mirror of
https://github.com/lxsang/Diya-API.git
synced 2024-12-27 20:08:22 +01:00
102 lines
1.9 KiB
Smalltalk
102 lines
1.9 KiB
Smalltalk
Class {
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#name : #Diya2DNode,
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#superclass : #DiyaNode,
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#instVars : [
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'color',
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'vbuffer',
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'bbox'
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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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^ bbox
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]
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{ #category : #accessing }
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Diya2DNode >> color [
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^ color
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]
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{ #category : #accessing }
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Diya2DNode >> color: anObject [
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color := anObject
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]
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{ #category : #accessing }
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Diya2DNode >> extent [
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^ bbox 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 := 1.0@1.0.
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rotation := 0.0.
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tf := Array2D identity: 3.
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shader := Diya2DShader uniqueInstance.
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color := Color white.
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vbuffer := nil.
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]
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{ #category : #'as yet unclassified' }
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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 : #initialization }
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Diya2DNode >> setUpShader [
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super setUpShader.
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shader setUniform: #u_color value: self color asGL4FArray.
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]
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{ #category : #accessing }
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Diya2DNode >> updateTF [
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tf := Array2D identity:3.
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"translation"
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tf := tf +* (Array2D rows: 3 columns: 3 contents: {
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1.0. 0.0. translation x.
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0.0. 1.0. translation y.
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0.0. 0.0. 1.0
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}).
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"rotation"
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tf := tf +* (Array2D rows: 3 columns: 3 contents:{
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rotation cos. (rotation sin) negated. 0.0.
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rotation sin. rotation cos. 0.0.
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0.0. 0.0. 1.0
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}).
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"scale"
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tf := tf +* (Array2D rows: 3 columns: 3 contents:{
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scale x. 0.0. 0.0.
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0.0. scale y. 0.0.
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0.0. 0.0. 1.0
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}).
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self parent isRoot ifFalse: [ tf := self parent tf +* tf ].
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children ifNotNil: [
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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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