GetMatElement() does not correspond to anything

I am trying to save an .x file, but the Blitz matrix does not appear to correspond to DX matrices:

WriteLine f,GetMatElement(bone,0,0)+","+GetMatElement(bone,0,1)+","+GetMatElement(bone,0,2)+","+GetMatElement(bone,0,3)+","
WriteLine f,GetMatElement(bone,1,0)+","+GetMatElement(bone,1,1)+","+GetMatElement(bone,1,2)+","+GetMatElement(bone,1,3)+","
WriteLine f,GetMatElement(bone,2,0)+","+GetMatElement(bone,2,1)+","+GetMatElement(bone,2,2)+","+GetMatElement(bone,2,3)+","
WriteLine f,GetMatElement(bone,3,0)+","+GetMatElement(bone,3,1)+","+GetMatElement(bone,3,2)+","+GetMatElement(bone,3,3)+";;"

It's a 3x4 matrix, not a 4x4 matrix. So basically you need to fill in the last column yourself. Which is always 0,0,0,1.

It is also a global matrix so if you are trying to do a hierachy, you need to do a bit of mucking about yourself.

It's still just gibberish. Some of the matrices are actually skewed:

WriteLine(f,GetMatElement(bone,0,0)+","+GetMatElement(bone,0,1)+","+GetMatElement(bone,0,2)+",0.0,")
WriteLine(f,GetMatElement(bone,1,0)+","+GetMatElement(bone,1,1)+","+GetMatElement(bone,1,2)+",0.0,")
WriteLine(f,GetMatElement(bone,2,0)+","+GetMatElement(bone,2,1)+","+GetMatElement(bone,2,2)+",0.0,")
WriteLine(f,EntityX(bone,0)+","+EntityY(bone,0)+","+EntityZ(bone,0)+",1.0;;")

Global <> Local

Even so, that would only effect rotations. Each matrix should still not be skewed.

If you have scaled the parent it is skewed. Otherwise you are doing something weird.

If it's global, then this should work, but again, it is gibberish:

bone1=CreatePivot()
PositionEntity bone1,EntityX(bone),EntityY(bone),EntityZ(bone)
RotateEntity bone1,EntityPitch(bone),EntityYaw(bone),EntityRoll(bone)

WriteLine(f,GetMatElement(bone1,0,0)+","+GetMatElement(bone1,0,1)+","+GetMatElement(bone1,0,2)+",0.0,")
WriteLine(f,GetMatElement(bone1,1,0)+","+GetMatElement(bone1,1,1)+","+GetMatElement(bone1,1,2)+",0.0,")
WriteLine(f,GetMatElement(bone1,2,0)+","+GetMatElement(bone1,2,1)+","+GetMatElement(bone1,2,2)+",0.0,")
WriteLine(f,EntityX(bone1,1)+","+EntityY(bone1,1)+","+EntityZ(bone1,1)+",1.0;;")

FreeEntity bone1

To what is it gibberish? That works perfectly fine.

Dammit, the x file code won't fit in this.

Here is my function for writing the hierarchy:

Function XWriteBones(bone,f,tab$="")
WriteLine(f,tab+"Frame "+Entityname(bone))
WriteLine(f,tab+"	{")
WriteLine(f,tab+"	FrameTransformMatrix")
WriteLine(f,tab+"		{")
temp=CreatePivot()
PositionEntity temp,EntityX(bone),EntityY(bone),EntityZ(bone)
RotateEntity temp,EntityPitch(bone),EntityYaw(bone),EntityRoll(bone)
WriteLine(f,tab+"		"+GetMatElement(temp,0,0)+","+GetMatElement(temp,0,1)+","+GetMatElement(temp,0,2)+",0.0,")
WriteLine(f,tab+"		"+GetMatElement(temp,1,0)+","+GetMatElement(temp,1,1)+","+GetMatElement(temp,1,2)+",0.0,")
WriteLine(f,tab+"		"+GetMatElement(temp,2,0)+","+GetMatElement(temp,2,1)+","+GetMatElement(temp,2,2)+",0.0,")
WriteLine(f,tab+"		"+EntityX(temp)+","+EntityY(temp)+","+EntityZ(temp)+",1.0;;")
WriteLine(f,tab+"		}")
FreeEntity temp
For c=1 To CountChildren(bone)
	XWriteBones(GetChild(bone,c),f,tab+"	")
	Next
WriteLine(f,tab+"	}")
End Function

And what exactly is the problem, then?

It works now. I had to do some weird scaling stuff for the orthographic camera to work.

The longer I have been coding, the less patience I have when I run into a problem.

Thanks for trying.

What are you loading the file into?

You can probably post the x file in a codebox
(codebox)...(/codebox) replace () with []