com.io7m.r2.core

Interface R2InstanceBillboardedType

All Superinterfaces:

R2InstanceType

All Known Subinterfaces:

R2InstanceBillboardedDynamicType

All Known Implementing Classes:

R2InstanceBillboardedDynamic

public interface R2InstanceBillboardedType
extends R2InstanceType

The type of billboarded instances.

A billboarded instance consists of a set of one or more vertex buffers containing a list of world-space positions. At render-time, the positions are transformed into quadrilaterals (pairs of triangles) that are oriented to face the viewer at all times.

The primary use case for billboarded instances is rendering particle systems.

Method Summary

Modifier and Type	Method and Description
com.io7m.jcanephora.core.JCGLArrayObjectType	arrayObject()
int	enabledCount()
void	update(com.io7m.jcanephora.core.api.JCGLInterfaceGL33Type g, R2TransformContextType context) Update any data required for rendering on the GPU.

Methods inherited from interface com.io7m.r2.core.R2InstanceType

instanceID

Method Detail

arrayObject

com.io7m.jcanephora.core.JCGLArrayObjectType arrayObject()

Returns:

The instance array object

update

void update(com.io7m.jcanephora.core.api.JCGLInterfaceGL33Type g,
            R2TransformContextType context)

Update any data required for rendering on the GPU.

Parameters:

context - The transform context

g - An OpenGL interface

enabledCount

int enabledCount()

Returns:

The number of instances currently present in the set