private static Material UseMaterial(WavefrontMaterialLoader materialLoader, string line)
{
var node = UseMaterialRegex.Match(line).Groups[1].Value;
var material = materialLoader.FindByName(node);
if (material == null)
{
var rgbNode = node;
for (var c = '0'; c <= '9'; c++)
{
rgbNode = rgbNode.Replace(c, '-');
}
if (rgbNode.IndexOf("R-", StringComparison.Ordinal) != -1 &&
rgbNode.IndexOf("G-", StringComparison.Ordinal) != -1 &&
rgbNode.IndexOf("-B", StringComparison.Ordinal) != -1)
{
var red = byte.Parse(node.Substring(1, node.IndexOf('G')));
var grn = byte.Parse(node.Substring(node.IndexOf('G') + 1, node.IndexOf('B')));
var blu = byte.Parse(node.Substring(node.IndexOf('B') + 1));
material = new Material {
Diffuse = ColorF.FromRgb(red, grn, blu)
};
materialLoader.AddCustomMaterial(node, material);
}
else
{
material = new Material();
}
}
return(material);
}
public Model LoadModel(string name)
{
var directives = Encoding.ASCII.GetString(LoadResource(name));
var wavefrontMaterialLoader = new WavefrontMaterialLoader(this, directives);
return(new WavefrontLoader().LoadModel(wavefrontMaterialLoader, directives));
}
public Model LoadModel(WavefrontMaterialLoader materialLoader, string directives)
{
var model = new Model();
var material = new Material();
using var br = new StringReader(directives);
var line = br.ReadLine();
while (line != null)
{
if (line.Length > 0)
{
var type = line.Substring(0, line.IndexOf(' ')).Trim().ToLower();
if (type.Equals("v"))
{
var match = VertexRegex.Match(line.Trim());
var x = float.Parse(match.Groups[1].Value);
var y = float.Parse(match.Groups[2].Value);
var z = float.Parse(match.Groups[3].Value);
model.AddVertex(x, y, z);
}
else if (type.Equals("f"))
{
LoadFace(model, line.Trim(), material);
}
else if (type.Equals("g"))
{
model.CurrentGroup = GroupRegex.Match(line.Trim()).Groups[1].Value;
}
else if (type.Equals("usemtl"))
{
material = UseMaterial(materialLoader, line.Trim());
}
}
line = br.ReadLine();
}
return(model);
}
