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https://github.com/minetest/minetest.git
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401 lines
9.9 KiB
C++
401 lines
9.9 KiB
C++
// 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 "IMeshBuffer.h"
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#include "S3DVertex.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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//! A mesh buffer able to choose between S3DVertex2TCoords, S3DVertex and S3DVertexTangents at runtime
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struct SSkinMeshBuffer : public IMeshBuffer
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{
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//! Default constructor
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SSkinMeshBuffer(video::E_VERTEX_TYPE vt = video::EVT_STANDARD) :
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ChangedID_Vertex(1), ChangedID_Index(1), VertexType(vt),
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PrimitiveType(EPT_TRIANGLES), HWBuffer(nullptr),
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MappingHint_Vertex(EHM_NEVER), MappingHint_Index(EHM_NEVER),
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BoundingBoxNeedsRecalculated(true)
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{
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#ifdef _DEBUG
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setDebugName("SSkinMeshBuffer");
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#endif
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}
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//! Get 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 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 standard vertex at given index
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virtual video::S3DVertex *getVertex(u32 index)
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{
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switch (VertexType) {
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case video::EVT_2TCOORDS:
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return (video::S3DVertex *)&Vertices_2TCoords[index];
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case video::EVT_TANGENTS:
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return (video::S3DVertex *)&Vertices_Tangents[index];
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default:
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return &Vertices_Standard[index];
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}
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}
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//! Get pointer to vertex array
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const void *getVertices() const override
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{
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switch (VertexType) {
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case video::EVT_2TCOORDS:
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return Vertices_2TCoords.data();
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case video::EVT_TANGENTS:
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return Vertices_Tangents.data();
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default:
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return Vertices_Standard.data();
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}
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}
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//! Get pointer to vertex array
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void *getVertices() override
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{
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switch (VertexType) {
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case video::EVT_2TCOORDS:
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return Vertices_2TCoords.data();
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case video::EVT_TANGENTS:
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return Vertices_Tangents.data();
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default:
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return Vertices_Standard.data();
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}
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}
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//! Get vertex count
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u32 getVertexCount() const override
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{
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switch (VertexType) {
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case video::EVT_2TCOORDS:
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return static_cast<u32>(Vertices_2TCoords.size());
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case video::EVT_TANGENTS:
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return static_cast<u32>(Vertices_Tangents.size());
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default:
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return static_cast<u32>(Vertices_Standard.size());
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}
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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 index array
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const u16 *getIndices() const override
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{
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return Indices.data();
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}
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//! Get pointer to index array
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u16 *getIndices() override
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{
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return Indices.data();
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}
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//! Get index count
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u32 getIndexCount() const override
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{
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return static_cast<u32>(Indices.size());
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}
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//! Get bounding box
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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 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 bounding box
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void recalculateBoundingBox() override
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{
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if (!BoundingBoxNeedsRecalculated)
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return;
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BoundingBoxNeedsRecalculated = false;
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switch (VertexType) {
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case video::EVT_STANDARD: {
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if (Vertices_Standard.empty())
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BoundingBox.reset(0, 0, 0);
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else {
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BoundingBox.reset(Vertices_Standard[0].Pos);
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for (size_t i = 1; i < Vertices_Standard.size(); ++i)
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BoundingBox.addInternalPoint(Vertices_Standard[i].Pos);
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}
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break;
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}
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case video::EVT_2TCOORDS: {
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if (Vertices_2TCoords.empty())
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BoundingBox.reset(0, 0, 0);
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else {
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BoundingBox.reset(Vertices_2TCoords[0].Pos);
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for (size_t i = 1; i < Vertices_2TCoords.size(); ++i)
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BoundingBox.addInternalPoint(Vertices_2TCoords[i].Pos);
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}
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break;
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}
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case video::EVT_TANGENTS: {
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if (Vertices_Tangents.empty())
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BoundingBox.reset(0, 0, 0);
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else {
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BoundingBox.reset(Vertices_Tangents[0].Pos);
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for (size_t i = 1; i < Vertices_Tangents.size(); ++i)
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BoundingBox.addInternalPoint(Vertices_Tangents[i].Pos);
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}
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break;
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}
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}
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}
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//! Get vertex type
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video::E_VERTEX_TYPE getVertexType() const override
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{
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return VertexType;
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}
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//! Convert to 2tcoords vertex type
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void convertTo2TCoords()
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{
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if (VertexType == video::EVT_STANDARD) {
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for (const auto &Vertex_Standard : Vertices_Standard) {
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video::S3DVertex2TCoords Vertex;
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Vertex.Color = Vertex_Standard.Color;
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Vertex.Pos = Vertex_Standard.Pos;
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Vertex.Normal = Vertex_Standard.Normal;
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Vertex.TCoords = Vertex_Standard.TCoords;
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Vertices_2TCoords.push_back(Vertex);
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}
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Vertices_Standard.clear();
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VertexType = video::EVT_2TCOORDS;
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}
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}
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//! Convert to tangents vertex type
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void convertToTangents()
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{
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if (VertexType == video::EVT_STANDARD) {
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for (const auto &Vertex_Standard : Vertices_Standard) {
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video::S3DVertexTangents Vertex;
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Vertex.Color = Vertex_Standard.Color;
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Vertex.Pos = Vertex_Standard.Pos;
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Vertex.Normal = Vertex_Standard.Normal;
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Vertex.TCoords = Vertex_Standard.TCoords;
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Vertices_Tangents.push_back(Vertex);
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}
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Vertices_Standard.clear();
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VertexType = video::EVT_TANGENTS;
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} else if (VertexType == video::EVT_2TCOORDS) {
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for (const auto &Vertex_2TCoords : Vertices_2TCoords) {
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video::S3DVertexTangents Vertex;
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Vertex.Color = Vertex_2TCoords.Color;
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Vertex.Pos = Vertex_2TCoords.Pos;
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Vertex.Normal = Vertex_2TCoords.Normal;
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Vertex.TCoords = Vertex_2TCoords.TCoords;
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Vertices_Tangents.push_back(Vertex);
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}
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Vertices_2TCoords.clear();
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VertexType = video::EVT_TANGENTS;
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}
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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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switch (VertexType) {
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case video::EVT_2TCOORDS:
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return Vertices_2TCoords[i].Pos;
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case video::EVT_TANGENTS:
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return Vertices_Tangents[i].Pos;
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default:
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return Vertices_Standard[i].Pos;
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}
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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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switch (VertexType) {
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case video::EVT_2TCOORDS:
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return Vertices_2TCoords[i].Pos;
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case video::EVT_TANGENTS:
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return Vertices_Tangents[i].Pos;
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default:
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return Vertices_Standard[i].Pos;
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}
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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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switch (VertexType) {
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case video::EVT_2TCOORDS:
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return Vertices_2TCoords[i].Normal;
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case video::EVT_TANGENTS:
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return Vertices_Tangents[i].Normal;
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default:
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return Vertices_Standard[i].Normal;
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}
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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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switch (VertexType) {
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case video::EVT_2TCOORDS:
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return Vertices_2TCoords[i].Normal;
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case video::EVT_TANGENTS:
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return Vertices_Tangents[i].Normal;
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default:
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return Vertices_Standard[i].Normal;
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}
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}
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//! returns texture coords of vertex i
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const core::vector2df &getTCoords(u32 i) const override
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{
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switch (VertexType) {
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case video::EVT_2TCOORDS:
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return Vertices_2TCoords[i].TCoords;
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case video::EVT_TANGENTS:
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return Vertices_Tangents[i].TCoords;
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default:
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return Vertices_Standard[i].TCoords;
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}
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}
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//! returns texture coords of vertex i
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core::vector2df &getTCoords(u32 i) override
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{
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switch (VertexType) {
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case video::EVT_2TCOORDS:
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return Vertices_2TCoords[i].TCoords;
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case video::EVT_TANGENTS:
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return Vertices_Tangents[i].TCoords;
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default:
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return Vertices_Standard[i].TCoords;
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}
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}
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//! append the vertices and indices to the current buffer
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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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_IRR_DEBUG_BREAK_IF(true);
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}
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//! get the current hardware mapping hint for vertex buffers
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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 for index buffers
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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)
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MappingHint_Vertex = NewMappingHint;
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else if (Buffer == EBT_INDEX)
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MappingHint_Index = NewMappingHint;
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else if (Buffer == EBT_VERTEX_AND_INDEX) {
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MappingHint_Vertex = NewMappingHint;
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MappingHint_Index = NewMappingHint;
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}
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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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u32 getChangedID_Vertex() const override { return ChangedID_Vertex; }
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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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//! Call this after changing the positions of any vertex.
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void boundingBoxNeedsRecalculated(void) { BoundingBoxNeedsRecalculated = true; }
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std::vector<video::S3DVertexTangents> Vertices_Tangents;
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std::vector<video::S3DVertex2TCoords> Vertices_2TCoords;
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std::vector<video::S3DVertex> Vertices_Standard;
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std::vector<u16> Indices;
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u32 ChangedID_Vertex;
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u32 ChangedID_Index;
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// ISkinnedMesh::SJoint *AttachedJoint;
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core::matrix4 Transformation;
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video::SMaterial Material;
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video::E_VERTEX_TYPE VertexType;
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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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mutable void *HWBuffer;
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// hardware mapping hint
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E_HARDWARE_MAPPING MappingHint_Vertex : 3;
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E_HARDWARE_MAPPING MappingHint_Index : 3;
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bool BoundingBoxNeedsRecalculated : 1;
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};
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} // end namespace scene
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} // end namespace irr
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