105 lines
3.1 KiB
C++
Executable File
105 lines
3.1 KiB
C++
Executable File
///////////////////////////////////////////////////////////////////////////////
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//
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// Name: RenderableObject.h
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// Author: Rich Cross
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// Contact: rich@wildfiregames.com
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//
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _RENDERABLEOBJECT_H
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#define _RENDERABLEOBJECT_H
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#include <assert.h>
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#include "res/res.h"
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#include "Bound.h"
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#include "Matrix3D.h"
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// dirty flags - used as notification to the renderer that some bit of data
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// need updating
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#define RENDERDATA_UPDATE_VERTICES (1<<1)
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#define RENDERDATA_UPDATE_INDICES (1<<2)
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#define RENDERDATA_UPDATE_TRANSFORM (1<<3)
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///////////////////////////////////////////////////////////////////////////////
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// CRenderData: base class of all the renderer's renderdata classes - the
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// derived class stores necessary information for rendering an object of a
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// particular type
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class CRenderData
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{
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public:
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CRenderData() : m_UpdateFlags(0) {}
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virtual ~CRenderData() {}
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u32 m_UpdateFlags;
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};
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///////////////////////////////////////////////////////////////////////////////
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// CRenderableObject: base class of all renderable objects - patches, models,
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// sprites, etc; stores position and bound information, and a pointer to
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// some renderdata necessary for the renderer to actually render it
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class CRenderableObject
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{
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public:
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// constructor
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CRenderableObject() : m_RenderData(0) {
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m_Transform.SetIdentity();
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}
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// destructor
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virtual ~CRenderableObject() { delete m_RenderData; }
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// set object transform
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virtual void SetTransform(const CMatrix3D& transform) {
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// store transform, calculate inverse
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m_Transform=transform;
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m_Transform.GetInverse(m_InvTransform);
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// normal recalculation likely required on transform change; flag it
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SetDirty(RENDERDATA_UPDATE_VERTICES);
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// rebuild world space bounds
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CalcBounds();
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}
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// get object to world space transform
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const CMatrix3D& GetTransform() const { return m_Transform; }
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// get world to object space transform
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const CMatrix3D& GetInvTransform() const { return m_InvTransform; }
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// mark some part of the renderdata as dirty, and requiring
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// an update on next render
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void SetDirty(u32 dirtyflags) {
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if (m_RenderData) m_RenderData->m_UpdateFlags|=dirtyflags;
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}
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// calculate (and store in m_Bounds) the world space bounds of this object
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// - must be implemented by all concrete subclasses
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virtual void CalcBounds() = 0;
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// return world space bounds of this object
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const CBound& GetBounds() const { return m_Bounds; }
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// set the object renderdata
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// TODO,RC 10/04/04 - need to delete existing renderdata here, or can we
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// assume the renderer won't set renderdata when an object already has it?
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// - just assert we've no renderdata at the minute
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void SetRenderData(CRenderData* renderdata) {
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assert(m_RenderData==0);
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m_RenderData=renderdata;
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}
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// return object renderdata - can be null if renderer hasn't yet
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// created the renderdata
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CRenderData* GetRenderData() { return m_RenderData; }
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protected:
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// object bounds
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CBound m_Bounds;
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// local->world space transform
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CMatrix3D m_Transform;
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// world->local space transform
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CMatrix3D m_InvTransform;
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// object renderdata
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CRenderData* m_RenderData;
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};
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#endif
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