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Add joint transformation to modelfile

This commit is contained in:
Jarrod Doyle 2024-12-23 17:46:45 +00:00
parent 9c71529d8e
commit a8bdf37097
Signed by: Jayrude
GPG Key ID: 38B57B16E7C0ADF7
1 changed files with 67 additions and 0 deletions
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67
KeepersCompound.LGS/ModelFile.cs
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@ -288,6 +288,73 @@ public class ModelFile
}
}
// TODO: Apply transforms to normals and stuff
public void ApplyJoints(float[] joints)
{
// Build map of objects to their parent id
var objCount = Objects.Length;
var parentIds = new int[objCount];
for (var i = 0; i < objCount; i++)
{
parentIds[i] = -1;
}
for (var i = 0; i < objCount; i++)
{
var subObj = Objects[i];
var childIdx = subObj.Child;
while (childIdx != -1)
{
parentIds[childIdx] = i;
childIdx = Objects[childIdx].Next;
}
}
// Calculate base transforms for every subobj (including joint)
var subObjTransforms = new Matrix4x4[objCount];
for (var i = 0; i < objCount; i++)
{
var subObj = Objects[i];
var objTrans = Matrix4x4.Identity;
if (subObj.Joint != -1)
{
var ang = float.DegreesToRadians(joints[subObj.Joint]);
// TODO: Is this correct? Should I use a manual rotation matrix?
var jointRot = Matrix4x4.CreateFromYawPitchRoll(0, ang, 0);
objTrans = jointRot * subObj.Transform;
}
subObjTransforms[i] = objTrans;
}
// Apply sub object transforms
for (var i = 0; i < objCount; i++)
{
var subObj = Objects[i];
var transform = subObjTransforms[i];
// Build compound transformation
var parentId = parentIds[i];
while (parentId != -1)
{
transform *= subObjTransforms[parentId];
parentId = parentIds[parentId];
}
for (var j = 0; j < subObj.VhotCount; j++)
{
var v = VHots[subObj.VhotIdx + j];
v.Position = Vector3.Transform(v.Position, transform);
VHots[subObj.VhotIdx + j] = v;
}
for (var j = 0; j < subObj.PointCount; j++)
{
var v = Vertices[subObj.PointIdx + j];
Vertices[subObj.PointIdx + j] = Vector3.Transform(v, transform);
}
}
}
public bool TryGetVhot(VhotId id, out VHot vhot)
{
foreach (var v in VHots)