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Add preliminary support for writing shape keys into MDL files

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This is not complete as it only deals with the header data and doesn't
append the morphed vertices properly yet.
This commit is contained in:
Joshua Goins 2024-03-05 17:08:07 -05:00
parent 6bf60b0cfd
commit 733a079f9a
1 changed files with 54 additions and 1 deletions
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55
src/model.rs
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@ -368,6 +368,13 @@ impl Default for Vertex {
}
}
#[derive(Clone, Copy)]
#[repr(C)]
pub struct NewShapeValue {
pub base_index: u32,
pub replacing_vertex: Vertex
}
#[derive(Clone, Copy)]
#[repr(C)]
pub struct SubMesh {
@ -633,7 +640,7 @@ impl MDL {
for shape_value in shape_values {
let old_vertex = vertices[indices[shape_value.base_indices_index as usize] as usize];
let new_vertex = vertices[shape_value.replacing_vertex_index as usize - model.meshes[j as usize].start_index as usize];
let mut vertex = &mut morphed_vertices[indices[shape_value.base_indices_index as usize] as usize];
let vertex = &mut morphed_vertices[indices[shape_value.base_indices_index as usize] as usize];
vertex.position[0] = new_vertex.position[0] - old_vertex.position[0];
vertex.position[1] = new_vertex.position[1] - old_vertex.position[1];
@ -692,6 +699,48 @@ impl MDL {
self.update_headers();
}
pub fn remove_shape_meshes(&mut self) {
self.model_data.shape_meshes.clear();
self.model_data.shape_values.clear();
for lod in 0..3 {
for shape in &mut self.model_data.shapes {
shape.shape_mesh_count[lod] = 0;
shape.shape_mesh_start_index[lod] = 0;
}
}
self.update_headers();
}
pub fn add_shape_mesh(&mut self, lod_index: usize, shape_index: usize, shape_mesh_index: usize, part_index: usize, shape_values: &[NewShapeValue]) {
let part = &mut self.lods[lod_index].parts[part_index];
// TODO: this is assuming they are added in order
if shape_mesh_index == 0 {
self.model_data.shapes[shape_index].shape_mesh_start_index[lod_index] = self.model_data.shape_meshes.len() as u16;
}
self.model_data.shape_meshes.push(ShapeMesh {
mesh_index_offset: self.model_data.meshes[part.mesh_index as usize].start_index,
shape_value_count: shape_values.len() as u32,
shape_value_offset: self.model_data.shape_values.len() as u32
});
for shape_value in shape_values {
part.vertices.push(shape_value.replacing_vertex);
self.model_data.shape_values.push(ShapeValue {
base_indices_index: self.model_data.meshes[part.mesh_index as usize].start_index as u16 + shape_value.base_index as u16,
replacing_vertex_index: self.model_data.meshes[part.mesh_index as usize].start_index as u16 + (part.vertices.len() - 1) as u16
})
}
self.model_data.shapes[shape_index].shape_mesh_count[lod_index] += 1;
self.update_headers();
}
pub(crate) fn update_headers(&mut self) {
// update values
for i in 0..self.file_header.lod_count {
@ -784,6 +833,10 @@ impl MDL {
for i in 0..self.lods.len() {
self.file_header.index_offsets[i] = self.model_data.lods[i].index_data_offset;
}
self.model_data.header.shape_count = self.model_data.shapes.len() as u16;
self.model_data.header.shape_mesh_count = self.model_data.shape_meshes.len() as u16;
self.model_data.header.shape_value_count = self.model_data.shape_values.len() as u16;
}
pub fn write_to_buffer(&self) -> Option<ByteBuffer> {