mirror of
https://github.com/lxsang/Diya-API.git
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49 lines
1.0 KiB
Smalltalk
49 lines
1.0 KiB
Smalltalk
Class {
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#name : #Diya2DNode,
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#superclass : #DiyaNode,
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#category : #'Diya-Graphics'
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}
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{ #category : #'as yet unclassified' }
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Diya2DNode >> gltf: points [
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^ points collect: [ :point | |coord|
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coord := self tf +* { point x. point y. 1.0 }.
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coord at:3 put: 0.0.
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coord
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]
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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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]
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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 ifTrue: [ ^tf ].
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tf := self parent tf +* tf
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]
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