mirror of
https://github.com/lxsang/Diya-API.git
synced 2024-12-27 03:48:21 +01:00
105 lines
2.1 KiB
Smalltalk
105 lines
2.1 KiB
Smalltalk
Class {
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#name : #Diya2DNode,
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#superclass : #DiyaNode,
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#instVars : [
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'vbuffer'
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],
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#category : #'Diya-Graphics'
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}
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{ #category : #accessing }
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Diya2DNode >> boundingBox [
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|rec|
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children ifEmpty: [ ^ Rectangle origin: 0@0 corner: 0@0 ].
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rec := children first boundingBox.
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children do:[:c|
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rec = c ifFalse:[
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rec := rec merge: c boundingBox]
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].
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^rec
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]
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{ #category : #accessing }
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Diya2DNode >> draw [
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]
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{ #category : #accessing }
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Diya2DNode >> extent [
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^ self boundingBox extent
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]
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{ #category : #accessing }
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Diya2DNode >> height [
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^ self extent y
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]
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{ #category : #initialization }
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Diya2DNode >> initialize [
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super initialize.
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translation := 0@0.
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scale := 1@1.
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rotation := 0.
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tf := MatrixTransform2x3 identity .
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shader := Diya2DShader uniqueInstance.
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vbuffer := nil.
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]
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{ #category : #accessing }
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Diya2DNode >> inner: aPoint [
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^ self boundingBox containsPoint: (self local: aPoint)
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]
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{ #category : #accessing }
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Diya2DNode >> local: aPoint [
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^ self tf globalPointToLocal: aPoint
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]
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{ #category : #accessing }
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Diya2DNode >> recFromBuffer [
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|maxX maxY minX minY x y|
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maxX := minX := vbuffer at: 1.
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maxY := minY := vbuffer at: 2.
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1 to: vbuffer size by: 4 do: [ :i|
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x := vbuffer at: i.
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y := vbuffer at: i + 1.
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maxX := maxX max: x.
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maxY := maxY max: y.
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minX := minX min: x.
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minY := minY min: y.
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].
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^ Rectangle origin: minX@minY corner: maxX @ maxY
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]
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{ #category : #accessing }
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Diya2DNode >> updateTF [
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tf := MatrixTransform2x3 identity.
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"translation"
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tf setOffset: translation + pivot.
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"rotation"
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rotation = 0 ifFalse:[tf setAngle: rotation ].
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"translate back to pivot"
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pivot isZero ifFalse:[
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tf := tf composedWithLocal:
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(MatrixTransform2x3 identity
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setOffset: pivot negated;
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yourself)
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].
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scale isZero ifFalse: [
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tf := tf composedWithLocal:
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(MatrixTransform2x3 identity
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setScale: scale;
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yourself)
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].
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self parent ifNil: [ ^self ].
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self parent isRoot ifFalse: [tf := self parent tf composedWithLocal: tf ].
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children ifNotNil: [children do:[:c| c updateTF ]].
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]
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{ #category : #accessing }
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Diya2DNode >> width [
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^ self extent x
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]
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