IECoreGL::ConstRenderablePtr StandardLightVisualiser::pointRays()
{
IECoreGL::GroupPtr group = new IECoreGL::Group();
addWireframeCurveState( group.get() );
IECore::CompoundObjectPtr parameters = new CompoundObject;
parameters->members()["aimType"] = new IntData( 1 );
group->getState()->add(
new IECoreGL::ShaderStateComponent( ShaderLoader::defaultShaderLoader(), TextureLoader::defaultTextureLoader(), faceCameraVertexSource(), "", IECoreGL::Shader::constantFragmentSource(), parameters )
);
IntVectorDataPtr vertsPerCurve = new IntVectorData;
V3fVectorDataPtr p = new V3fVectorData;
const int numRays = 8;
for( int i = 0; i < numRays; ++i )
{
const float angle = M_PI * 2.0f * float(i)/(float)numRays;
const V2f dir( cos( angle ), sin( angle ) );
addRay( dir * .5, dir * 1, vertsPerCurve->writable(), p->writable() );
}
IECoreGL::CurvesPrimitivePtr curves = new IECoreGL::CurvesPrimitive( IECore::CubicBasisf::linear(), false, vertsPerCurve );
curves->addPrimitiveVariable( "P", IECore::PrimitiveVariable( IECore::PrimitiveVariable::Vertex, p ) );
curves->addPrimitiveVariable( "Cs", IECore::PrimitiveVariable( IECore::PrimitiveVariable::Constant, new Color3fData( Color3f( 1.0f, 0.835f, 0.07f ) ) ) );
group->addChild( curves );
return group;
}
void StandardLightVisualiser::addEnvLightVisualiser( GroupPtr &output, Color3f multiplier, const std::string &textureName )
{
IECoreGL::GroupPtr sphereGroup = new IECoreGL::Group();
Imath::M44f trans;
trans.scale( V3f( 1, 1, -1 ) );
trans.rotate( V3f( -0.5 * M_PI, -0.5 * M_PI, 0 ) );
sphereGroup->setTransform( trans );
IECoreGL::SpherePrimitivePtr sphere = new IECoreGL::SpherePrimitive();
sphereGroup->addChild( sphere );
IECore::CompoundObjectPtr parameters = new CompoundObject;
parameters->members()["lightMultiplier"] = new Color3fData( multiplier );
parameters->members()["previewOpacity"] = new FloatData( 1 );
parameters->members()["mapSampler"] = new StringData( textureName );
parameters->members()["defaultColor"] = new Color3fData( Color3f( textureName == "" ? 1.0f : 0.0f ) );
sphereGroup->getState()->add(
new IECoreGL::ShaderStateComponent( ShaderLoader::defaultShaderLoader(), TextureLoader::defaultTextureLoader(), IECoreGL::Shader::defaultVertexSource(), "", environmentLightDrawFragSource(), parameters )
);
sphereGroup->getState()->add(
new IECoreGL::DoubleSidedStateComponent( false )
);
output->addChild( sphereGroup );
}
IECoreGL::ConstRenderablePtr StandardLightVisualiser::spotlightCone( float innerAngle, float outerAngle, float lensRadius )
{
IECoreGL::GroupPtr group = new IECoreGL::Group();
addWireframeCurveState( group.get() );
group->getState()->add( new IECoreGL::CurvesPrimitive::GLLineWidth( 1.0f ) );
IECore::CompoundObjectPtr parameters = new CompoundObject;
parameters->members()["aimType"] = new IntData( 0 );
group->getState()->add(
new IECoreGL::ShaderStateComponent( ShaderLoader::defaultShaderLoader(), TextureLoader::defaultTextureLoader(), faceCameraVertexSource(), "", IECoreGL::Shader::constantFragmentSource(), parameters )
);
IntVectorDataPtr vertsPerCurve = new IntVectorData;
V3fVectorDataPtr p = new V3fVectorData;
addCone( innerAngle, lensRadius, vertsPerCurve->writable(), p->writable() );
IECoreGL::CurvesPrimitivePtr curves = new IECoreGL::CurvesPrimitive( IECore::CubicBasisf::linear(), false, vertsPerCurve );
curves->addPrimitiveVariable( "P", IECore::PrimitiveVariable( IECore::PrimitiveVariable::Vertex, p ) );
curves->addPrimitiveVariable( "Cs", IECore::PrimitiveVariable( IECore::PrimitiveVariable::Constant, new Color3fData( Color3f( 1.0f, 0.835f, 0.07f ) ) ) );
group->addChild( curves );
if( fabs( innerAngle - outerAngle ) > 0.1 )
{
IECoreGL::GroupPtr outerGroup = new Group;
outerGroup->getState()->add( new IECoreGL::CurvesPrimitive::GLLineWidth( 0.5f ) );
IntVectorDataPtr vertsPerCurve = new IntVectorData;
V3fVectorDataPtr p = new V3fVectorData;
addCone( outerAngle, lensRadius, vertsPerCurve->writable(), p->writable() );
IECoreGL::CurvesPrimitivePtr curves = new IECoreGL::CurvesPrimitive( IECore::CubicBasisf::linear(), false, vertsPerCurve );
curves->addPrimitiveVariable( "P", IECore::PrimitiveVariable( IECore::PrimitiveVariable::Vertex, p ) );
curves->addPrimitiveVariable( "Cs", IECore::PrimitiveVariable( IECore::PrimitiveVariable::Constant, new Color3fData( Color3f( 1.0f, 0.835f, 0.07f ) ) ) );
outerGroup->addChild( curves );
group->addChild( outerGroup );
}
return group;
}
void StandardLightVisualiser::addBasicLightVisualiser( ConstStringDataPtr type, GroupPtr &output, Color3f multiplier, float coneAngle, float penumbraAngle, const std::string *penumbraType, float lensRadius )
{
bool indicatorFaceCamera = false;
if( !type || type->readable() == "point" )
{
output->addChild( const_pointer_cast<IECoreGL::Renderable>( pointRays() ) );
indicatorFaceCamera = true;
}
else if( type->readable() == "spot" )
{
float innerAngle = 0;
float outerAngle = 0;
if( !penumbraType || *penumbraType == "inset" )
{
outerAngle = coneAngle;
innerAngle = coneAngle - 2.0f * penumbraAngle;
}
else if( *penumbraType == "outset" )
{
outerAngle = coneAngle + 2.0f * penumbraAngle;
innerAngle = coneAngle ;
}
else if( *penumbraType == "absolute" )
{
outerAngle = coneAngle;
innerAngle = penumbraAngle;
}
output->addChild( const_pointer_cast<IECoreGL::Renderable>( spotlightCone( innerAngle, outerAngle, lensRadius ) ) );
output->addChild( const_pointer_cast<IECoreGL::Renderable>( ray() ) );
}
else if( type->readable() == "distant" )
{
for ( int i = 0; i < 3; i++ )
{
IECoreGL::GroupPtr rayGroup = new IECoreGL::Group();
Imath::M44f trans;
trans.rotate( V3f( 0, 0, 2.0 * M_PI / 3.0 * i ) );
trans.translate( V3f( 0, 0.4, 0.5 ) );
rayGroup->addChild( const_pointer_cast<IECoreGL::Renderable>( ray() ) );
rayGroup->setTransform( trans );
output->addChild( rayGroup );
}
}
output->addChild( const_pointer_cast<IECoreGL::Renderable>( colorIndicator( multiplier, indicatorFaceCamera ) ) );
}
IECoreGL::ConstRenderablePtr StandardLightVisualiser::ray()
{
IECoreGL::GroupPtr group = new IECoreGL::Group();
addWireframeCurveState( group.get() );
IECore::CompoundObjectPtr parameters = new CompoundObject;
parameters->members()["aimType"] = new IntData( 0 );
group->getState()->add(
new IECoreGL::ShaderStateComponent( ShaderLoader::defaultShaderLoader(), TextureLoader::defaultTextureLoader(), faceCameraVertexSource(), "", IECoreGL::Shader::constantFragmentSource(), parameters )
);
IntVectorDataPtr vertsPerCurve = new IntVectorData;
V3fVectorDataPtr p = new V3fVectorData;
addRay( V2f( 0 ), V2f( 1, 0 ), vertsPerCurve->writable(), p->writable() );
IECoreGL::CurvesPrimitivePtr curves = new IECoreGL::CurvesPrimitive( IECore::CubicBasisf::linear(), false, vertsPerCurve );
curves->addPrimitiveVariable( "P", IECore::PrimitiveVariable( IECore::PrimitiveVariable::Vertex, p ) );
curves->addPrimitiveVariable( "Cs", IECore::PrimitiveVariable( IECore::PrimitiveVariable::Constant, new Color3fData( Color3f( 1.0f, 0.835f, 0.07f ) ) ) );
group->addChild( curves );
return group;
}
IECoreGL::ConstRenderablePtr StandardLightVisualiser::colorIndicator( const Imath::Color3f &color, bool faceCamera )
{
float maxChannel = std::max( color[0], std::max( color[1], color[2] ) );
float exposure = 0;
Imath::Color3f indicatorColor = color;
if( maxChannel > 1 )
{
indicatorColor = color / maxChannel;
exposure = log( maxChannel ) / log( 2 );
}
IECoreGL::GroupPtr group = new IECoreGL::Group();
IECoreGL::GroupPtr wirelessGroup = new IECoreGL::Group();
IECore::CompoundObjectPtr parameters = new CompoundObject;
parameters->members()["aimType"] = new IntData( 1 );
group->getState()->add(
new IECoreGL::ShaderStateComponent( ShaderLoader::defaultShaderLoader(), TextureLoader::defaultTextureLoader(), faceCamera ? faceCameraVertexSource() : "", "", IECoreGL::Shader::constantFragmentSource(), parameters )
);
wirelessGroup->getState()->add( new IECoreGL::Primitive::DrawWireframe( false ) );
float indicatorRad = 0.3;
int indicatorAxis = faceCamera ? 0 : 2;
{
IntVectorDataPtr vertsPerPoly = new IntVectorData;
IntVectorDataPtr vertIds = new IntVectorData;
V3fVectorDataPtr p = new V3fVectorData;
addSolidArc( indicatorAxis, V3f( 0 ), indicatorRad, indicatorRad * 0.9, 0, 1, vertsPerPoly->writable(), vertIds->writable(), p->writable() );
IECore::MeshPrimitivePtr mesh = new IECore::MeshPrimitive( vertsPerPoly, vertIds, "linear", p );
mesh->variables["N"] = IECore::PrimitiveVariable( IECore::PrimitiveVariable::Constant, new V3fData( V3f( 0 ) ) );
mesh->variables["Cs"] = IECore::PrimitiveVariable( IECore::PrimitiveVariable::Constant, new Color3fData( indicatorColor ) );
ToGLMeshConverterPtr meshConverter = new ToGLMeshConverter( mesh );
group->addChild( IECore::runTimeCast<IECoreGL::Renderable>( meshConverter->convert() ) );
}
{
IntVectorDataPtr vertsPerPoly = new IntVectorData;
IntVectorDataPtr vertIds = new IntVectorData;
V3fVectorDataPtr p = new V3fVectorData;
addSolidArc( indicatorAxis, V3f( 0 ), indicatorRad * 0.4, 0.0, 0, 1, vertsPerPoly->writable(), vertIds->writable(), p->writable() );
for( int i = 0; i < exposure && i < 20; i++ )
{
float startAngle = 1 - pow( 0.875, i );
float endAngle = 1 - pow( 0.875, std::min( i+1.0, (double)exposure ) );
float maxEndAngle = 1 - pow( 0.875, i+1.0);
float sectorScale = ( maxEndAngle - startAngle - 0.008 ) / ( maxEndAngle - startAngle );
addSolidArc( indicatorAxis, V3f( 0 ), indicatorRad * 0.85, indicatorRad * 0.45, startAngle, startAngle + ( endAngle - startAngle ) * sectorScale, vertsPerPoly->writable(), vertIds->writable(), p->writable() );
}
IECore::MeshPrimitivePtr mesh = new IECore::MeshPrimitive( vertsPerPoly, vertIds, "linear", p );
mesh->variables["N"] = IECore::PrimitiveVariable( IECore::PrimitiveVariable::Constant, new V3fData( V3f( 0 ) ) );
mesh->variables["Cs"] = IECore::PrimitiveVariable( IECore::PrimitiveVariable::Constant, new Color3fData( indicatorColor ) );
ToGLMeshConverterPtr meshConverter = new ToGLMeshConverter( mesh );
wirelessGroup->addChild( IECore::runTimeCast<IECoreGL::Renderable>( meshConverter->convert() ) );
}
// For exposures greater than 20, draw an additional solid bar of a darker color at the very end, without any segment dividers
if( exposure > 20 )
{
IntVectorDataPtr vertsPerPoly = new IntVectorData;
IntVectorDataPtr vertIds = new IntVectorData;
V3fVectorDataPtr p = new V3fVectorData;
float startAngle = 1 - pow( 0.875, 20 );
float endAngle = 1 - pow( 0.875, (double)exposure );
addSolidArc( indicatorAxis, V3f( 0 ), indicatorRad * 0.85, indicatorRad * 0.45, startAngle, endAngle, vertsPerPoly->writable(), vertIds->writable(), p->writable() );
IECore::MeshPrimitivePtr mesh = new IECore::MeshPrimitive( vertsPerPoly, vertIds, "linear", p );
mesh->variables["N"] = IECore::PrimitiveVariable( IECore::PrimitiveVariable::Constant, new V3fData( V3f( 0 ) ) );
mesh->variables["Cs"] = IECore::PrimitiveVariable( IECore::PrimitiveVariable::Constant, new Color3fData( 0.5f * indicatorColor ) );
ToGLMeshConverterPtr meshConverter = new ToGLMeshConverter( mesh );
wirelessGroup->addChild( IECore::runTimeCast<IECoreGL::Renderable>( meshConverter->convert() ) );
}
group->addChild( wirelessGroup );
return group;
}