Diya-API/Diya/Diya2DPrimShape.class.st

Class {
	#name : #Diya2DPrimShape,
	#superclass : #Diya2DNode,
	#instVars : [
		'texture',
		'type',
		'border',
		'bcolor'
	],
	#category : #'Diya-Graphics'
}

{ #category : #accessing }
Diya2DPrimShape >> borderColor: c [
	bcolor := c
]

{ #category : #accessing }
Diya2DPrimShape >> borderWidth: w [
	border := w
]

{ #category : #initialization }
Diya2DPrimShape >> draw [
	vbuffer ifNil: [ ^self ].
	"configure vao vbo for texture QUAD"
	self texture ifNotNil: [
		self texture setup.
		context texture0 setImage2D: self texture.
	context texture0 active. 	
	].
	context vao enableAttribute: 0.
	OpenGLVertexArray  vertexAttributePointerIndex: 0 size:4 type: GL_FLOAT normalized: GL_FALSE stride: 16 pointer: nil .
	context vbo data: GL_ARRAY_BUFFER data: vbuffer usage: GL_STATIC_DRAW.
	OpenGL drawArrays: type first:0  count:((vbuffer size )>> 2 ).
	"reset value"
	self texture ifNotNil: [self texture drop.].
	border > 0 ifTrue: [ self drawBorder ].
	context vao disableAttribute: 0.
]

{ #category : #initialization }
Diya2DPrimShape >> drawBorder [
	"Diya2DShader uniqueInstance use."
	color = bcolor ifFalse:[
		shader setUniform: #u_color value: bcolor asGL4FArray;
		setUniform: #u_texture_type value: 0.
	].
	OpenGL
		lineWidth: border.
	self drawLines.
	OpenGL lineWidth: 1.0.
]

{ #category : #initialization }
Diya2DPrimShape >> drawLineAt: offset [
	OpenGL drawArrays: GL_LINES first:(offset)  count:2.
]

{ #category : #initialization }
Diya2DPrimShape >> drawLines [
	self subclassResponsibility 
]

{ #category : #initialization }
Diya2DPrimShape >> initialize [
	super initialize.
	texture := nil.
	children := nil.
	type := GL_TRIANGLES.
	border := 0.
	bcolor := Color white 
]

{ #category : #initialization }
Diya2DPrimShape >> setUpShader [
	super setUpShader
	texture ifNotNil:[
		self shader
			setUniform: #u_texture_type value: texture format.
	].
]

{ #category : #accessing }
Diya2DPrimShape >> texture [
	^ texture
]

{ #category : #accessing }
Diya2DPrimShape >> texture: anObject [
	texture := anObject
]