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275 lines
7.0 KiB
C
275 lines
7.0 KiB
C
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// Copyright (C) 2002-2012 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#pragma once
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#include "irrArray.h"
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#include "IMeshBuffer.h"
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namespace irr
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{
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namespace scene
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{
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//! Template implementation of the IMeshBuffer interface
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template <class T>
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class CMeshBuffer : public IMeshBuffer
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{
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public:
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//! Default constructor for empty meshbuffer
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CMeshBuffer() :
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ChangedID_Vertex(1), ChangedID_Index(1), MappingHint_Vertex(EHM_NEVER), MappingHint_Index(EHM_NEVER), HWBuffer(NULL), PrimitiveType(EPT_TRIANGLES)
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{
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#ifdef _DEBUG
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setDebugName("CMeshBuffer");
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#endif
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}
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//! Get material of this meshbuffer
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/** \return Material of this buffer */
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const video::SMaterial &getMaterial() const override
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{
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return Material;
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}
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//! Get material of this meshbuffer
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/** \return Material of this buffer */
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video::SMaterial &getMaterial() override
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{
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return Material;
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}
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//! Get pointer to vertices
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/** \return Pointer to vertices. */
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const void *getVertices() const override
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{
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return Vertices.const_pointer();
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}
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//! Get pointer to vertices
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/** \return Pointer to vertices. */
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void *getVertices() override
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{
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return Vertices.pointer();
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}
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//! Get number of vertices
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/** \return Number of vertices. */
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u32 getVertexCount() const override
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{
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return Vertices.size();
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}
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//! Get type of index data which is stored in this meshbuffer.
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/** \return Index type of this buffer. */
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video::E_INDEX_TYPE getIndexType() const override
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{
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return video::EIT_16BIT;
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}
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//! Get pointer to indices
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/** \return Pointer to indices. */
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const u16 *getIndices() const override
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{
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return Indices.const_pointer();
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}
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//! Get pointer to indices
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/** \return Pointer to indices. */
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u16 *getIndices() override
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{
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return Indices.pointer();
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}
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//! Get number of indices
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/** \return Number of indices. */
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u32 getIndexCount() const override
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{
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return Indices.size();
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}
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//! Get the axis aligned bounding box
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/** \return Axis aligned bounding box of this buffer. */
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const core::aabbox3d<f32> &getBoundingBox() const override
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{
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return BoundingBox;
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}
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//! Set the axis aligned bounding box
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/** \param box New axis aligned bounding box for this buffer. */
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//! set user axis aligned bounding box
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void setBoundingBox(const core::aabbox3df &box) override
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{
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BoundingBox = box;
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}
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//! Recalculate the bounding box.
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/** should be called if the mesh changed. */
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void recalculateBoundingBox() override
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{
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if (!Vertices.empty()) {
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BoundingBox.reset(Vertices[0].Pos);
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const irr::u32 vsize = Vertices.size();
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for (u32 i = 1; i < vsize; ++i)
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BoundingBox.addInternalPoint(Vertices[i].Pos);
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} else
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BoundingBox.reset(0, 0, 0);
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}
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//! Get type of vertex data stored in this buffer.
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/** \return Type of vertex data. */
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video::E_VERTEX_TYPE getVertexType() const override
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{
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return T::getType();
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}
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//! returns position of vertex i
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const core::vector3df &getPosition(u32 i) const override
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{
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return Vertices[i].Pos;
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}
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//! returns position of vertex i
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core::vector3df &getPosition(u32 i) override
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{
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return Vertices[i].Pos;
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}
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//! returns normal of vertex i
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const core::vector3df &getNormal(u32 i) const override
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{
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return Vertices[i].Normal;
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}
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//! returns normal of vertex i
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core::vector3df &getNormal(u32 i) override
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{
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return Vertices[i].Normal;
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}
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//! returns texture coord of vertex i
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const core::vector2df &getTCoords(u32 i) const override
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{
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return Vertices[i].TCoords;
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}
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//! returns texture coord of vertex i
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core::vector2df &getTCoords(u32 i) override
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{
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return Vertices[i].TCoords;
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}
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//! Append the vertices and indices to the current buffer
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/** Only works for compatible types, i.e. either the same type
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or the main buffer is of standard type. Otherwise, behavior is
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undefined.
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*/
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void append(const void *const vertices, u32 numVertices, const u16 *const indices, u32 numIndices) override
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{
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if (vertices == getVertices())
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return;
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const u32 vertexCount = getVertexCount();
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u32 i;
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Vertices.reallocate(vertexCount + numVertices);
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for (i = 0; i < numVertices; ++i) {
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Vertices.push_back(static_cast<const T *>(vertices)[i]);
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BoundingBox.addInternalPoint(static_cast<const T *>(vertices)[i].Pos);
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}
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Indices.reallocate(getIndexCount() + numIndices);
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for (i = 0; i < numIndices; ++i) {
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Indices.push_back(indices[i] + vertexCount);
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}
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}
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//! get the current hardware mapping hint
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E_HARDWARE_MAPPING getHardwareMappingHint_Vertex() const override
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{
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return MappingHint_Vertex;
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}
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//! get the current hardware mapping hint
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E_HARDWARE_MAPPING getHardwareMappingHint_Index() const override
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{
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return MappingHint_Index;
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}
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//! set the hardware mapping hint, for driver
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void setHardwareMappingHint(E_HARDWARE_MAPPING NewMappingHint, E_BUFFER_TYPE Buffer = EBT_VERTEX_AND_INDEX) override
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{
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if (Buffer == EBT_VERTEX_AND_INDEX || Buffer == EBT_VERTEX)
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MappingHint_Vertex = NewMappingHint;
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if (Buffer == EBT_VERTEX_AND_INDEX || Buffer == EBT_INDEX)
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MappingHint_Index = NewMappingHint;
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}
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//! Describe what kind of primitive geometry is used by the meshbuffer
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void setPrimitiveType(E_PRIMITIVE_TYPE type) override
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{
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PrimitiveType = type;
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}
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//! Get the kind of primitive geometry which is used by the meshbuffer
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E_PRIMITIVE_TYPE getPrimitiveType() const override
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{
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return PrimitiveType;
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}
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//! flags the mesh as changed, reloads hardware buffers
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void setDirty(E_BUFFER_TYPE Buffer = EBT_VERTEX_AND_INDEX) override
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{
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if (Buffer == EBT_VERTEX_AND_INDEX || Buffer == EBT_VERTEX)
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++ChangedID_Vertex;
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if (Buffer == EBT_VERTEX_AND_INDEX || Buffer == EBT_INDEX)
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++ChangedID_Index;
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}
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//! Get the currently used ID for identification of changes.
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/** This shouldn't be used for anything outside the VideoDriver. */
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u32 getChangedID_Vertex() const override { return ChangedID_Vertex; }
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//! Get the currently used ID for identification of changes.
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/** This shouldn't be used for anything outside the VideoDriver. */
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u32 getChangedID_Index() const override { return ChangedID_Index; }
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void setHWBuffer(void *ptr) const override
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{
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HWBuffer = ptr;
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}
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void *getHWBuffer() const override
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{
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return HWBuffer;
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}
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u32 ChangedID_Vertex;
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u32 ChangedID_Index;
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//! hardware mapping hint
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E_HARDWARE_MAPPING MappingHint_Vertex;
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E_HARDWARE_MAPPING MappingHint_Index;
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mutable void *HWBuffer;
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//! Material for this meshbuffer.
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video::SMaterial Material;
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//! Vertices of this buffer
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core::array<T> Vertices;
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//! Indices into the vertices of this buffer.
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core::array<u16> Indices;
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//! Bounding box of this meshbuffer.
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core::aabbox3d<f32> BoundingBox;
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//! Primitive type used for rendering (triangles, lines, ...)
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E_PRIMITIVE_TYPE PrimitiveType;
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};
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//! Standard meshbuffer
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typedef CMeshBuffer<video::S3DVertex> SMeshBuffer;
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//! Meshbuffer with two texture coords per vertex, e.g. for lightmaps
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typedef CMeshBuffer<video::S3DVertex2TCoords> SMeshBufferLightMap;
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//! Meshbuffer with vertices having tangents stored, e.g. for normal mapping
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typedef CMeshBuffer<video::S3DVertexTangents> SMeshBufferTangents;
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} // end namespace scene
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} // end namespace irr
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