void setUniform(tgt::Shader* shader, const std::string& volumeUniform, const std::string& structUniform, const VolumeBase* vh, const tgt::TextureUnit* texUnit, const tgt::Camera* camera, const tgt::vec4& lightPosition) {
if(texUnit)
shader->setUniform(volumeUniform, texUnit->getUnitNumber());
// volume size, i.e. dimensions of the proxy geometry in world coordinates
shader->setUniform(structUniform + ".datasetDimensions_", tgt::vec3(vh->getDimensions()));
shader->setUniform(structUniform + ".datasetDimensionsRCP_", vec3(1.f) / tgt::vec3(vh->getDimensions()));
// volume spacing, i.e. voxel size
shader->setUniform(structUniform + ".datasetSpacing_", vh->getSpacing());
shader->setUniform(structUniform + ".datasetSpacingRCP_", vec3(1.f) / vh->getSpacing());
// volume's size in its physical coordinates
shader->setUniform(structUniform + ".volumeCubeSize_", vh->getCubeSize());
shader->setUniform(structUniform + ".volumeCubeSizeRCP_", vec3(1.f) / vh->getCubeSize());
shader->setUniform(structUniform + ".volumeOffset_", vh->getOffset());
shader->setUniform(structUniform + ".numChannels_", static_cast<GLint>(vh->getNumChannels()));
// volume's transformation matrix
shader->setUniform(structUniform + ".physicalToWorldMatrix_", vh->getPhysicalToWorldMatrix());
tgt::mat4 invTm = vh->getWorldToPhysicalMatrix();
shader->setUniform(structUniform + ".worldToPhysicalMatrix_", invTm);
shader->setUniform(structUniform + ".worldToTextureMatrix_", vh->getWorldToTextureMatrix());
shader->setUniform(structUniform + ".textureToWorldMatrix_", vh->getTextureToWorldMatrix());
// camera position in volume object coords
if (camera)
shader->setUniform(structUniform + ".cameraPositionPhysical_", invTm*camera->getPosition());
// light position in volume object coords
shader->setUniform(structUniform + ".lightPositionPhysical_", (invTm*lightPosition).xyz());
LGL_ERROR;
// bit depth of the volume
shader->setUniform(structUniform + ".bitDepth_", (GLint)(vh->getBytesPerVoxel() * 8));
// construct shader real-world mapping by combining volume rwm and pixel transfer mapping
RealWorldMapping rwm = vh->getRealWorldMapping();
RealWorldMapping transferMapping;
if (vh->getRepresentation<VolumeGL>())
transferMapping = vh->getRepresentation<VolumeGL>()->getPixelTransferMapping();
else
LWARNINGC("voreen.glsl", "setUniform(): no VolumeGL");
RealWorldMapping shaderMapping = RealWorldMapping::combine(transferMapping.getInverseMapping(), rwm);
shader->setUniform(structUniform + ".rwmScale_", shaderMapping.getScale());
shader->setUniform(structUniform + ".rwmOffset_", shaderMapping.getOffset());
}
void setUniform(tgt::Shader* shader, const std::string& imageUniform, const std::string& structUniform, const Slice* sl, const tgt::TextureUnit* texUnit) {
bool ignoreErr = shader->getIgnoreUniformLocationError();
shader->setIgnoreUniformLocationError(true);
if(texUnit)
shader->setUniform(imageUniform, texUnit->getUnitNumber());
// volume size, i.e. dimensions of the proxy geometry in world coordinates
shader->setUniform(structUniform + ".datasetDimensions_", tgt::vec3(sl->getTexture()->getDimensions()));
shader->setUniform(structUniform + ".datasetDimensionsRCP_", vec3(1.f) / tgt::vec3(sl->getTexture()->getDimensions()));
// volume spacing, i.e. voxel size
//shader->setUniform(structUniform + ".datasetSpacing_", sl->getSpacing());
//shader->setUniform(structUniform + ".datasetSpacingRCP_", vec3(1.f) / sl->getSpacing());
shader->setUniform(structUniform + ".numChannels_", static_cast<GLint>(sl->getTexture()->getNumChannels()));
//shader->setUniform(structUniform + ".numChannels_", static_cast<GLint>(1));
// volume's transformation matrix
//shader->setUniform(structUniform + ".physicalToWorldMatrix_", sl->getPhysicalToWorldMatrix());
//tgt::mat4 invTm = sl->getWorldToPhysicalMatrix();
//shader->setUniform(structUniform + ".worldToPhysicalMatrix_", invTm);
shader->setUniform(structUniform + ".worldToTextureMatrix_", sl->getWorldToTextureMatrix());
shader->setUniform(structUniform + ".textureToWorldMatrix_", sl->getTextureToWorldMatrix());
LGL_ERROR;
// construct shader real-world mapping by combining volume rwm and pixel transfer mapping
RealWorldMapping rwm = sl->getRealWorldMapping();
//RealWorldMapping transferMapping;
//if (sl->getRepresentation<VolumeGL>())
//transferMapping = sl->getRepresentation<VolumeGL>()->getPixelTransferMapping();
//else
//LWARNINGC("voreen.glsl", "setUniform(): no VolumeGL");
//RealWorldMapping shaderMapping = RealWorldMapping::combine(transferMapping.getInverseMapping(), rwm);
RealWorldMapping shaderMapping = rwm;
shader->setUniform(structUniform + ".rwmScale_", shaderMapping.getScale());
shader->setUniform(structUniform + ".rwmOffset_", shaderMapping.getOffset());
shader->setIgnoreUniformLocationError(ignoreErr);
}
void TransFunc1DKeysEditor::volumeChanged() {
if (volume_ /*&& volume_->hasRepresentation<VolumeRAM>()*/) {
updateDataBounds();
/*if(unit == "")
dataLabel_->setText("Data Bounds");
else
dataLabel_->setText(QString("Data Bounds [") + QString::fromStdString(unit) + "]");*/
RealWorldMapping rwm = volume_->getRealWorldMapping();
if(property_->getAlwaysFitToDomain() || (((rwm.getOffset() != 0.0f) || (rwm.getScale() != 1.0f) ||
(rwm.getUnit() != "")) && *transferFuncIntensity_ == TransFunc1DKeys())) {
fitDomainToData();
}
// propagate new volume to transfuncMappingCanvas
transCanvas_->volumeChanged(volume_);
}
else {
transCanvas_->volumeChanged(0);
}
checkDomainVersusData();
}