Ykkrosh
d24c93237c
Rejig CModel to support non-mesh-based props. Avoid redundant recomputation for non-moving CRenderableObjects. This was SVN commit r9055.
130 lines
3.7 KiB
C++
130 lines
3.7 KiB
C++
/* Copyright (C) 2009 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Base class for renderable objects
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*/
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#ifndef INCLUDED_RENDERABLEOBJECT
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#define INCLUDED_RENDERABLEOBJECT
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#include "maths/Bound.h"
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#include "maths/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_COLOR (1<<4)
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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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int 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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NONCOPYABLE(CRenderableObject);
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public:
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// constructor
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CRenderableObject() : m_RenderData(0), m_BoundsValid(false) {
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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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if (m_Transform == transform)
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return;
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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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// need to rebuild world space bounds
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InvalidateBounds();
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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() {
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if (! m_BoundsValid) {
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CalcBounds();
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m_BoundsValid = true;
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}
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return m_Bounds;
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}
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void InvalidateBounds() { m_BoundsValid = false; }
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// Set the object renderdata and free previous renderdata, if any.
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void SetRenderData(CRenderData* renderdata) {
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delete m_RenderData;
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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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private:
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// remembers whether m_bounds needs to be recalculated
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bool m_BoundsValid;
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};
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#endif
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