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MD2

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- fixed UV coords
 - added further test models

Collada
 - fixed invalid aiStrings

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@343 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
This commit is contained in:
aramis_acg
2009-02-12 15:58:55 +00:00
parent e5b06832b7
commit fd9769eae6
17 changed files with 201 additions and 81 deletions
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68
code/MD2Loader.cpp
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@@ -275,19 +275,19 @@ void MD2Importer::InternReadFile( const std::string& pFile,
pcMesh->mVertices = new aiVector3D[pcMesh->mNumVertices];
pcMesh->mNormals = new aiVector3D[pcMesh->mNumVertices];
// not sure whether there are MD2 files without texture coordinates
// Not sure whether there are MD2 files without texture coordinates
// NOTE: texture coordinates can be there without a texture,
// but a texture can't be there without a valid UV channel
MaterialHelper* pcHelper = (MaterialHelper*)pScene->mMaterials[0];
const int iMode = (int)aiShadingMode_Gouraud;
pcHelper->AddProperty<int>(&iMode, 1, AI_MATKEY_SHADING_MODEL);
if (m_pcHeader->numTexCoords && m_pcHeader->numSkins)
{
// navigate to the first texture associated with the mesh
const MD2::Skin* pcSkins = (const MD2::Skin*) ((unsigned char*)m_pcHeader +
m_pcHeader->offsetSkins);
const int iMode = (int)aiShadingMode_Gouraud;
MaterialHelper* pcHelper = (MaterialHelper*)pScene->mMaterials[0];
pcHelper->AddProperty<int>(&iMode, 1, AI_MATKEY_SHADING_MODEL);
aiColor3D clr;
clr.b = clr.g = clr.r = 1.0f;
pcHelper->AddProperty<aiColor3D>(&clr, 1,AI_MATKEY_COLOR_DIFFUSE);
@@ -306,18 +306,13 @@ void MD2Importer::InternReadFile( const std::string& pFile,
pcHelper->AddProperty(&szString,AI_MATKEY_TEXTURE_DIFFUSE(0));
}
else
{
else{
DefaultLogger::get()->warn("Texture file name has zero length. It will be skipped.");
}
}
else
{
// apply a default material
const int iMode = (int)aiShadingMode_Gouraud;
MaterialHelper* pcHelper = (MaterialHelper*)pScene->mMaterials[0];
pcHelper->AddProperty<int>(&iMode, 1, AI_MATKEY_SHADING_MODEL);
aiColor3D clr;
clr.b = clr.g = clr.r = 0.6f;
pcHelper->AddProperty<aiColor3D>(&clr, 1,AI_MATKEY_COLOR_DIFFUSE);
@@ -327,16 +322,22 @@ void MD2Importer::InternReadFile( const std::string& pFile,
pcHelper->AddProperty<aiColor3D>(&clr, 1,AI_MATKEY_COLOR_AMBIENT);
aiString szName;
szName.Set(AI_DEFAULT_MATERIAL_NAME);
szName.Set("MD2Default");
pcHelper->AddProperty(&szName,AI_MATKEY_NAME);
aiString sz;
// TODO: Try to guess the name of the texture file from the model file name
sz.Set("texture_dummmy.bmp");
pcHelper->AddProperty(&sz,AI_MATKEY_TEXTURE_DIFFUSE(0));
}
// now read all triangles of the first frame, apply scaling and translation
unsigned int iCurrent = 0;
float fDivisorU = 1.0f;
float fDivisorV = 1.0f;
float fDivisorU = 1.0f,fDivisorV = 1.0f;
if (m_pcHeader->numTexCoords)
{
// allocate storage for texture coordinates, too
@@ -345,30 +346,25 @@ void MD2Importer::InternReadFile( const std::string& pFile,
// check whether the skin width or height are zero (this would
// cause a division through zero)
if (!m_pcHeader->skinWidth)
{
DefaultLogger::get()->error("Skin width is zero but there are "
"valid absolute texture coordinates");
if (!m_pcHeader->skinWidth) {
DefaultLogger::get()->error("MD2: No valid skin width given");
}
else fDivisorU = (float)m_pcHeader->skinWidth;
if (!m_pcHeader->skinHeight)
{
DefaultLogger::get()->error("Skin height is zero but there are "
"valid absolute texture coordinates ");
if (!m_pcHeader->skinHeight){
DefaultLogger::get()->error("MD2: No valid skin height given");
}
else fDivisorV = (float)m_pcHeader->skinHeight;
}
for (unsigned int i = 0; i < (unsigned int)m_pcHeader->numTriangles;++i)
{
// allocate the face
// Allocate the face
pScene->mMeshes[0]->mFaces[i].mIndices = new unsigned int[3];
pScene->mMeshes[0]->mFaces[i].mNumIndices = 3;
// copy texture coordinates
// check whether they are different from the previous value at this index.
// In this case, create a full separate set of vertices/normals/texcoords
unsigned int iTemp = iCurrent;
for (unsigned int c = 0; c < 3;++c,++iCurrent)
{
// validate vertex indices
@@ -385,10 +381,8 @@ void MD2Importer::InternReadFile( const std::string& pFile,
vec.x = (float)pcVerts[iIndex].vertex[0] * pcFrame->scale[0];
vec.x += pcFrame->translate[0];
// invert y
vec.y = (float)pcVerts[iIndex].vertex[1] * pcFrame->scale[1];
vec.y += pcFrame->translate[1];
vec.y *= -1.0f;
vec.z = (float)pcVerts[iIndex].vertex[2] * pcFrame->scale[2];
vec.z += pcFrame->translate[2];
@@ -396,14 +390,15 @@ void MD2Importer::InternReadFile( const std::string& pFile,
// read the normal vector from the precalculated normal table
aiVector3D& vNormal = pcMesh->mNormals[iCurrent];
LookupNormalIndex(pcVerts[iIndex].lightNormalIndex,vNormal);
vNormal.y *= -1.0f;
if (m_pcHeader->numTexCoords)
{
// invert z for proper output coordinate system
vNormal.z *= -1.0f;
vec.z *= -1.0f;
if (m_pcHeader->numTexCoords) {
// validate texture coordinates
iIndex = pcTriangles[iIndex].textureIndices[c];
if (iIndex >= m_pcHeader->numTexCoords)
{
iIndex = pcTriangles[i].textureIndices[c];
if (iIndex >= m_pcHeader->numTexCoords) {
DefaultLogger::get()->error("MD2: UV index is outside the allowed range");
iIndex = m_pcHeader->numTexCoords-1;
}
@@ -412,14 +407,11 @@ void MD2Importer::InternReadFile( const std::string& pFile,
// the texture coordinates are absolute values but we
// need relative values between 0 and 1
pcOut.y = pcTexCoords[iIndex].s / fDivisorU;
pcOut.x = pcTexCoords[iIndex].t / fDivisorV;
pcOut.x = pcTexCoords[iIndex].s / fDivisorU;
pcOut.y = 1.f-pcTexCoords[iIndex].t / fDivisorV;
}
pScene->mMeshes[0]->mFaces[i].mIndices[c] = iCurrent;
}
// FIX: flip the face order for use with OpenGL
pScene->mMeshes[0]->mFaces[i].mIndices[0] = iTemp+2;
pScene->mMeshes[0]->mFaces[i].mIndices[1] = iTemp+1;
pScene->mMeshes[0]->mFaces[i].mIndices[2] = iTemp+0;
}
}