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libs: model3d moves to github.com/hexops/mach-model3d

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2023-07-01 22:34:14 -07:00
parent 4a56244912
commit aa117760c7
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libs/model3d/.gitattributes vendored
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* text=auto eol=lf
upstream/** linguist-vendored

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libs/model3d/.github/FUNDING.yml vendored
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github: slimsag

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libs/model3d/.github/pull_request_template.md vendored
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Please send your change to [the main repository](https://github.com/hexops/mach/tree/main/libs/model3d) instead, sorry for the trouble!
This helps us avoid some complex merge conflicts we run into when changes are made to both repositories and history needs to be reconciled. Keeping PRs in just that repository enables us to use `git subtree` to trivially keep the two repositories in sync.
Once your PR is merged over there, it'll automatically sync to this repository.

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name: CI
on:
- push
- pull_request
jobs:
x86_64-linux:
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@v2
- name: Setup Zig
run: |
sudo apt install xz-utils
sudo sh -c 'wget -c https://ziglang.org/builds/zig-linux-x86_64-0.11.0-dev.3883+7166407d8.tar.xz -O - | tar -xJ --strip-components=1 -C /usr/local/bin'
- name: build
run: zig build
- name: test
run: zig build test
x86_64-windows:
runs-on: windows-latest
steps:
- name: Checkout
uses: actions/checkout@v2
- name: Setup Zig
run: |
$ProgressPreference = 'SilentlyContinue'
Invoke-WebRequest -Uri "https://ziglang.org/builds/zig-windows-x86_64-0.11.0-dev.3883+7166407d8.zip" -OutFile "C:\zig.zip"
cd C:\
7z x zig.zip
Add-Content $env:GITHUB_PATH "C:\zig-windows-x86_64-0.11.0-dev.3883+7166407d8\"
- name: build
run: zig build
- name: test
run: zig build test
x86_64-macos:
runs-on: macos-latest
steps:
- name: Checkout
uses: actions/checkout@v2
- name: Setup Zig
run: |
brew install xz
sudo sh -c 'wget -c https://ziglang.org/builds/zig-macos-x86_64-0.11.0-dev.3883+7166407d8.tar.xz -O - | tar -xJ --strip-components=1 -C /usr/local/bin'
- name: build
run: zig build
env:
AGREE: true
- name: test
run: zig build test
env:
AGREE: true

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libs/model3d/.gitignore vendored
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# This file is for zig-specific build artifacts.
# If you have OS-specific or editor-specific files to ignore,
# such as *.swp or .DS_Store, put those in your global
# ~/.gitignore and put this in your ~/.gitconfig:
#
# [core]
# excludesfile = ~/.gitignore
#
# Cheers!
# -andrewrk
zig-cache/
zig-out/
/release/
/debug/
/build/
/build-*/
/docgen_tmp/

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libs/model3d/LICENSE
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Copyright 2021, Hexops Contributors (given via the Git commit history).
All documentation, image, sound, font, and 2D/3D model files are CC-BY-4.0 licensed unless
otherwise noted. You may get a copy of this license at https://creativecommons.org/licenses/by/4.0
Files in a directory with a separate LICENSE file may contain files under different license terms,
described within that LICENSE file.
All other files are licensed under the Apache License, Version 2.0 (see LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
or the MIT license (see LICENSE-MIT or http://opensource.org/licenses/MIT), at your option.
All files in the project without exclusions may not be copied, modified, or distributed except
according to the terms above.

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libs/model3d/LICENSE-APACHE
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libs/model3d/LICENSE-MIT
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Copyright (c) 2021 Hexops Contributors (given via the Git commit history).
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The above copyright notice and this permission notice
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
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SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

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libs/model3d/README.md
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# mach/model3d - compact, featureful model format & alternative to glTF
[Model3D](https://gitlab.com/bztsrc/model3d/) is an up-and-coming compact, featureful, universal model format that tries to address the shortcomings of existing formats (yes, including glTF - see [their rationale](https://gitlab.com/bztsrc/model3d/#rationale).)
This repository provides Zig bindings, with the aim of a pure-Zig implementation eventually.
This repository is a separate copy of the same library in the [main Mach repository](https://github.com/hexops/mach), and is automatically kept in sync, so that anyone can use this library in their own project if they like!
## Experimental
This is an _experimental_ Mach library, according to our [stability guarantees](https://machengine.org/next/docs/libs/):
> Experimental libraries may have their APIs change without much notice, and you may have to look at recent changes in order to update your code.
[Why this library is not declared stable yet](https://machengine.org/next/docs/libs/experimental/#model3d)
## Join the community
Join the Mach community [on Discord](https://discord.gg/XNG3NZgCqp) to discuss this project, ask questions, get help, etc.
## Issues
Issues are tracked in the [main Mach repository](https://github.com/hexops/mach/issues?q=is%3Aissue+is%3Aopen+label%3Amodel3d).
## Contributing
Contributions are very welcome. Pull requests must be sent to [the main repository](https://github.com/hexops/mach/tree/main/libs/model3d) to avoid some complex merge conflicts we'd get by accepting contributions in both repositories. Once the changes are merged there, they'll get sync'd to this repository automatically.

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libs/model3d/build.zig
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const std = @import("std");
var _module: ?*std.build.Module = null;
pub fn module(b: *std.Build) *std.build.Module {
if (_module) |m| return m;
_module = b.createModule(.{
.source_file = .{ .path = sdkPath("/src/main.zig") },
});
return _module.?;
}
pub fn build(b: *std.Build) void {
const optimize = b.standardOptimizeOption(.{});
const target = b.standardTargetOptions(.{});
const test_step = b.step("test", "Run library tests");
test_step.dependOn(&testStep(b, optimize, target).step);
}
pub fn testStep(b: *std.Build, optimize: std.builtin.OptimizeMode, target: std.zig.CrossTarget) *std.build.RunStep {
const main_tests = b.addTest(.{
.name = "model3d-tests",
.root_source_file = .{ .path = sdkPath("/src/main.zig") },
.target = target,
.optimize = optimize,
});
link(b, main_tests, target);
b.installArtifact(main_tests);
return b.addRunArtifact(main_tests);
}
pub fn link(b: *std.Build, step: *std.build.CompileStep, target: std.zig.CrossTarget) void {
const lib = b.addStaticLibrary(.{
.name = "model3d",
.target = target,
.optimize = step.optimize,
});
// Note: model3d needs unaligned accesses, which are safe on all modern architectures.
// See https://gitlab.com/bztsrc/model3d/-/issues/19
lib.addCSourceFile(sdkPath("/src/c/m3d.c"), &.{ "-std=c89", "-fno-sanitize=alignment" });
lib.linkLibC();
step.addIncludePath(sdkPath("/src/c/"));
step.linkLibrary(lib);
}
fn sdkPath(comptime suffix: []const u8) []const u8 {
if (suffix[0] != '/') @compileError("suffix must be an absolute path");
return comptime blk: {
const root_dir = std.fs.path.dirname(@src().file) orelse ".";
break :blk root_dir ++ suffix;
};
}

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#define M3D_IMPLEMENTATION
#define M3D_EXPORTER
#include "m3d.h"

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const std = @import("std");
const c = @cImport(@cInclude("m3d.h"));
const testing = std.testing;
pub const Error = error{
/// memory allocation error
OutOfMemory,
/// malformed text file (ASCII import only)
BadFile,
/// unimplemented interpreter (procedural surface)
Unimplemented,
/// unknown material property record
Unknown,
/// unknown mesh record (only triangles supported)
UnknownMeshRecord,
/// unknown image format (PNG only)
UnknownImageFormat,
/// unknown action or frame or missing bones
UnknownActionFrame,
/// unknown shape command record
UnknownCommand,
/// no voxel dimension or voxel size defined
UnknownVoxel,
/// either the precision or number of bones truncated
Truncated,
/// too many or no chunk of color map
UnexpectedColorMapCount,
/// too many or no chunk of texture map
UnexpectedTextureMapCount,
/// too many or no chunk of vertices
UnexpectedVerticeCount,
/// too many or no chunk of bones
UnexpectedBoneCount,
/// too many or no chunk of material
UnexpectedMaterialCount,
/// too many or no chunk of shape
UnexpectedShapeCount,
/// too many or no chunk of voxel
UnexpectedVoxelCount,
};
const M3d = @This();
handle: *c.m3d_t,
pub fn load(data: [:0]u8, readfile_fn: ?ReadFn, free_fn: ?FreeFn, mtllib: ?M3d) ?M3d {
return .{
.handle = c.m3d_load(
data.ptr,
readfile_fn,
free_fn,
if (mtllib) |m| m.handle else null,
) orelse return null,
};
}
pub fn deinit(self: M3d) void {
c.m3d_free(self.handle);
}
/// return value must be freed with std.c.free
pub fn save(self: M3d, quality: Quality, flags: Flags) Error![]u8 {
var size: u32 = 0;
return if (c.m3d_save(
self.handle,
@intFromEnum(quality),
@as(c_int, @bitCast(flags)),
&size,
)) |res|
res[0..size]
else
return intToError(self.errCode());
}
pub fn frame(self: M3d, action_id: u32, frame_id: u32, skeleton: []Transform) Error![]Transform {
return if (c.m3d_frame(self.handle, action_id, frame_id, skeleton.ptr)) |res|
res[0..self.handle.numbone]
else
intToError(self.errCode());
}
pub fn pose(self: M3d, action_id: u32, msec: u32) Error![]Bone {
return if (c.m3d_pose(self.handle, action_id, msec)) |res|
res[0..self.handle.numbone]
else
intToError(self.errCode());
}
pub fn name(self: M3d) [:0]const u8 {
return std.mem.span(self.handle.name);
}
pub fn license(self: M3d) [:0]const u8 {
return std.mem.span(self.handle.license);
}
pub fn author(self: M3d) [:0]const u8 {
return std.mem.span(self.handle.author);
}
pub fn description(self: M3d) [:0]const u8 {
return std.mem.span(self.handle.desc);
}
pub fn scale(self: M3d) f32 {
return self.handle.scale;
}
pub fn preview(self: M3d) InlineAsset {
return self.handle.preview;
}
pub fn textures(self: M3d) []TextureData {
return self.handle.texture[0..self.handle.numtexture];
}
pub fn materials(self: M3d) []Material {
return self.handle.material[0..self.handle.nummaterial];
}
pub fn errCode(self: M3d) c_int {
return self.handle.errcode;
}
pub const TextureIndex = c.m3d_texturedata_t;
pub const TextureData = c.m3d_texturedata_t;
pub const Weight = c.m3d_weight_t;
pub const Skin = c.m3d_skin_t;
pub const Bone = c.m3d_bone_t;
pub const Vertex = c.m3d_vertex_t;
pub const Material = c.m3d_material_t;
pub const Face = c.m3d_face_t;
pub const VoxelItem = c.m3d_voxelitem_t;
pub const VoxelType = c.m3d_voxeltype_t;
pub const Voxel = c.m3d_voxel_t;
pub const ShapeCommand = c.m3d_shapecommand_t;
pub const Shape = c.m3d_shape_t;
pub const Label = c.m3d_label_t;
pub const Transform = c.m3d_transform_t;
pub const Frame = c.m3d_frame_t;
pub const Action = c.m3d_action_t;
pub const InlineAsset = c.m3d_inlinedasset_t;
pub const ReadFn = *const fn (filename: [*c]u8, size: [*c]c_uint) callconv(.C) [*c]u8;
pub const FreeFn = *const fn (ptr: ?*anyopaque) callconv(.C) void;
pub const Quality = enum(u2) {
// export with -128 to 127 coordinate precision
int8 = c.M3D_EXP_INT8,
// export with -32768 to 32767 precision
int16 = c.M3D_EXP_INT16,
// export with 32 bit floating point precision
float = c.M3D_EXP_FLOAT,
// export with 64 bit floatint point precision
double = c.M3D_EXP_DOUBLE,
};
pub const Flags = packed struct(u32) {
// don't export color map
nocmap: bool = false,
// don't export materials
nomaterial: bool = false,
// don't export model face
noface: bool = false,
// don't export normal vectors
nonormal: bool = false,
// don't export texture UV
notxtcrd: bool = false,
// flip V in texture UVs
fliptxtcrd: bool = false,
// don't recalculate coordinates
norecalc: bool = false,
// the input is left-handed
idosuck: bool = false,
// don't export skeleton
nobone: bool = false,
// no animation nor skeleton saved
noaction: bool = false,
// inline assets into the model
inline_assets: bool = false,
// export unknown chunks too
extra: bool = false,
// export into uncompressed binary
nozlib: bool = false,
// export into ASCII format
ascii: bool = false,
// don't export maximum vertex
novrtmax: bool = false,
_padding: u17 = 0,
};
fn intToError(int: c_int) Error {
return switch (int) {
c.M3D_SUCCESS => unreachable,
c.M3D_ERR_ALLOC => error.OutOfMemory,
c.M3D_ERR_BADFILE => error.BadFile,
c.M3D_ERR_UNIMPL => error.Unimplemented,
c.M3D_ERR_UNKPROP => error.Unknown,
c.M3D_ERR_UNKMESH => error.UnknownMeshRecord,
c.M3D_ERR_UNKIMG => error.UnknownImageFormat,
c.M3D_ERR_UNKFRAME => error.UnknownActionFrame,
c.M3D_ERR_UNKCMD => error.UnknownCommand,
c.M3D_ERR_UNKVOX => error.UnknownVoxel,
c.M3D_ERR_TRUNC => error.Truncated,
c.M3D_ERR_CMAP => error.UnexpectedColorMapCount,
c.M3D_ERR_TMAP => error.UnexpectedTextureMapCount,
c.M3D_ERR_VRTS => error.UnexpectedVerticeCount,
c.M3D_ERR_BONE => error.UnexpectedBoneCount,
c.M3D_ERR_MTRL => error.UnexpectedMaterialCount,
c.M3D_ERR_SHPE => error.UnexpectedShapeCount,
c.M3D_ERR_VOXT => error.UnexpectedVoxelCount,
else => unreachable,
};
}
test {
testing.refAllDeclsRecursive(@This());
var model_file = try std.fs.cwd().openFile(thisDir("/../assets/cube.m3d"), .{});
defer model_file.close();
var model_data = try model_file.readToEndAllocOptions(testing.allocator, 1024, 119, @alignOf(u8), 0);
defer testing.allocator.free(model_data);
const model = M3d.load(model_data, null, null, null) orelse return error.Fail;
defer model.deinit();
try testing.expectEqualStrings(model.name(), "cube.obj");
var out = try model.save(.float, .{});
defer std.c.free(out.ptr);
try testing.expect(out.len >= 119);
}
fn thisDir(comptime suffix: []const u8) []const u8 {
if (suffix[0] != '/') @compileError("suffix must be an absolute path");
return comptime blk: {
const root_dir = std.fs.path.dirname(@src().file) orelse ".";
break :blk root_dir ++ suffix;
};
}