diff --git a/Diya/Array2D.extension.st b/Diya/Array2D.extension.st
deleted file mode 100644
index 3459e56..0000000
--- a/Diya/Array2D.extension.st
+++ /dev/null
@@ -1,41 +0,0 @@
-Extension { #name : #Array2D }
-
-{ #category : #'*Diya' }
-Array2D >> asGLBuffer [
-	|buffer i|
-	i := 1.
-	buffer := FFIExternalArray externalNewType: #float size: self size.
-	self asArray do:[:e|
-		buffer at:i put:e.
-		i := i+1
-	].
-	buffer autoRelease.
-	^buffer
-]
-
-{ #category : #'*Diya' }
-Array2D class >> rotationMatrix2D: rotation [
-	^Array2D rows: 3 columns: 3 contents:{
-			rotation cos. (rotation sin) negated. 0.0.
-			rotation sin. rotation cos. 0.0.
-			0.0. 0.0. 1.0
-		}
-]
-
-{ #category : #'*Diya' }
-Array2D class >> scaleMatrix2D: scale [
-	^Array2D rows: 3 columns: 3 contents:{
-			scale x. 0.0. 0.0.
-			0.0. scale y. 0.0.
-			0.0. 0.0. 1.0
-		}
-]
-
-{ #category : #'*Diya' }
-Array2D class >> translateMatrix2D: translation [
-	^Array2D rows: 3 columns: 3 contents: {
-			1.0. 0.0. translation x.
-			0.0. 1.0. translation y.
-			0.0. 0.0. 1.0
-		}
-]
diff --git a/Diya/Diya2DNode.class.st b/Diya/Diya2DNode.class.st
index 7e001ca..d9b3026 100644
--- a/Diya/Diya2DNode.class.st
+++ b/Diya/Diya2DNode.class.st
@@ -40,7 +40,7 @@ Diya2DNode >> initialize [
 	translation := 0@0.
 	scale := 1@1.
 	rotation := 0.
-	tf := Array2D identity: 3.
+	tf := MatrixTransform2x3 identity .
 	shader := Diya2DShader uniqueInstance.
 	vbuffer := nil.
 ]
@@ -75,18 +75,15 @@ Diya2DNode >> recFromBuffer [
 
 { #category : #accessing }
 Diya2DNode >> updateTF [
-	tf := Array2D identity:3.
+	tf := MatrixTransform2x3 identity.
 	"translation"
-	translation = (0@0) ifFalse:[
-		tf := tf +* (Array2D translateMatrix2D: translation)].
+	tf setOffset: translation.
 	"rotation"
-	rotation = 0 ifFalse:[
-		tf := tf +* (Array2D rotationMatrix2D: rotation )].
+	rotation = 0 ifFalse:[tf setAngle: rotation ].
 	"scale"
-	scale = (1@1) ifFalse:[
-		tf := tf +* (Array2D scaleMatrix2D: scale)].
+	tf setScale: scale.
 	self parent ifNil: [ ^self ].
-	self parent isRoot ifFalse: [tf := self parent tf +* tf ].
+	self parent isRoot ifFalse: [tf := self parent tf composedWithLocal:  tf ].
 	children ifNotNil: [children do:[:c| c updateTF ]].
 	
 ]
diff --git a/Diya/DiyaExampleApp.class.st b/Diya/DiyaExampleApp.class.st
index 9a3392e..b6afc7e 100644
--- a/Diya/DiyaExampleApp.class.st
+++ b/Diya/DiyaExampleApp.class.st
@@ -67,8 +67,8 @@ DiyaExampleApp >> main [
 
 { #category : #accessing }
 DiyaExampleApp >> setup [
-	|node node1 img ell label icon button|
-
+	|node node1 img ell label icon button texture|
+	texture := DiyaImageTex new.
 	"DiyaRendererContext uniqueInstance assets
 		addAsset:
 			((Form fromDisplay: ( Rectangle origin: 0@0 corner: 300@300 )) asDiyaTexture: 'display')."
@@ -79,8 +79,8 @@ DiyaExampleApp >> setup [
 	label icon: 16rF254.
 	
 	node1 := root addNode: (DiyaRectangle size:100@150 shader: DiyaExampleShader uniqueInstance) at: 300 @ 40.
-	"node1 rotation: (Float pi / 8.0)."
-	node1 scale: 1.2@1.2.
+	node1 rotation: 45.
+	node1 scale: 2.0@2.0.
 	node1 on: #(mousebuttondown fingerdown) do:[:e|
 		label txt: 'Mouse ', (node1 local: e mapped worldPosition) asIntegerPoint asString].
 	
@@ -93,7 +93,7 @@ DiyaExampleApp >> setup [
 		p := e mapped worldPosition.
 		label txt: 'Mouse ', p asIntegerPoint asString.
 		DiyaRendererContext uniqueInstance assets
-			addAsset:(DiyaImageTex fromDisplay: (Rectangle origin: ((p x - 100) @ (p y - 100)) extent: 200@200 ) as: 'capture').
+			addAsset:(texture fromDisplay: (Rectangle origin: ((p x - 100) @ (p y - 100)) extent: 200@200 ) as: 'capture').
 		img textureNamed: 'capture'.
 		
 	].
@@ -111,7 +111,7 @@ DiyaExampleApp >> setup [
 	node styleName: #line_view.
 		
 	ell := root addNode: (DiyaEllipse rx:100  ry: 70) at: 100@300.
-	ell rotation: Float pi / 6.0.
+	ell rotation: 30.
 	ell styleName: #ell_view.
 	"node rotation: Float pi / 2.0."
 	ell textureNamed:'mrsang.png'.
diff --git a/Diya/DiyaNode.class.st b/Diya/DiyaNode.class.st
index 5c3c6e5..770ade9 100644
--- a/Diya/DiyaNode.class.st
+++ b/Diya/DiyaNode.class.st
@@ -116,7 +116,7 @@ DiyaNode >> initialize [
 	styleName := nil.
 	style := nil.
 	root := nil.
-	id := Random new nextInt: 1e6
+	id := self className,'#',(Random new nextInt: 1e6) asString.
 ]
 
 { #category : #accessing }
diff --git a/Diya/Point.extension.st b/Diya/Point.extension.st
index e378a73..c15bc71 100644
--- a/Diya/Point.extension.st
+++ b/Diya/Point.extension.st
@@ -2,7 +2,7 @@ Extension { #name : #Point }
 
 { #category : #'*Diya' }
 Point >> applyTf: tf [
-	^(tf +* (self asArray3F)) asPoint
+	^ tf localPointToGlobal: self
 ]
 
 { #category : #'*Diya' }
@@ -14,18 +14,3 @@ Point >> asArray3F [
 Point >> asArray3F: z [
 	^ { self x. self y. z }
 ]
-
-{ #category : #'*Diya' }
-Point >> asGLCoord [
-	|res|
-	res := DiyaRendererContext uniqueInstance resolution.
-	^(self / ( res / 2.0)) + (-1.0@ -1.0).
-]
-
-{ #category : #'*Diya' }
-Point >> glNormalise [
-	|res p|
-	res := DiyaRendererContext uniqueInstance resolution.
-	p := self / (res/ 2).
-	^ (p x asFloat) @ (p y asFloat)
-]
diff --git a/Diya/Rectangle.extension.st b/Diya/Rectangle.extension.st
index 81563d8..37ac68b 100644
--- a/Diya/Rectangle.extension.st
+++ b/Diya/Rectangle.extension.st
@@ -2,7 +2,5 @@ Extension { #name : #Rectangle }
 
 { #category : #'*Diya' }
 Rectangle >> applyTf: tf [
-	^ Rectangle
-		origin: (self origin applyTf: tf)
-		corner: (self corner applyTf: tf)
+	^ tf localBoundsToGlobal: self 
 ]