public RhinoGltfMetallicRoughnessConverter GetMetallicRoughnessTexture(int textureIndex)
{
System.Drawing.Bitmap bmp = GetTextureBitmap(textureIndex, out string name);
RhinoGltfMetallicRoughnessConverter converter = new RhinoGltfMetallicRoughnessConverter(bmp, doc, name);
return(converter);
}
public Rhino.Render.RenderMaterial Convert()
{
RenderMaterial pbr = RenderContentType.NewContentFromTypeId(ContentUuids.PhysicallyBasedMaterialType, doc) as RenderMaterial;
pbr.BeginChange(RenderContent.ChangeContexts.Program);
pbr.Name = converter.GetUniqueName(material.Name);
if (material.PbrMetallicRoughness != null)
{
Rhino.Display.Color4f baseColor = material.PbrMetallicRoughness.BaseColorFactor.ToColor4f();
if (material.PbrMetallicRoughness.BaseColorTexture != null)
{
int index = material.PbrMetallicRoughness.BaseColorTexture.Index;
RenderTexture texture = converter.GetRenderTexture(index, baseColor);
pbr.SetChild(texture, Rhino.Render.ParameterNames.PhysicallyBased.BaseColor);
pbr.SetChildSlotOn(Rhino.Render.ParameterNames.PhysicallyBased.BaseColor, true, RenderContent.ChangeContexts.Program);
}
baseColor = GltfUtils.UnapplyGamma(baseColor);
pbr.SetParameter(PhysicallyBased.BaseColor, baseColor);
double roughness = material.PbrMetallicRoughness.RoughnessFactor;
double metalness = material.PbrMetallicRoughness.MetallicFactor;
if (material.PbrMetallicRoughness.MetallicRoughnessTexture != null)
{
int index = material.PbrMetallicRoughness.MetallicRoughnessTexture.Index;
RhinoGltfMetallicRoughnessConverter metallicRoughness = converter.GetMetallicRoughnessTexture(index);
pbr.SetChild(metallicRoughness.MetallicTexture, PhysicallyBased.Metallic);
pbr.SetChildSlotOn(PhysicallyBased.Metallic, true, RenderContent.ChangeContexts.Program);
pbr.SetChildSlotAmount(PhysicallyBased.Metallic, metalness * 100.0, RenderContent.ChangeContexts.Program);
pbr.SetChild(metallicRoughness.RoughnessTexture, PhysicallyBased.Roughness);
pbr.SetChildSlotOn(PhysicallyBased.Roughness, true, RenderContent.ChangeContexts.Program);
pbr.SetChildSlotAmount(PhysicallyBased.Roughness, roughness * 100.0, RenderContent.ChangeContexts.Program);
}
else
{
pbr.SetParameter(PhysicallyBased.Roughness, roughness);
pbr.SetParameter(PhysicallyBased.Metallic, metalness);
}
}
Rhino.Display.Color4f emissionColor = material.EmissiveFactor.ToColor4f();
emissionColor = GltfUtils.UnapplyGamma(emissionColor);
pbr.SetParameter(PhysicallyBased.Emission, emissionColor);
if (material.EmissiveTexture != null)
{
RenderTexture emissiveTexture = converter.GetRenderTexture(material.EmissiveTexture.Index);
pbr.SetChild(emissiveTexture, PhysicallyBased.Emission);
pbr.SetChildSlotOn(PhysicallyBased.Emission, true, RenderContent.ChangeContexts.Program);
}
if (material.OcclusionTexture != null)
{
RenderTexture occlusionTexture = converter.GetRenderTexture(material.OcclusionTexture.Index);
pbr.SetChild(occlusionTexture, PhysicallyBased.AmbientOcclusion);
pbr.SetChildSlotOn(PhysicallyBased.AmbientOcclusion, true, RenderContent.ChangeContexts.Program);
pbr.SetChildSlotAmount(PhysicallyBased.AmbientOcclusion, material.OcclusionTexture.Strength * 100.0, RenderContent.ChangeContexts.Program);
}
if (material.NormalTexture != null)
{
RenderTexture normalTexture = converter.GetRenderTexture(material.NormalTexture.Index);
pbr.SetChild(normalTexture, PhysicallyBased.Bump);
pbr.SetChildSlotOn(PhysicallyBased.Bump, true, RenderContent.ChangeContexts.Program);
}
string clearcoatText = "";
string transmissionText = "";
string iorText = "";
string specularText = "";
if (material.Extensions != null)
{
if (material.Extensions.TryGetValue(glTFExtensions.KHR_materials_clearcoat.Tag, out object clearcoatValue))
{
clearcoatText = clearcoatValue.ToString();
}
if (material.Extensions.TryGetValue(glTFExtensions.KHR_materials_transmission.Tag, out object transmissionValue))
{
transmissionText = transmissionValue.ToString();
}
if (material.Extensions.TryGetValue(glTFExtensions.KHR_materials_ior.Tag, out object iorValue))
{
iorText = iorValue.ToString();
}
if (material.Extensions.TryGetValue(glTFExtensions.KHR_materials_specular.Tag, out object specularValue))
{
specularText = specularValue.ToString();
}
}
HandleClearcoat(clearcoatText, pbr);
HandleTransmission(transmissionText, pbr);
HandleIor(iorText, pbr);
HandleSpecular(specularText, pbr);
pbr.EndChange();
doc.RenderMaterials.BeginChange(RenderContent.ChangeContexts.Program);
doc.RenderMaterials.Add(pbr);
doc.RenderMaterials.EndChange();
return(pbr);
}