I represent all per vertex information used in Balloon 3D primitive operations. I store either 32bit floats or integers depending on what is requested.

C representation:

typedef struct B3DPrimitiveVertex {
float position[3];
float normal[3];
float texCoord[2];
float rasterPos[4];
int pixelValue32;
int clipFlags;
int windowPos[2];
} B3DPrimitiveVertex;

	private
	privateReplaceFrom:to:with:startingAt:

	rasterizer-support
	aValue alphaValue bValue blueValue gValue greenValue rValue redValue texCoordS texCoordT

	testing
	sortsBefore:

	transform-support
	normalX normalX: normalY normalY: normalZ normalZ: positionX positionX: positionY positionY: positionZ positionZ: rasterPosW rasterPosW: rasterPosX rasterPosX: rasterPosY rasterPosY: rasterPosZ rasterPosZ: windowPosX windowPosX: windowPosY windowPosY:

	accessing	top
	b3dColor
	b3dColor:
	clipFlags
	clipFlags:
	color
	color:
	floatAt:
	floatAt:put:
	integerAt: Return the integer at the given index
	integerAt:put: Store the integer at the given index
	normal
	normal:
	pixelValue32
	pixelValue32:
	position
	position:
	rasterPos
	rasterPos:
	texCoords
	texCoords:
	windowPos
	windowPos:
	wordAt:
	wordAt:put:

	private	top
	privateReplaceFrom:to:with:startingAt:

	rasterizer-support	top
	aValue
	alphaValue
	bValue
	blueValue
	gValue
	greenValue
	rValue
	redValue
	texCoordS
	texCoordT

	testing	top
	sortsBefore: Return true if the receiver should be sorted before the given primitive vertex. Support for rasterizer simulation. Only valid if window position has been computed before.

	transform-support	top
	normalX
	normalX:
	normalY
	normalY:
	normalZ
	normalZ:
	positionX
	positionX:
	positionY
	positionY:
	positionZ
	positionZ:
	rasterPosW
	rasterPosW:
	rasterPosX
	rasterPosX:
	rasterPosY
	rasterPosY:
	rasterPosZ
	rasterPosZ:
	windowPosX
	windowPosX:
	windowPosY
	windowPosY:

	instance creation	top
	new Answer a new instance of the receiver (which is a class) with no indexable variables. Fail if the class is indexable.