StrafesNET/bsp_loader
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improve texture transform math

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Quaternions 2024-02-17 20:31:02 -08:00
parent 3cab9afa32
commit c0a85cd719
1 changed files with 5 additions and 5 deletions
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10
src/bsp.rs
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@ -65,9 +65,9 @@ where
let polygon_group_id=model::PolygonGroupId::new(polygon_group_id as u32);
let face_texture=face.texture();
let face_texture_data=face_texture.texture_data();
let (texture_u,texture_v)=(glam::Vec3A::from_slice(&face_texture.texture_transforms_u[0..3]),glam::Vec3A::from_slice(&face_texture.texture_transforms_v[0..3]));
let texture_offset=glam::vec2(face_texture.texture_transforms_u[3],face_texture.texture_transforms_v[3]);
let texture_size=glam::vec2(face_texture_data.width as f32,face_texture_data.height as f32);
//this would be better as a 4x2 matrix
let texture_transform_u=glam::Vec4::from_array(face_texture.texture_transforms_u)/(face_texture_data.width as f32);
let texture_transform_v=glam::Vec4::from_array(face_texture.texture_transforms_v)/(face_texture_data.height as f32);
//this automatically figures out what the texture is trying to do and creates
//a render config for it, and then returns the id to that render config
@ -79,12 +79,12 @@ where
spam_normal.push(valve_transform(<[f32;3]>::from(normal)));
let mut polygon_iter=face.vertex_positions().map(|vertex_position|{
let vertex_xyz=<[f32;3]>::from(vertex_position);
let pos=glam::Vec3A::from_array(vertex_xyz);
let pos_idx=spam_pos.len();
spam_pos.push(valve_transform(vertex_xyz));
//calculate texture coordinates
let tex=(glam::vec2(pos.dot(texture_u),pos.dot(texture_v))+texture_offset)/texture_size;
let pos=glam::Vec3::from_array(vertex_xyz).extend(1.0);
let tex=glam::vec2(texture_transform_u.dot(pos),texture_transform_v.dot(pos));
let tex_idx=spam_tex.len() as u32;
spam_tex.push(tex);