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72 lines (59 loc) · 2.33 KB
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Copy pathcustom_attribute.rs
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72 lines (59 loc) · 2.33 KB
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use processing_glfw::GlfwContext;
use bevy::math::{Vec3, Vec4};
use processing::prelude::*;
use processing_render::geometry::{AttributeFormat, Topology};
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(600, 600, false)?;
init(Config::default())?;
let width = 600;
let height = 600;
let surface = glfw_ctx.create_surface(width, height, false)?;
let graphics = graphics_create(surface, width, height, TextureFormat::Rgba16Float)?;
let custom_attr = geometry_attribute_create("Custom", AttributeFormat::Float)?;
let layout = geometry_layout_create()?;
geometry_layout_add_position(layout)?;
geometry_layout_add_normal(layout)?;
geometry_layout_add_color(layout)?;
geometry_layout_add_attribute(layout, custom_attr)?;
let mesh = geometry_create_with_layout(layout, Topology::LineStrip)?;
geometry_color(mesh, Vec4::new(1.0, 0.0, 0.0, 1.0))?;
geometry_normal(mesh, Vec3::new(0.0, 0.0, 1.0))?;
geometry_attribute_float(mesh, custom_attr, 0.0)?;
geometry_vertex(mesh, Vec3::new(-50.0, -50.0, 0.0))?;
geometry_color(mesh, Vec4::new(0.0, 1.0, 0.0, 1.0))?;
geometry_attribute_float(mesh, custom_attr, 0.5)?;
geometry_vertex(mesh, Vec3::new(50.0, -50.0, 0.0))?;
geometry_color(mesh, Vec4::new(0.0, 0.0, 1.0, 1.0))?;
geometry_attribute_float(mesh, custom_attr, 1.0)?;
geometry_vertex(mesh, Vec3::new(0.0, 50.0, 0.0))?;
geometry_index(mesh, 0)?;
geometry_index(mesh, 1)?;
geometry_index(mesh, 2)?;
geometry_index(mesh, 0)?;
graphics_mode_3d(graphics)?;
transform_set_position(graphics, Vec3::new(0.0, 0.0, 200.0))?;
transform_look_at(graphics, Vec3::new(0.0, 0.0, 0.0))?;
while glfw_ctx.poll_events() {
graphics_begin_draw(graphics)?;
graphics_record_command(
graphics,
DrawCommand::BackgroundColor(bevy::color::Color::srgb(0.1, 0.1, 0.12)),
)?;
graphics_record_command(graphics, DrawCommand::Geometry(mesh))?;
graphics_end_draw(graphics)?;
}
Ok(())
}