public static void PlaceTextureOnFaces(this Mesh mesh, IEnumerable <int> faces, ImageBuffer textureToUse, Matrix4X4 textureCoordinateMapping)
{
var faceTextures = new Dictionary <int, FaceTextureData>();
var uvs = new Vector2Float[3];
foreach (var face in faces)
{
int uvIndex = 0;
foreach (int vertexIndex in new int[] { mesh.Faces[face].v0, mesh.Faces[face].v1, mesh.Faces[face].v2 })
{
var edgeStartPosition = mesh.Vertices[vertexIndex];
var textureUv = edgeStartPosition.Transform(textureCoordinateMapping);
uvs[uvIndex++] = new Vector2Float(textureUv);
}
faceTextures.Add(face, new FaceTextureData(textureToUse, uvs[0], uvs[1], uvs[2]));
}
// add in any existing face textures
if (mesh.FaceTextures != null)
{
foreach (var kvp in mesh.FaceTextures)
{
faceTextures[kvp.Key] = kvp.Value;
}
}
mesh.FaceTextures = faceTextures;
mesh.MarkAsChanged();
}
public static void PlaceTexture(this Mesh mesh, ImageBuffer textureToUse, Matrix4X4 textureCoordinateMapping)
{
foreach (var face in mesh.Faces)
{
face.PlaceTextureOnFace(textureToUse, textureCoordinateMapping);
}
mesh.MarkAsChanged();
}
public static void RemoveTexture(this Mesh mesh, ImageBuffer texture, int index)
{
foreach (var face in mesh.Faces)
{
face.RemoveTexture(texture, index);
}
mesh.MarkAsChanged();
}
public static void PlaceTexture(this Mesh mesh, ImageBuffer textureToUse, Matrix4X4 textureCoordinateMapping)
{
for (int i = 0; i < mesh.Faces.Count; i++)
{
mesh.PlaceTextureOnFace(i, textureToUse, textureCoordinateMapping, false);
}
mesh.MarkAsChanged();
}
public static void RemoveTexture(this Mesh mesh, ImageBuffer texture, int index)
{
for (int i = 0; i < mesh.Faces.Count; i++)
{
mesh.RemoveTexture(i, texture, index);
}
mesh.MarkAsChanged();
}
public static void RemoveTexture(this Mesh mesh, int faceIndex, ImageBuffer texture, int index)
{
var faceTextures = mesh.FaceTextures;
if (faceTextures.ContainsKey(faceIndex) &&
faceTextures[faceIndex].image == texture)
{
faceTextures.Remove(faceIndex);
mesh.MarkAsChanged();
}
}
public static void PlaceTextureOnFace(this Mesh mesh, int face, ImageBuffer textureToUse, Matrix4X4 textureCoordinateMapping)
{
var uvs = new Vector2Float[3];
int uvIndex = 0;
foreach (int vertexIndex in new int[] { mesh.Faces[face].v0, mesh.Faces[face].v1, mesh.Faces[face].v2 })
{
var edgeStartPosition = mesh.Vertices[vertexIndex];
var textureUv = edgeStartPosition.Transform(textureCoordinateMapping);
uvs[uvIndex++] = new Vector2Float(textureUv);
}
mesh.FaceTextures.Add(face, new FaceTextureData(textureToUse, uvs[0], uvs[1], uvs[2]));
mesh.MarkAsChanged();
}