public Obj3DText(string txt, TextPlane plane, float size, float posX, float posY, float posZ, float dirAngle, string color, Texture fontTex)
{
Matrix2 rotMat = Matrix2.CreateRotation(MathHelper.DegreesToRadians(dirAngle));
float [] verts = new float[txt.Length * 4 * 5];
uint [] inds = new uint[txt.Length * 6];
int vp = 0;
int ip = 0;
for (int i = 0; i < txt.Length; i++)
{
char ch = txt[i];
uint svp = (uint)vp; // save first index
// top left
Vector3 v3p = GetTranslatedPoint(posX, posY, posZ, size, i, 0, rotMat, plane); // 3d vector
Vector2 vtp = GetTextureCorner(ch, 0, 0); // texture vector
SetVertex(verts, vp++, v3p, vtp);
// top right
v3p = GetTranslatedPoint(posX, posY, posZ, size, i + 1, 0, rotMat, plane); // 3d vector
vtp = GetTextureCorner(ch, 1, 0); // texture vector
SetVertex(verts, vp++, v3p, vtp);
// bootom left
v3p = GetTranslatedPoint(posX, posY, posZ, size, i, -1, rotMat, plane); // 3d vector
vtp = GetTextureCorner(ch, 0, 1); // texture vector
SetVertex(verts, vp++, v3p, vtp);
// bootom right
v3p = GetTranslatedPoint(posX, posY, posZ, size, i + 1, -1, rotMat, plane); // 3d vector
vtp = GetTextureCorner(ch, 1, 1); // texture vector
SetVertex(verts, vp++, v3p, vtp);
// indexes, 2 triangles
inds[ip++] = svp;
inds[ip++] = svp + 2;
inds[ip++] = svp + 1;
inds[ip++] = svp + 2;
inds[ip++] = svp + 3;
inds[ip++] = svp + 1;
}
Init(Shader.ShadingType.Textured3D, verts, inds, fontTex);
SetColor(color);
}
Vector3 GetTranslatedPoint(float posx, float posy, float posz, float scale, int cornerx, int cornery, Matrix2 rotMat, TextPlane plane)
{
Vector3 vres = new OpenTK.Vector3();
Vector2 vcorner = new OpenTK.Vector2(cornerx * scale, cornery * scale * 2);
Vector2 tcorner = ApplyMatrix(rotMat, vcorner);
switch (plane)
{
case TextPlane.XY: vres.X = posx + tcorner.X; vres.Y = posy + tcorner.Y; vres.Z = posz; break;
case TextPlane.XZ: vres.X = posx + tcorner.X; vres.Y = posy; vres.Z = posz + tcorner.Y; break;
case TextPlane.ZY: vres.X = posx; vres.Y = posy + tcorner.Y; vres.Z = posz + tcorner.X; break;
}
return(vres);
}
