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106 lines
2.3 KiB
V
106 lines
2.3 KiB
V
/**********************************************************************
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*
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* .obj loader
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*
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* Copyright (c) 2021 Dario Deledda. All rights reserved.
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* Use of this source code is governed by an MIT license
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* that can be found in the LICENSE file.
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*
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* TODO:
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**********************************************************************/
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module obj
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import gg.m4
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import sokol.gfx
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// part struct mantain the fae indexes list
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pub struct Part {
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pub mut:
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faces [][][3]int // v n t index order, if -1 not available
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name string
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material string
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}
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// materias struct, all Ks and Ns are stored as maps of string
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pub struct Material {
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pub mut:
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name string
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ks map[string]m4.Vec4
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ns map[string]f32
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maps map[string]string
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}
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// render data used for the rendering
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pub struct Render_data {
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pub mut:
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pipeline gfx.Pipeline
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bind gfx.Bindings
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n_vert u32
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material string
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}
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// base object parts struct
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pub struct ObjPart {
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pub mut:
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v []m4.Vec4 // position
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vn []m4.Vec4 // normals
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vp []m4.Vec4 // vertex params
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vt []m4.Vec4 // textures
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name string
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part []Part // parts of the ObjPart
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mat []Material // list of the materials of the ObjPart
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mat_map map[string]int // maping material name to its material index
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texture map[string]gfx.Image // GPU loaded texture map
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material_file string // .mtl file name for the .obj
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rend_data []Render_data // render data used for the rendering
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t_m m4.Mat4 = m4.unit_m4() // transform matrix for this ObjPart
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// child []ObjPart // childs
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// stats
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min m4.Vec4 // min 3d position in the ObjPart
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max m4.Vec4 // max 3d position in the ObjPart
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radius f32 // bounding circle radius of the ObjPart
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}
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// used in to pass the matrices to the shader
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pub struct Mats {
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pub mut:
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mv m4.Mat4
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mvp m4.Mat4
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nm m4.Mat4
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}
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// data passed to the vertex shader
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pub struct Tmp_vs_param {
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pub mut:
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mv m4.Mat4
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mvp m4.Mat4
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nm m4.Mat4
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}
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// data passed to the pixel shader
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pub struct Tmp_fs_param {
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pub mut:
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ligth m4.Vec4
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ka m4.Vec4 = m4.Vec4{
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e: [f32(0.1), 0.0, 0.0, 1.0]!
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}
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kd m4.Vec4 = m4.Vec4{
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e: [f32(0.5), 0.5, 0.5, 1.0]!
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}
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ks m4.Vec4 = m4.Vec4{
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e: [f32(1.0), 1.0, 1.0, 1.0]!
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}
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}
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// shader data for the rendering
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pub struct Shader_data {
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pub mut:
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vs_data &Tmp_vs_param
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vs_len int
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fs_data &Tmp_fs_param
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fs_len int
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}
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