sv::Drawable Class Reference

Fundamental drawable unit. More...

#include <drawable.hpp>

Public Types
typedef std::shared_ptr< Drawable >	Ptr

Public Member Functions
const GeometryResource::Ptr &	Geometry ()
const MaterialResource::Ptr &	Material ()
virtual void	SetMaterial (const MaterialResource::Ptr &material)
virtual bool	PreDraw ()
	Called by the render engine just before rendering the geometry referenced by this object. More...
virtual void	PostDraw ()
	Called by the render engine just after rendering the geometry referenced by this object.
virtual const AxisAlignedBox &	BoundingBox ()
	Called by the render engine to determine the axis-aligned bounding box of the Drawable, in the Drawable's own coordinate frame.

Static Public Member Functions
static Ptr	Create (const GeometryResource::Ptr &geometry, const MaterialResource::Ptr &material)

Protected Member Functions
	Drawable (const GeometryResource::Ptr &geometry, const MaterialResource::Ptr &material)
void	BoundingBoxChanged ()
	Call this when the bounding box changes.

Friends
class	DrawNode
class	GeometryResource

Detailed Description

Fundamental drawable unit.

Member Function Documentation

virtual bool sv::Drawable::PreDraw ( )

inlinevirtual

Called by the render engine just before rendering the geometry referenced by this object.

At the time this method is called, the material properties have been loaded into the OpenGL state machine. Specifically, the shader program is bound, all shader uniform variables loaded, and OpenGL behavior adjusted (e.g., depth test, line width, etc.) according to the material settings.

This method provides an opportunity for implementing custom rendering behavior just before the render engine renders the geometry, or to override the render engine completely. To do this, create a subclass of Drawable, override the PreDraw() and/or PostDraw() methods, and add your custom Drawable to a DrawNode instead of a standard Drawable.

If this method returns true (the default), then the render engine draws the referenced geometry. If it returns false, then geometry rendering is skipped.

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The documentation for this class was generated from the following file:

• drawable.hpp