public static ObjProperties GetImportedObjectProperties(
string fileName,
double scale)
{
ObjImporter importer = new ObjImporter();
ObjImporter.meshStruct mesh = importer.ImportFile(fileName);
Vector3d[] vertexPoint = new Vector3d[mesh.vertices.Length];
for (int i = 0; i < mesh.vertices.Length; i++)
{
vertexPoint[i] = mesh.vertices[i];
}
OpenGLUtilities.UnitizeObject(ref vertexPoint);
OpenGLUtilities.ScaleObject(ref vertexPoint, scale);
int nTriangle = mesh.faceData.Length / 3;
int[][] triangleIndex = new int[nTriangle][];
for (int i = 0; i < nTriangle; i++)
{
triangleIndex[i] = new int[] {
(int)mesh.faceData[i * 3].x - 1,
(int)mesh.faceData[(i * 3) + 1].x - 1,
(int)mesh.faceData[(i * 3) + 2].x - 1
};
}
return(new ObjProperties {
vertexPoint = vertexPoint, triangleIndex = triangleIndex
});
}
/// <summary>
/// GL draw solid.
/// </summary>
/// <param name="solid">Solid.</param>
/// <param name="GLM_TEXTURE">If set to <c>true</c> GL add texture coordinates.</param>
/// <param name="GLM_FLAT">If set to <c>true</c> GL add plane normal.</param>
private static void GLDrawSolid(
ObjImporter.meshStruct solid,
Vector3d translate,
bool GLM_TEXTURE,
bool GLM_FLAT,
bool GLM_SMOOTH)
{
int[] indicedata = new int[solid.faceData.Length];
int[] textureData = new int[solid.faceData.Length];
int[] normalData = new int[solid.faceData.Length];
GL.Begin(PrimitiveType.Triangles);
int nTriangle = solid.faceData.Length / 3;
for (int i = 0; i < nTriangle; i++)
{
int index = i * 3;
indicedata [index] = (int)solid.faceData[i * 3].x - 1;
indicedata [index + 1] = (int)solid.faceData[(i * 3) + 1].x - 1;
indicedata [index + 2] = (int)solid.faceData[(i * 3) + 2].x - 1;
textureData[index] = (int)solid.faceData[i * 3].y - 1;
textureData[index + 1] = (int)solid.faceData[(i * 3) + 1].y - 1;
textureData[index + 2] = (int)solid.faceData[(i * 3) + 2].y - 1;
normalData [index] = (int)solid.faceData[i * 3].z - 1;
normalData [index + 1] = (int)solid.faceData[(i * 3) + 1].z - 1;
normalData [index + 2] = (int)solid.faceData[(i * 3) + 2].z - 1;
if (GLM_FLAT)
{
var a = new Vector3d(
solid.vertices[indicedata[index]].x,
solid.vertices[indicedata[index]].y,
solid.vertices[indicedata[index]].z);
var b = new Vector3d(
solid.vertices[indicedata [index + 1]].x,
solid.vertices[indicedata [index + 1]].y,
solid.vertices[indicedata [index + 1]].z);
var c = new Vector3d(
solid.vertices[indicedata [index + 2]].x,
solid.vertices[indicedata [index + 2]].y,
solid.vertices[indicedata [index + 2]].z);
Vector3d normal =
GeometryUtils.CalculateTriangleNormal(a, b, c);
GL.Normal3(normal.x, normal.y, normal.z);
}
if (GLM_SMOOTH)
{
GL.Normal3(
solid.normals[normalData[index]].x,
solid.normals[normalData[index]].y,
solid.normals[normalData[index]].z);
}
if (GLM_TEXTURE && solid.uv.Length > 0)
{
GL.TexCoord2(
solid.uv [textureData [index]].x,
solid.uv [textureData [index]].y);
}
GL.Vertex3(
solid.vertices[indicedata [index]].x - translate.x,
solid.vertices[indicedata [index]].y - translate.y,
solid.vertices[indicedata [index]].z - translate.z);
if (GLM_SMOOTH)
{
GL.Normal3(
solid.normals[normalData[index + 1]].x,
solid.normals[normalData[index + 1]].y,
solid.normals[normalData[index + 1]].z);
}
if (GLM_TEXTURE && solid.uv.Length > 0)
{
GL.TexCoord2(
solid.uv [textureData [index + 1]].x,
solid.uv [textureData [index + 1]].y);
}
GL.Vertex3(
solid.vertices[indicedata [index + 1]].x - translate.x,
solid.vertices[indicedata [index + 1]].y - translate.y,
solid.vertices[indicedata [index + 1]].z - translate.z);
if (GLM_SMOOTH)
{
GL.Normal3(
solid.normals[normalData[index + 2]].x,
solid.normals[normalData[index + 2]].y,
solid.normals[normalData[index + 2]].z);
}
if (GLM_TEXTURE && solid.uv.Length > 0)
{
GL.TexCoord2(
solid.uv [textureData [index + 2]].x,
solid.uv [textureData [index + 2]].y);
}
GL.Vertex3(
solid.vertices[indicedata [index + 2]].x - translate.x,
solid.vertices[indicedata [index + 2]].y - translate.y,
solid.vertices[indicedata [index + 2]].z - translate.z);
}
GL.End();
}