导出OBJ时支持MTL文件

如何在导出OBJ时支持MTL文件

问题: 如何在导出OBJ时支持MTL文件。

提示: 要做到这一点，您可以在导出到OBJ格式时使用材质文件。以下是一个示例。附带了结果文件（ColorImage.obj和ColorImage.mtl）和源文件（ColorImage.dwf）。

示例:

string fileName = "ColorImage";
string file = string.Format("{0}.dwf", fileName);
string outFile = string.Format("{0}.obj", fileName);
string mtlFileName = string.Format("{0}.mtl", fileName);

using (FileStream inStream = new FileStream(file, FileMode.Open))
using (Image image = Image.Load(inStream))
using (FileStream stream = new FileStream(outFile, FileMode.Create))
using (var mtlStream = new FileStream(mtlFileName, FileMode.Create))
{
    ObjOptions options = new ObjOptions();
    options.MtlFileName = mtlFileName;
    options.MtlFileStream = mtlStream;

    options.VectorRasterizationOptions = new CadRasterizationOptions { DrawType = CadDrawTypeMode.UseObjectColor };
    image.Save(stream, options);
}