
|
case "text":
|
||||||
|
var pt1 = remap(changes["x"],changes["y"]);
|
||||||
|
changes["x"] = pt1.x;
|
||||||
|
changes["y"] = pt1.y;
|
||||||
|
break;
|
||||||
|
case "polygon":
|
||||||
|
case "polyline":
|
||||||
|
var len = changes["points"].length;
|
||||||
|
for (var i = 0; i < len; ++i) {
|
||||||
|
var pt = changes["points"][i];
|
||||||
|
pt = remap(pt.x,pt.y);
|
||||||
|
changes["points"][i].x = pt.x;
|
||||||
|
changes["points"][i].y = pt.y;
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case "path":
|
||||||
|
var len = changes["d"].length;
|
||||||
|
var firstseg = changes["d"][0];
|
||||||
|
var firstpt = remap(firstseg.x,firstseg.y);
|
||||||
|
changes["d"][0].x = firstpt.x;
|
||||||
|
changes["d"][0].y = firstpt.y;
|
||||||
|
for (var i = 1; i < len; ++i) {
|
||||||
|
var seg = changes["d"][i];
|
||||||
|
var type = seg.type;
|
||||||
|
// if absolute or first segment, we want to remap x, y, x1, y1, x2, y2
|
||||||
|
// if relative, we want to scalew, scaleh
|
||||||
|
if (type % 2 == 0) { // absolute
|
||||||
|
var pt = remap(seg.x,seg.y),
|
||||||
|
pt1 = remap(seg.x1,seg.y1),
|
||||||
|
pt2 = remap(seg.x2,seg.y2);
|
||||||
|
seg.x = pt.x;
|
||||||
|
seg.y = pt.y;
|
||||||
|
seg.x1 = pt1.x;
|
||||||
|
seg.y1 = pt1.y;
|
||||||
|
seg.x2 = pt2.x;
|
||||||
|
seg.y2 = pt2.y;
|
||||||
|
seg.r1 = scalew(seg.r1),
|
||||||
|
seg.r2 = scaleh(seg.r2);
|
||||||
|
}
|
||||||
|
else { // relative
|
||||||
|
seg.x = scalew(seg.x);
|
||||||
|
seg.y = scaleh(seg.y);
|
||||||
|
seg.x1 = scalew(seg.x1);
|
||||||
|
seg.y1 = scaleh(seg.y1);
|
||||||
|
seg.x2 = scalew(seg.x2);
|
||||||
|
seg.y2 = scaleh(seg.y2);
|
||||||
|
seg.r1 = scalew(seg.r1),
|
||||||
|
seg.r2 = scaleh(seg.r2);
|
||||||
|
}
|
||||||
|
} // for each segment
|
||||||
|
break;
|
||||||
|
} // switch on element type to get initial values
|
||||||
|
|
||||||
|
// we have eliminated the transform, so remove it from the list
|
||||||
|
if (bRemoveTransform) {
|
||||||
|
tlist.removeItem(n);
|
||||||
|
}
|
||||||
|
|
||||||
|
// now loop through the other transforms and adjust accordingly
|
||||||
|
for ( var j = n; j < tlist.numberOfItems; ++j) {
|
||||||
|
var changed_xform = tlist.getItem(j);
|
||||||
|
switch (changed_xform.type) {
|
||||||
|
// TODO: TRANSLATE, SCALE?
|
||||||
|
case 4: // rotate
|
||||||
|
var newrot = svgroot.createSVGTransform();
|
||||||
|
newrot.setRotate(changed_xform.angle, newcenter.x, newcenter.y);
|
||||||
|
tlist.replaceItem(newrot, j);
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
} // looping for each transform
|
||||||
|
} // a non-group
|
||||||
|
|
||||||
// now we have a set of changes and an applied reduced transform list
|
// now we have a set of changes and an applied reduced transform list
|
||||||
// we apply the changes directly to the DOM
|
// we apply the changes directly to the DOM
|
||||||
|
|
@ -1661,7 +1695,6 @@ function BatchCommand(text) {
|
||||||
|
|
||||||
// remove any stray identity transforms
|
// remove any stray identity transforms
|
||||||
if (tlist && tlist.numberOfItems > 0) {
|
if (tlist && tlist.numberOfItems > 0) {
|
||||||
var removeItems = [];
|
|
||||||
var k = tlist.numberOfItems;
|
var k = tlist.numberOfItems;
|
||||||
while (k--) {
|
while (k--) {
|
||||||
var xform = tlist.getItem(k);
|
var xform = tlist.getItem(k);
|
||||||
|
|
@ -3492,9 +3525,10 @@ function BatchCommand(text) {
|
||||||
|
|
||||||
selectorManager.requestSelector(selected).showGrips(true);
|
selectorManager.requestSelector(selected).showGrips(true);
|
||||||
}
|
}
|
||||||
|
// always recalculate dimensions to strip off stray identity transforms
|
||||||
|
recalculateAllSelectedDimensions();
|
||||||
// if it was being dragged/resized
|
// if it was being dragged/resized
|
||||||
if (x != start_x || y != start_y) {
|
if (x != start_x || y != start_y) {
|
||||||
recalculateAllSelectedDimensions();
|
|
||||||
var len = selectedElements.length;
|
var len = selectedElements.length;
|
||||||
for (var i = 0; i < len; ++i) {
|
for (var i = 0; i < len; ++i) {
|
||||||
if (selectedElements[i] == null) break;
|
if (selectedElements[i] == null) break;
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue