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Tidy up mesh transform calculation

This commit is contained in:
Jarrod Doyle 2024-12-23 17:54:52 +00:00
parent 0f9467b8c4
commit bf47578133
Signed by: Jayrude
GPG Key ID: 38B57B16E7C0ADF7
1 changed files with 7 additions and 14 deletions
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21
KeepersCompound.Lightmapper/MeshBuilder.cs
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@ -113,6 +113,7 @@ public class MeshBuilder
}
// Let's try and place an object :)
// TODO: Handle failing to find model more gracefully
var modelName = modelNameProp.value.ToLower() + ".bin";
var modelPath = campaignResources.GetResourcePath(ResourceType.Object, modelName);
if (modelPath == null)
@ -123,20 +124,12 @@ public class MeshBuilder
var model = new ModelFile(modelPath);
model.ApplyJoints(joints);
// TODO: Handle failing to find model more gracefully
var pos = brush.position;
var rot = brush.angle;
var scale = scaleProp?.value ?? Vector3.One;
pos -= model.Header.Center;
// Calculate base model transform
var scalePart = Matrix4x4.CreateScale(scale);
var rotPart = Matrix4x4.Identity;
rotPart *= Matrix4x4.CreateRotationX(float.DegreesToRadians(rot.X));
rotPart *= Matrix4x4.CreateRotationY(float.DegreesToRadians(rot.Y));
rotPart *= Matrix4x4.CreateRotationZ(float.DegreesToRadians(rot.Z));
var transPart = Matrix4x4.CreateTranslation(pos);
var modelTrans = scalePart * rotPart * transPart;
var transform = Matrix4x4.CreateScale(scaleProp?.value ?? Vector3.One);
transform *= Matrix4x4.CreateRotationX(float.DegreesToRadians(brush.angle.X));
transform *= Matrix4x4.CreateRotationY(float.DegreesToRadians(brush.angle.Y));
transform *= Matrix4x4.CreateRotationZ(float.DegreesToRadians(brush.angle.Z));
transform *= Matrix4x4.CreateTranslation(brush.position - model.Header.Center);
// for each polygon slam its vertices and indices :)
foreach (var poly in model.Polygons)
@ -146,7 +139,7 @@ public class MeshBuilder
foreach (var idx in poly.VertexIndices)
{
var vertex = model.Vertices[idx];
vertex = Vector3.Transform(vertex, modelTrans);
vertex = Vector3.Transform(vertex, transform);
polyVertices.Add(vertex);
}