Pycessing (#31)

Co-authored-by: charlotte 🌸 <[email protected]>

Author: catilac

Cargo.lock

@@ -21,6 +21,7 @@ bevy = { git = "https://github.com/bevyengine/bevy", branch = "main", no-default
     "bevy_color",
 ] }
 processing = { path = "." }
+processing_pyo3 = { path = "crates/processing_pyo3" }
 processing_render = { path = "crates/processing_render" }
 
 [dependencies]

Cargo.toml

@@ -0,0 +1,72 @@
+/target
+
+# Byte-compiled / optimized / DLL files
+__pycache__/
+.pytest_cache/
+*.py[cod]
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+.venv/
+env/
+bin/
+build/
+develop-eggs/
+dist/
+eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+include/
+man/
+venv/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+pip-selfcheck.json
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.cache
+nosetests.xml
+coverage.xml
+
+# Translations
+*.mo
+
+# Mr Developer
+.mr.developer.cfg
+.project
+.pydevproject
+
+# Rope
+.ropeproject
+
+# Django stuff:
+*.log
+*.pot
+
+.DS_Store
+
+# Sphinx documentation
+docs/_build/
+
+# PyCharm
+.idea/
+
+# VSCode
+.vscode/
+
+# Pyenv
+.python-version

crates/processing_pyo3/.gitignore

@@ -0,0 +1,19 @@
+[package]
+name = "processing_pyo3"
+version = "0.1.0"
+edition = "2024"
+
+[lints]
+workspace = true
+
+[lib]
+name = "pycessing"
+crate-type = ["cdylib"]
+
+[dependencies]
+pyo3 = "0.27.0"
+processing = { workspace = true }
+glfw = "0.60.0"
+
+[target.'cfg(target_os = "linux")'.dependencies]
+glfw = { version = "0.60.0", features = ["wayland"] }

crates/processing_pyo3/Cargo.toml

@@ -0,0 +1,19 @@
+# Pycessing
+
+Prototype for python bindings to libprocessing
+
+## To Get Started
+
+### Install venv and maturin 
+Follow these [installation instructions](https://pyo3.rs/v0.27.2/getting-started.html)
+
+### Running code
+```
+$ maturin develop
+#
+# ...
+#
+$ python
+>>> import pycessing
+>>> pycessing.size(500, 500)
+```

crates/processing_pyo3/README.md

@@ -0,0 +1,16 @@
+[build-system]
+requires = ["maturin>=1.10,<2.0"]
+build-backend = "maturin"
+
+[project]
+name = "pycessing"
+requires-python = ">=3.8"
+classifiers = [
+    "Programming Language :: Rust",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Programming Language :: Python :: Implementation :: PyPy",
+]
+dynamic = ["version"]
+
+[tool.maturin]
+manifest-path = "Cargo.toml"

crates/processing_pyo3/pyproject.toml

@@ -0,0 +1,69 @@
+/// Minimal GLFW helper for Processing examples
+use glfw::{Glfw, GlfwReceiver, PWindow, WindowEvent, WindowMode};
+use processing::prelude::error::Result;
+
+pub struct GlfwContext {
+    glfw: Glfw,
+    window: PWindow,
+    events: GlfwReceiver<(f64, WindowEvent)>,
+}
+
+impl GlfwContext {
+    pub fn new(width: u32, height: u32) -> Result<Self> {
+        let mut glfw = glfw::init(glfw::fail_on_errors).unwrap();
+
+        glfw.window_hint(glfw::WindowHint::ClientApi(glfw::ClientApiHint::NoApi));
+        glfw.window_hint(glfw::WindowHint::Visible(false));
+
+        let (mut window, events) = glfw
+            .create_window(width, height, "Processing", WindowMode::Windowed)
+            .unwrap();
+
+        window.set_all_polling(true);
+        window.show();
+
+        Ok(Self {
+            glfw,
+            window,
+            events,
+        })
+    }
+
+    #[cfg(target_os = "macos")]
+    pub fn get_window(&self) -> u64 {
+        self.window.get_cocoa_window() as u64
+    }
+
+    #[cfg(target_os = "windows")]
+    pub fn get_window(&self) -> u64 {
+        self.window.get_win32_window() as u64
+    }
+
+    #[cfg(target_os = "linux")]
+    pub fn get_window(&self) -> u64 {
+        self.window.get_wayland_window() as u64
+    }
+
+    #[cfg(not(target_os = "linux"))]
+    pub fn get_display(&self) -> u64 {
+        0
+    }
+
+    #[cfg(target_os = "linux")]
+    pub fn get_display(&self) -> u64 {
+        self.glfw.get_wayland_display() as u64
+    }
+
+    pub fn poll_events(&mut self) -> bool {
+        self.glfw.poll_events();
+
+        for (_, event) in glfw::flush_messages(&self.events) {
+            match event {
+                WindowEvent::Close => return false,
+                _ => {}
+            }
+        }
+
+        !self.window.should_close()
+    }
+}

crates/processing_pyo3/src/glfw.rs

@@ -0,0 +1,40 @@
+mod glfw;
+use pyo3::prelude::*;
+
+#[pymodule]
+mod pycessing {
+    use crate::glfw::GlfwContext;
+    use processing::prelude::*;
+    use pyo3::prelude::*;
+
+    /// create surface
+    #[pyfunction]
+    fn size(width: u32, height: u32) -> PyResult<String> {
+        let mut glfw_ctx = GlfwContext::new(400, 400).unwrap();
+        init().unwrap();
+
+        let window_handle = glfw_ctx.get_window();
+        let display_handle = glfw_ctx.get_display();
+        let surface = surface_create(window_handle, display_handle, width, height, 1.0).unwrap();
+
+        while glfw_ctx.poll_events() {
+            begin_draw(surface).unwrap();
+
+            record_command(
+                surface,
+                DrawCommand::Rect {
+                    x: 10.0,
+                    y: 10.0,
+                    w: 100.0,
+                    h: 100.0,
+                    radii: [0.0, 0.0, 0.0, 0.0],
+                },
+            )
+            .unwrap();
+
+            end_draw(surface).unwrap();
+        }
+
+        Ok("OK".to_string())
+    }
+}