NvCloth 1.1.4 Release. (24070740)

1 files changed, 273 insertions, 0 deletions

diff --git a/NvCloth/samples/external/assimp-4.1.0/code/TerragenLoader.cpp b/NvCloth/samples/external/assimp-4.1.0/code/TerragenLoader.cpp
new file mode 100644
index 0000000..0126229
--- /dev/null
+++ b/NvCloth/samples/external/assimp-4.1.0/code/TerragenLoader.cpp
@@ -0,0 +1,273 @@
+/*
+---------------------------------------------------------------------------
+Open Asset Import Library (assimp)
+---------------------------------------------------------------------------
+
+Copyright (c) 2006-2017, assimp team
+
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the following
+conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+---------------------------------------------------------------------------
+*/
+
+/** @file Implementation of the Terragen importer class */
+
+
+
+#ifndef ASSIMP_BUILD_NO_TERRAGEN_IMPORTER
+
+#include "TerragenLoader.h"
+#include "StreamReader.h"
+#include <assimp/Importer.hpp>
+#include <assimp/IOSystem.hpp>
+#include <assimp/scene.h>
+#include <assimp/DefaultLogger.hpp>
+#include <assimp/importerdesc.h>
+
+using namespace Assimp;
+
+static const aiImporterDesc desc = {
+    "Terragen Heightmap Importer",
+    "",
+    "",
+    "http://www.planetside.co.uk/",
+    aiImporterFlags_SupportBinaryFlavour,
+    0,
+    0,
+    0,
+    0,
+    "ter"
+};
+
+// ------------------------------------------------------------------------------------------------
+// Constructor to be privately used by Importer
+TerragenImporter::TerragenImporter()
+: configComputeUVs (false)
+{}
+
+// ------------------------------------------------------------------------------------------------
+// Destructor, private as well
+TerragenImporter::~TerragenImporter()
+{}
+
+// ------------------------------------------------------------------------------------------------
+// Returns whether the class can handle the format of the given file.
+bool TerragenImporter::CanRead( const std::string& pFile, IOSystem* pIOHandler, bool checkSig) const
+{
+    // check file extension
+    std::string extension = GetExtension(pFile);
+
+    if( extension == "ter")
+        return true;
+
+    if(  !extension.length() || checkSig)   {
+        /*  If CanRead() is called in order to check whether we
+         *  support a specific file extension in general pIOHandler
+         *  might be NULL and it's our duty to return true here.
+         */
+        if (!pIOHandler)return true;
+        const char* tokens[] = {"terragen"};
+        return SearchFileHeaderForToken(pIOHandler,pFile,tokens,1);
+    }
+    return false;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Build a string of all file extensions supported
+const aiImporterDesc* TerragenImporter::GetInfo () const
+{
+    return &desc;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Setup import properties
+void TerragenImporter::SetupProperties(const Importer* pImp)
+{
+    // AI_CONFIG_IMPORT_TER_MAKE_UVS
+    configComputeUVs = ( 0 != pImp->GetPropertyInteger(AI_CONFIG_IMPORT_TER_MAKE_UVS,0) );
+}
+
+// ------------------------------------------------------------------------------------------------
+// Imports the given file into the given scene structure.
+void TerragenImporter::InternReadFile( const std::string& pFile,
+    aiScene* pScene, IOSystem* pIOHandler)
+{
+    IOStream* file = pIOHandler->Open( pFile, "rb");
+
+    // Check whether we can read from the file
+    if( file == NULL)
+        throw DeadlyImportError( "Failed to open TERRAGEN TERRAIN file " + pFile + ".");
+
+    // Construct a stream reader to read all data in the correct endianness
+    StreamReaderLE reader(file);
+    if(reader.GetRemainingSize() < 16)
+        throw DeadlyImportError( "TER: file is too small" );
+
+    // Check for the existence of the two magic strings 'TERRAGEN' and 'TERRAIN '
+    if (::strncmp((const char*)reader.GetPtr(),AI_TERR_BASE_STRING,8))
+        throw DeadlyImportError( "TER: Magic string \'TERRAGEN\' not found" );
+
+    if (::strncmp((const char*)reader.GetPtr()+8,AI_TERR_TERRAIN_STRING,8))
+        throw DeadlyImportError( "TER: Magic string \'TERRAIN\' not found" );
+
+    unsigned int x = 0,y = 0,mode = 0;
+
+    aiNode* root = pScene->mRootNode = new aiNode();
+    root->mName.Set("<TERRAGEN.TERRAIN>");
+
+    // Default scaling is 30
+    root->mTransformation.a1 = root->mTransformation.b2 = root->mTransformation.c3 = 30.f;
+
+    // Now read all chunks until we're finished or an EOF marker is encountered
+    reader.IncPtr(16);
+    while (reader.GetRemainingSize() >= 4)
+    {
+        const char* head = (const char*)reader.GetPtr();
+        reader.IncPtr(4);
+
+        // EOF, break in every case
+        if (!::strncmp(head,AI_TERR_EOF_STRING,4))
+            break;
+
+        // Number of x-data points
+        if (!::strncmp(head,AI_TERR_CHUNK_XPTS,4))
+        {
+            x = (uint16_t)reader.GetI2();
+        }
+        // Number of y-data points
+        else if (!::strncmp(head,AI_TERR_CHUNK_YPTS,4))
+        {
+            y = (uint16_t)reader.GetI2();
+        }
+        // Squared terrains width-1.
+        else if (!::strncmp(head,AI_TERR_CHUNK_SIZE,4))
+        {
+            x = y = (uint16_t)reader.GetI2()+1;
+        }
+        // terrain scaling
+        else if (!::strncmp(head,AI_TERR_CHUNK_SCAL,4))
+        {
+            root->mTransformation.a1 = reader.GetF4();
+            root->mTransformation.b2 = reader.GetF4();
+            root->mTransformation.c3 = reader.GetF4();
+        }
+        // mapping == 1: earth radius
+        else if (!::strncmp(head,AI_TERR_CHUNK_CRAD,4))
+        {
+            reader.GetF4();
+        }
+        // mapping mode
+        else if (!::strncmp(head,AI_TERR_CHUNK_CRVM,4))
+        {
+            mode = reader.GetI1();
+            if (0 != mode)
+                DefaultLogger::get()->error("TER: Unsupported mapping mode, a flat terrain is returned");
+        }
+        // actual terrain data
+        else if (!::strncmp(head,AI_TERR_CHUNK_ALTW,4))
+        {
+            float hscale  = (float)reader.GetI2()  / 65536;
+            float bheight = (float)reader.GetI2();
+
+            if (!hscale)hscale = 1;
+
+            // Ensure we have enough data
+            if (reader.GetRemainingSize() < x*y*2)
+                throw DeadlyImportError("TER: ALTW chunk is too small");
+
+            if (x <= 1 || y <= 1)
+                throw DeadlyImportError("TER: Invalid terrain size");
+
+            // Allocate the output mesh
+            pScene->mMeshes = new aiMesh*[pScene->mNumMeshes = 1];
+            aiMesh* m = pScene->mMeshes[0] = new aiMesh();
+
+            // We return quads
+            aiFace* f = m->mFaces = new aiFace[m->mNumFaces = (x-1)*(y-1)];
+            aiVector3D* pv = m->mVertices = new aiVector3D[m->mNumVertices = m->mNumFaces*4];
+
+            aiVector3D *uv( NULL );
+            float step_y( 0.0f ), step_x( 0.0f );
+            if (configComputeUVs) {
+                uv = m->mTextureCoords[0] = new aiVector3D[m->mNumVertices];
+                step_y = 1.f/y;
+                step_x = 1.f/x;
+            }
+            const int16_t* data = (const int16_t*)reader.GetPtr();
+
+            for (unsigned int yy = 0, t = 0; yy < y-1;++yy) {
+                for (unsigned int xx = 0; xx < x-1;++xx,++f)    {
+
+                    // make verts
+                    const float fy = (float)yy, fx = (float)xx;
+                    unsigned tmp,tmp2;
+                    *pv++ = aiVector3D(fx,fy,    (float)data[(tmp2=x*yy)    + xx] * hscale + bheight);
+                    *pv++ = aiVector3D(fx,fy+1,  (float)data[(tmp=x*(yy+1)) + xx] * hscale + bheight);
+                    *pv++ = aiVector3D(fx+1,fy+1,(float)data[tmp  + xx+1]         * hscale + bheight);
+                    *pv++ = aiVector3D(fx+1,fy,  (float)data[tmp2 + xx+1]         * hscale + bheight);
+
+                    // also make texture coordinates, if necessary
+                    if (configComputeUVs) {
+                        *uv++ = aiVector3D( step_x*xx,     step_y*yy,     0.f );
+                        *uv++ = aiVector3D( step_x*xx,     step_y*(yy+1), 0.f );
+                        *uv++ = aiVector3D( step_x*(xx+1), step_y*(yy+1), 0.f );
+                        *uv++ = aiVector3D( step_x*(xx+1), step_y*yy,     0.f );
+                    }
+
+                    // make indices
+                    f->mIndices = new unsigned int[f->mNumIndices = 4];
+                    for (unsigned int i = 0; i < 4;++i)
+                        f->mIndices[i] = t++;
+                }
+            }
+
+            // Add the mesh to the root node
+            root->mMeshes = new unsigned int[root->mNumMeshes = 1];
+            root->mMeshes[0] = 0;
+        }
+
+        // Get to the next chunk (4 byte aligned)
+        unsigned dtt;
+        if ((dtt = reader.GetCurrentPos() & 0x3))
+            reader.IncPtr(4-dtt);
+    }
+
+    // Check whether we have a mesh now
+    if (pScene->mNumMeshes != 1)
+        throw DeadlyImportError("TER: Unable to load terrain");
+
+    // Set the AI_SCENE_FLAGS_TERRAIN bit
+    pScene->mFlags |= AI_SCENE_FLAGS_TERRAIN;
+}
+
+#endif // !! ASSIMP_BUILD_NO_TERRAGEN_IMPORTER