Hi, I have a pretty decent 3D engine. I can draw models, sprites, load textures without a problem, and I can fly around with my cam, use lights and all the basic stuff.
I have been putting this off for way too long - but I've finally taken the step
to actually make the models do something.
The problem is, I can't display my bones correctly.
If I draw them like points, they appear like they should,
assuming that bones[...].position[...] in the ms3d spec file is the joints
absolute x-,y-,z- coordinates and not anything relative to a given position - like its parent-joint.
I try to connect the joints positions with a line for every joint that has a parent, that is I push two vertices at a time into a vertexbuffer in the order: parent, child, parent, child, parent, child,... and then render the buffer like a list of separate lines with D3DPT_LINELIST.
My problem is that I get these failed bones:
The Failed Bones
Compared to how they should be:
The bones in Milkshape 3D
Below is the linkage between all the joints in psuedo-code. (A correct text-dump of the actual MS3D-file)
Each valid joint is linked with the indexes of the parent- and child- joints.
Much the same as how the triangles are linked through the indexes of the vertexbuffer.
So the syntax in the bone-list below is:
bone( index ) = ( parent-joint, child-joint )
I can't see where the problem is... Everything seems fine in the dump file. Tey seem correctly linked. And I have loaded the file correctly, that much I know for sure. I've double-checked with an MS3D text-dump of the same file.
Any help would be appreciated, and if you can't see a problem in my logic or how I've linked the bones or how I've rendered them, then that would also be appreciated so I atleast know that much.
Is the problem with the rendering of the bones or the linking of them?
Model(...)
{
Vertices( 839 )
Triangles( 1007 )
Mesh Groups( 2 )
Materials( 5 )
Textures( 5 )
Joints( 28 )
Bones( 27 )
Frames( 300 )
FPS( 25.00 )
Bonelist
{
Bone(0) = { 0, 1 }
Bone(1) = { 1, 2 }
Bone(2) = { 1, 18 }
Bone(3) = { 1, 23 }
Bone(4) = { 2, 3 }
Bone(5) = { 3, 4 }
Bone(6) = { 4, 5 }
Bone(7) = { 5, 6 }
Bone(8) = { 5, 8 }
Bone(9) = { 5, 14 }
Bone(10) = { 6, 7 }
Bone(11) = { 8, 9 }
Bone(12) = { 9, 10 }
Bone(13) = { 10, 11 }
Bone(14) = { 11, 12 }
Bone(15) = { 12, 13 }
Bone(16) = { 14, 15 }
Bone(17) = { 15, 16 }
Bone(18) = { 16, 17 }
Bone(19) = { 18, 19 }
Bone(20) = { 19, 20 }
Bone(21) = { 20, 21 }
Bone(22) = { 21, 22 }
Bone(23) = { 23, 24 }
Bone(24) = { 24, 25 }
Bone(25) = { 25, 26 }
Bone(26) = { 26, 27 }
}
Jointlist
{
Joint(Joint1).Index: 0
{
ParentName:
ParentIndex: -1
}
Joint(Joint2).Index: 1
{
ParentName: Joint1
ParentIndex: 0
}
Joint(Joint3).Index: 2
{
ParentName: Joint2
ParentIndex: 1
}
Joint(Joint4).Index: 3
{
ParentName: Joint3
ParentIndex: 2
}
Joint(Joint5).Index: 4
{
ParentName: Joint4
ParentIndex: 3
}
Joint(Joint6).Index: 5
{
ParentName: Joint5
ParentIndex: 4
}
Joint(Joint7).Index: 6
{
ParentName: Joint6
ParentIndex: 5
}
Joint(Joint8).Index: 7
{
ParentName: Joint7
ParentIndex: 6
}
Joint(Joint9).Index: 8
{
ParentName: Joint6
ParentIndex: 5
}
Joint(Joint10).Index: 9
{
ParentName: Joint9
ParentIndex: 8
}
Joint(Joint11).Index: 10
{
ParentName: Joint10
ParentIndex: 9
}
Joint(Joint12).Index: 11
{
ParentName: Joint11
ParentIndex: 10
}
Joint(Joint13).Index: 12
{
ParentName: Joint12
ParentIndex: 11
}
Joint(Joint29).Index: 13
{
ParentName: Joint13
ParentIndex: 12
}
Joint(Joint14).Index: 14
{
ParentName: Joint6
ParentIndex: 5
}
Joint(Joint15).Index: 15
{
ParentName: Joint14
ParentIndex: 14
}
Joint(Joint16).Index: 16
{
ParentName: Joint15
ParentIndex: 15
}
Joint(Joint17).Index: 17
{
ParentName: Joint16
ParentIndex: 16
}
Joint(Joint18).Index: 18
{
ParentName: Joint2
ParentIndex: 1
}
Joint(Joint19).Index: 19
{
ParentName: Joint18
ParentIndex: 18
}
Joint(Joint20).Index: 20
{
ParentName: Joint19
ParentIndex: 19
}
Joint(Joint21).Index: 21
{
ParentName: Joint20
ParentIndex: 20
}
Joint(Joint22).Index: 22
{
ParentName: Joint21
ParentIndex: 21
}
Joint(Joint23).Index: 23
{
ParentName: Joint2
ParentIndex: 1
}
Joint(Joint24).Index: 24
{
ParentName: Joint23
ParentIndex: 23
}
Joint(Joint25).Index: 25
{
ParentName: Joint24
ParentIndex: 24
}
Joint(Joint26).Index: 26
{
ParentName: Joint25
ParentIndex: 25
}
Joint(Joint27).Index: 27
{
ParentName: Joint26
ParentIndex: 26
}
}
struct Bone{
unsigned short parentIndex;
unsigned short childIndex;
}
