lights rust example

Author: catilac

Cargo.toml

@@ -64,6 +64,10 @@ path = "examples/animated_mesh.rs"
 name = "custom_attribute"
 path = "examples/custom_attribute.rs"
 
+[[example]]
+name = "lights"
+path = "examples/lights.rs"
+
 [profile.wasm-release]
 inherits = "release"
 opt-level = "z"

examples/lights.rs

@@ -0,0 +1,68 @@
+mod glfw;
+
+use glfw::GlfwContext;
+use processing::prelude::*;
+use processing_render::render::command::DrawCommand;
+
+fn main() {
+    match sketch() {
+        Ok(_) => {
+            eprintln!("Sketch completed successfully");
+            exit(0).unwrap();
+        }
+        Err(e) => {
+            eprintln!("Sketch error: {:?}", e);
+            exit(1).unwrap();
+        }
+    };
+}
+
+fn sketch() -> error::Result<()> {
+    let mut glfw_ctx = GlfwContext::new(400, 400)?;
+    init(Config::default())?;
+
+    let width = 400;
+    let height = 400;
+    let scale_factor = 1.0;
+
+    let surface = glfw_ctx.create_surface(width, height, scale_factor)?;
+    let graphics = graphics_create(surface, width, height)?;
+    let box_geo = geometry_box(10.0, 10.0, 10.0)?;
+
+    let point_light = light_create()?;
+
+    graphics_mode_3d(graphics)?;
+    graphics_camera_position(graphics, 100.0, 100.0, 300.0)?;
+    graphics_camera_look_at(graphics, 0.0, 0.0, 0.0)?;
+
+    let mut angle = 0.0;
+
+    while glfw_ctx.poll_events() {
+        graphics_begin_draw(graphics)?;
+
+        graphics_record_command(
+            graphics,
+            DrawCommand::BackgroundColor(bevy::color::Color::srgb(0.18, 0.20, 0.15)),
+        )?;
+
+        graphics_record_command(graphics, DrawCommand::Light(point_light))?;
+
+        graphics_record_command(graphics, DrawCommand::PushMatrix)?;
+        graphics_record_command(graphics, DrawCommand::Translate { x: 25.0, y: 25.0 })?;
+        graphics_record_command(graphics, DrawCommand::Rotate { angle })?;
+        graphics_record_command(graphics, DrawCommand::Geometry(box_geo))?;
+        graphics_record_command(graphics, DrawCommand::PopMatrix)?;
+
+        graphics_record_command(graphics, DrawCommand::PushMatrix)?;
+        graphics_record_command(graphics, DrawCommand::Translate { x: -25.0, y: 20.0 })?;
+        graphics_record_command(graphics, DrawCommand::Scale { x: 1.5, y: 2.0 })?;
+        graphics_record_command(graphics, DrawCommand::Rotate { angle })?;
+        graphics_record_command(graphics, DrawCommand::Geometry(box_geo))?;
+        graphics_record_command(graphics, DrawCommand::PopMatrix)?;
+
+        graphics_end_draw(graphics)?;
+
+        angle += 0.02;
+    }
+    Ok(())
+}