// ------------------------------------------------------------------------------------------------
// Convert a 3DS texture to texture keys in an aiMaterial
void CopyTexture(aiMaterial& mat, D3DS::Texture& texture, aiTextureType type)
{
// Setup the texture name
aiString tex;
tex.Set( texture.mMapName);
mat.AddProperty( &tex, AI_MATKEY_TEXTURE(type,0));
// Setup the texture blend factor
if (is_not_qnan(texture.mTextureBlend))
mat.AddProperty<float>( &texture.mTextureBlend, 1, AI_MATKEY_TEXBLEND(type,0));
// Setup the texture mapping mode
mat.AddProperty<int>((int*)&texture.mMapMode,1,AI_MATKEY_MAPPINGMODE_U(type,0));
mat.AddProperty<int>((int*)&texture.mMapMode,1,AI_MATKEY_MAPPINGMODE_V(type,0));
// Mirroring - double the scaling values
// FIXME: this is not really correct ...
if (texture.mMapMode == aiTextureMapMode_Mirror)
{
texture.mScaleU *= 2.f;
texture.mScaleV *= 2.f;
texture.mOffsetU /= 2.f;
texture.mOffsetV /= 2.f;
}
// Setup texture UV transformations
mat.AddProperty<float>(&texture.mOffsetU,5,AI_MATKEY_UVTRANSFORM(type,0));
}
// ------------------------------------------------------------------------------------------------
// Convert a material from AC3DImporter::Material to aiMaterial
void AC3DImporter::ConvertMaterial(const Object& object,
const Material& matSrc,
aiMaterial& matDest)
{
aiString s;
if (matSrc.name.length())
{
s.Set(matSrc.name);
matDest.AddProperty(&s,AI_MATKEY_NAME);
}
if (object.texture.length())
{
s.Set(object.texture);
matDest.AddProperty(&s,AI_MATKEY_TEXTURE_DIFFUSE(0));
// UV transformation
if (1.f != object.texRepeat.x || 1.f != object.texRepeat.y ||
object.texOffset.x || object.texOffset.y)
{
aiUVTransform transform;
transform.mScaling = object.texRepeat;
transform.mTranslation = object.texOffset;
matDest.AddProperty(&transform,1,AI_MATKEY_UVTRANSFORM_DIFFUSE(0));
}
}
matDest.AddProperty<aiColor3D>(&matSrc.rgb,1, AI_MATKEY_COLOR_DIFFUSE);
matDest.AddProperty<aiColor3D>(&matSrc.amb,1, AI_MATKEY_COLOR_AMBIENT);
matDest.AddProperty<aiColor3D>(&matSrc.emis,1,AI_MATKEY_COLOR_EMISSIVE);
matDest.AddProperty<aiColor3D>(&matSrc.spec,1,AI_MATKEY_COLOR_SPECULAR);
int n;
if (matSrc.shin)
{
n = aiShadingMode_Phong;
matDest.AddProperty<float>(&matSrc.shin,1,AI_MATKEY_SHININESS);
}
else n = aiShadingMode_Gouraud;
matDest.AddProperty<int>(&n,1,AI_MATKEY_SHADING_MODEL);
float f = 1.f - matSrc.trans;
matDest.AddProperty<float>(&f,1,AI_MATKEY_OPACITY);
}
// ------------------------------------------------------------------------------------------------
// Copy a texture from the ASE structs to the output material
void CopyASETexture(aiMaterial& mat, ASE::Texture& texture, aiTextureType type)
{
// Setup the texture name
aiString tex;
tex.Set( texture.mMapName);
mat.AddProperty( &tex, AI_MATKEY_TEXTURE(type,0));
// Setup the texture blend factor
if (is_not_qnan(texture.mTextureBlend))
mat.AddProperty<float>( &texture.mTextureBlend, 1, AI_MATKEY_TEXBLEND(type,0));
// Setup texture UV transformations
mat.AddProperty<float>(&texture.mOffsetU,5,AI_MATKEY_UVTRANSFORM(type,0));
}
// ------------------------------------------------------------------------------------------------
// Convert a 3DS material to an aiMaterial
void Discreet3DSImporter::ConvertMaterial(D3DS::Material& oldMat,
aiMaterial& mat)
{
// NOTE: Pass the background image to the viewer by bypassing the
// material system. This is an evil hack, never do it again!
if (0 != mBackgroundImage.length() && bHasBG)
{
aiString tex;
tex.Set( mBackgroundImage);
mat.AddProperty( &tex, AI_MATKEY_GLOBAL_BACKGROUND_IMAGE);
// Be sure this is only done for the first material
mBackgroundImage = std::string("");
}
// At first add the base ambient color of the scene to the material
oldMat.mAmbient.r += mClrAmbient.r;
oldMat.mAmbient.g += mClrAmbient.g;
oldMat.mAmbient.b += mClrAmbient.b;
aiString name;
name.Set( oldMat.mName);
mat.AddProperty( &name, AI_MATKEY_NAME);
// Material colors
mat.AddProperty( &oldMat.mAmbient, 1, AI_MATKEY_COLOR_AMBIENT);
mat.AddProperty( &oldMat.mDiffuse, 1, AI_MATKEY_COLOR_DIFFUSE);
mat.AddProperty( &oldMat.mSpecular, 1, AI_MATKEY_COLOR_SPECULAR);
mat.AddProperty( &oldMat.mEmissive, 1, AI_MATKEY_COLOR_EMISSIVE);
// Phong shininess and shininess strength
if (D3DS::Discreet3DS::Phong == oldMat.mShading ||
D3DS::Discreet3DS::Metal == oldMat.mShading)
{
if (!oldMat.mSpecularExponent || !oldMat.mShininessStrength)
{
oldMat.mShading = D3DS::Discreet3DS::Gouraud;
}
else
{
mat.AddProperty( &oldMat.mSpecularExponent, 1, AI_MATKEY_SHININESS);
mat.AddProperty( &oldMat.mShininessStrength, 1, AI_MATKEY_SHININESS_STRENGTH);
}
}
// Opacity
mat.AddProperty<float>( &oldMat.mTransparency,1,AI_MATKEY_OPACITY);
// Bump height scaling
mat.AddProperty<float>( &oldMat.mBumpHeight,1,AI_MATKEY_BUMPSCALING);
// Two sided rendering?
if (oldMat.mTwoSided)
{
int i = 1;
mat.AddProperty<int>(&i,1,AI_MATKEY_TWOSIDED);
}
// Shading mode
aiShadingMode eShading = aiShadingMode_NoShading;
switch (oldMat.mShading)
{
case D3DS::Discreet3DS::Flat:
eShading = aiShadingMode_Flat; break;
// I don't know what "Wire" shading should be,
// assume it is simple lambertian diffuse shading
case D3DS::Discreet3DS::Wire:
{
// Set the wireframe flag
unsigned int iWire = 1;
mat.AddProperty<int>( (int*)&iWire,1,AI_MATKEY_ENABLE_WIREFRAME);
}
case D3DS::Discreet3DS::Gouraud:
eShading = aiShadingMode_Gouraud; break;
// assume cook-torrance shading for metals.
case D3DS::Discreet3DS::Phong :
eShading = aiShadingMode_Phong; break;
case D3DS::Discreet3DS::Metal :
eShading = aiShadingMode_CookTorrance; break;
// FIX to workaround a warning with GCC 4 who complained
// about a missing case Blinn: here - Blinn isn't a valid
// value in the 3DS Loader, it is just needed for ASE
case D3DS::Discreet3DS::Blinn :
eShading = aiShadingMode_Blinn; break;
}
mat.AddProperty<int>( (int*)&eShading,1,AI_MATKEY_SHADING_MODEL);
// DIFFUSE texture
if( oldMat.sTexDiffuse.mMapName.length() > 0)
CopyTexture(mat,oldMat.sTexDiffuse, aiTextureType_DIFFUSE);
// SPECULAR texture
if( oldMat.sTexSpecular.mMapName.length() > 0)
CopyTexture(mat,oldMat.sTexSpecular, aiTextureType_SPECULAR);
// OPACITY texture
if( oldMat.sTexOpacity.mMapName.length() > 0)
CopyTexture(mat,oldMat.sTexOpacity, aiTextureType_OPACITY);
// EMISSIVE texture
if( oldMat.sTexEmissive.mMapName.length() > 0)
CopyTexture(mat,oldMat.sTexEmissive, aiTextureType_EMISSIVE);
// BUMP texture
if( oldMat.sTexBump.mMapName.length() > 0)
CopyTexture(mat,oldMat.sTexBump, aiTextureType_HEIGHT);
// SHININESS texture
if( oldMat.sTexShininess.mMapName.length() > 0)
CopyTexture(mat,oldMat.sTexShininess, aiTextureType_SHININESS);
// REFLECTION texture
if( oldMat.sTexReflective.mMapName.length() > 0)
CopyTexture(mat,oldMat.sTexReflective, aiTextureType_REFLECTION);
// Store the name of the material itself, too
if( oldMat.mName.length()) {
aiString tex;
tex.Set( oldMat.mName);
mat.AddProperty( &tex, AI_MATKEY_NAME);
}
}
