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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>Von:</b> Squeak-dev <squeak-dev-bounces@lists.squeakfoundation.org> im Auftrag von commits@source.squeak.org <commits@source.squeak.org><br>
<b>Gesendet:</b> Freitag, 7. Februar 2020 23:38:45<br>
<b>An:</b> squeak-dev@lists.squeakfoundation.org<br>
<b>Betreff:</b> [squeak-dev] The Inbox: Morphic-kfr.1619.mcz</font>
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<div class="PlainText">A new version of Morphic was added to project The Inbox:<br>
<a href="http://source.squeak.org/inbox/Morphic-kfr.1619.mcz">http://source.squeak.org/inbox/Morphic-kfr.1619.mcz</a><br>
<br>
==================== Summary ====================<br>
<br>
Name: Morphic-kfr.1619<br>
Author: kfr<br>
Time: 7 February 2020, 11:38:33.017512 pm<br>
UUID: 7e9d5c46-aad5-ed46-b88d-22f30b5f597f<br>
Ancestors: Morphic-cmm.1618<br>
<br>
Enhancement for PolygonMorph. When a vertex is dropped it will snap if it is close to another PolygonMorphs vertex. It is possible to toggle functionality on/ off in menu.<br>
( With suggestion from Christoph Thiede about basing snapping distance on screen resolution)<br>
<br>
=============== Diff against Morphic-cmm.1618 ===============<br>
<br>
Item was changed:<br>
BorderedMorph subclass: #PolygonMorph<br>
+ instanceVariableNames: 'vertices closed filledForm arrows arrowForms smoothCurve curveState borderDashSpec handles borderForm snapToOtherPolygons'<br>
- instanceVariableNames: 'vertices closed filledForm arrows arrowForms smoothCurve curveState borderDashSpec handles borderForm'<br>
classVariableNames: ''<br>
poolDictionaries: ''<br>
category: 'Morphic-Basic'!<br>
<br>
!PolygonMorph commentStamp: 'md 2/24/2006 20:34' prior: 0!<br>
This class implements a morph which can behave as four different objects depending on the the following two facts:<br>
- is it OPEN or CLOSED?<br>
- is it SEGMENTED or SMOOTHED.<br>
<br>
1. The OPEN and SEGMENTED variant looks like polyline.<br>
<br>
2. The OPEN and SMOOTHED variant looks like spline (kind of curve)<br>
<br>
3. The CLOSED and SEGMENTED variant looks like polygon. This is actually what you get when you do<br>
PolygonMorph new openInWorld<br>
You get a triangle. See below how to manipulate these objects...<br>
<br>
4. The CLOSED and SMOOTHED variant looks like blob (???)<br>
<br>
Prototypes of this morph can also be found in "Object Catalog". Several (different variants) of this object are among "Basic" morphs.<br>
<br>
Explore the assiciated morph-menu. It enables you<br>
- to toggle showing of "handles". They make it possible to<br>
- reposition already existing vertices (by moving yellow handles)<br>
- create new vertices (by moving green handles)<br>
- delete already existing vertices (by dragging and dropping one yellow handle closely<br>
nearby the adjacent yellow handle<br>
Handles can be made visible/hidden by shift+leftclicking the morph. This way it is possible<br>
to quickly show handles, adjust vertices and then again hide handles.<br>
- making closed polygon open, i.e. converting it to a curve (and vice versa)<br>
- toggle smoothed/segmented line/outline<br>
- set up custom dashing (for line, curves or borders of closed polygons<br>
- set up custom arrow-heads (for lines resp. curves)<br>
<br>
------------------------------------------------------------------------------------------<br>
Implementation notes:<br>
<br>
This class combines the old Polygon and Curve classes.<br>
<br>
The 1-bit fillForm to make display and containment tests reasonably fast. However, this functionality is in the process of being supplanted by balloon capabilities, which should eventually provide anti-aliasing as well.<br>
<br>
wiz 7/18/2004 21:26<br>
s have made some changes to this class to<br>
<br>
1) correct some bugs associated with one vertex polygons.<br>
<br>
2) prepare for some enhancements with new curves.<br>
<br>
3) add shaping items to menu.!<br>
<br>
Item was changed:<br>
----- Method: PolygonMorph>>addCustomMenuItems:hand: (in category 'menu') -----<br>
addCustomMenuItems: aMenu hand: aHandMorph<br>
"Add morph-specific items to the given menu which was invoked by the given hand. This method provides is invoked both from the halo-menu and from the control-menu regimes."<br>
<br>
super addCustomMenuItems: aMenu hand: aHandMorph.<br>
aMenu addUpdating: #handlesShowingPhrase target: self action: #showOrHideHandles.<br>
vertices size > 2 ifTrue:<br>
[aMenu addUpdating: #openOrClosePhrase target: self action: #makeOpenOrClosed].<br>
<br>
aMenu addUpdating: #smoothPhrase target: self action: #toggleSmoothing.<br>
+ aMenu addUpdating: #snapToOtherPolygonPhrase target: self action: #toggleSnapToOtherPolygons.<br>
aMenu addLine.<br>
aMenu add: 'specify dashed line' translated action: #specifyDashedLine.<br>
<br>
self isOpen ifTrue:<br>
[aMenu addLine.<br>
aMenu addWithLabel: '---' enablement: [self isOpen and: [arrows ~~ #none]] action: #makeNoArrows.<br>
aMenu addWithLabel: '-->' enablement: [self isOpen and: [arrows ~~ #forward]] action: #makeForwardArrow.<br>
aMenu addWithLabel: '<--' enablement: [self isOpen and: [arrows ~~ #back]] action: #makeBackArrow.<br>
aMenu addWithLabel: '<->' enablement: [self isOpen and: [arrows ~~ #both]] action: #makeBothArrows.<br>
aMenu add: 'customize arrows' translated action: #customizeArrows:.<br>
(self hasProperty: #arrowSpec)<br>
ifTrue: [aMenu add: 'standard arrows' translated action: #standardArrows]].!<br>
<br>
Item was changed:<br>
----- Method: PolygonMorph>>dropVertex:event:fromHandle: (in category 'editing') -----<br>
+ dropVertex: ix event: evt fromHandle: handle <br>
+ "Leave vertex in new position. If dropped ontop another vertex delete<br>
+ this one.<br>
- dropVertex: ix event: evt fromHandle: handle<br>
- "Leave vertex in new position. If dropped ontop another vertex delete this one.<br>
Check for too few vertices before deleting. The alternative <br>
+ is not pretty -wiz"<br>
+ | p nearestOwner distance |<br>
- is not pretty -wiz"<br>
- | p |<br>
p := vertices at: ix.<br>
+ distance := (3 * RealEstateAgent scaleFactor). <br>
+ "snap the dropped vertex to a vertex of another PolygonMorph if it is in near proximity"<br>
+ self isSnappingToOtherPolygons<br>
+ ifTrue: [nearestOwner := self ownerThatIsA: PasteUpMorph.<br>
+ nearestOwner submorphs<br>
+ do: [:each | ((each respondsTo: #vertices)<br>
+ and: [each ~= self])<br>
+ ifTrue: [each vertices<br>
+ do: [:otherMorphsVertex | (otherMorphsVertex dist: p)<br>
+ < distance<br>
+ ifTrue: [vertices at: ix put: otherMorphsVertex]]]]].<br>
(vertices size >= 2<br>
and: ["check for too few vertices before deleting. The alternative
<br>
is not pretty -wiz"<br>
((vertices atWrap: ix - 1)<br>
dist: p)<br>
+ < distance<br>
- < 3<br>
or: [((vertices atWrap: ix + 1)<br>
dist: p)<br>
+ < distance]])<br>
- < 3]])<br>
ifTrue: ["Drag a vertex onto its neighbor means delete"<br>
+ self deleteVertexAt: ix].<br>
- self deleteVertexAt: ix .].<br>
evt shiftPressed<br>
ifTrue: [self removeHandles]<br>
ifFalse: [self addHandles<br>
"remove then add to recreate"]!<br>
<br>
Item was changed:<br>
----- Method: PolygonMorph>>initialize (in category 'initialization') -----<br>
initialize<br>
"initialize the state of the receiver"<br>
super initialize.<br>
""<br>
vertices := Array<br>
with: 5 @ 0<br>
with: 20 @ 10<br>
with: 0 @ 20.<br>
closed := true.<br>
smoothCurve := false.<br>
arrows := #none.<br>
+ snapToOtherPolygons := false.<br>
self computeBounds!<br>
<br>
Item was added:<br>
+ ----- Method: PolygonMorph>>isSnappingToOtherPolygons (in category 'access') -----<br>
+ isSnappingToOtherPolygons<br>
+ ^snapToOtherPolygons ifNil:[ snapToOtherPolygons := false].<br>
+ !<br>
<br>
Item was added:<br>
+ ----- Method: PolygonMorph>>snapToOtherPolygonPhrase (in category 'menu') -----<br>
+ snapToOtherPolygonPhrase<br>
+ "Answer a string characterizing whether my vertices should snap to another polygons vertices."<br>
+ <br>
+ ^ (self isSnappingToOtherPolygons ifTrue: ['<yes>'] ifFalse: ['<no>']), 'snap to other polygons' translated !<br>
<br>
Item was added:<br>
+ ----- Method: PolygonMorph>>toggleSnapToOtherPolygons (in category 'menu') -----<br>
+ toggleSnapToOtherPolygons<br>
+ ^snapToOtherPolygons := snapToOtherPolygons not!<br>
<br>
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