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use processing_glfw::GlfwContext;

use bevy::math::{Vec2, Vec3};

use processing::prelude::*;

use processing_render::render::command::DrawCommand;

fn main() {

sketch().unwrap();

exit(0).unwrap();

}

fn sketch() -> error::Result<()> {

let width = 1200;

let height = 700;

let mut glfw_ctx = GlfwContext::new(width, height, false)?;

init(Config::default())?;

let surface = glfw_ctx.create_surface(width, height, false)?;

let graphics = graphics_create(surface, width, height, TextureFormat::Rgba16Float)?;

graphics_mode_3d(graphics)?;

transform_set_position(graphics, Vec3::new(0.0, 0.0, 800.0))?;

transform_look_at(graphics, Vec3::new(0.0, 0.0, 0.0))?;

let dir_light =

light_create_directional(graphics, bevy::color::Color::srgb(0.3, 0.3, 0.4), 2000.0)?;

transform_set_position(dir_light, Vec3::new(200.0, 300.0, 500.0))?;

transform_look_at(dir_light, Vec3::new(0.0, 0.0, 0.0))?;

let glow = material_create_pbr()?;

material_set(glow, "roughness", shader_value::ShaderValue::Float(0.3))?;

material_set(glow, "metallic", shader_value::ShaderValue::Float(0.5))?;

material_set(

glow,

"emissive",

shader_value::ShaderValue::Float4([2.0, 0.5, 3.0, 1.0]),

)?;

graphics_record_command(graphics, DrawCommand::TextSize(120.0))?;

graphics_record_command(graphics, DrawCommand::TextStyle(TextStyle::Bold))?;

// measure width to center the mesh on the origin

let w = graphics_text_width(graphics, "Processing")?;

let mesh = graphics_text_to_model(graphics, "Processing", -w / 2.0, 0.0, 40.0)?;

let geom = geometry_create_from_mesh(mesh)?;

let mut t: f32 = 0.0;

while glfw_ctx.poll_events() {

graphics_begin_draw(graphics)?;

graphics_record_command(

graphics,

DrawCommand::BackgroundColor(bevy::color::Color::srgb(0.02, 0.02, 0.03)),

)?;

graphics_record_command(

graphics,

DrawCommand::Fill(bevy::color::Color::srgb(0.8, 0.3, 1.0)),

)?;

graphics_record_command(graphics, DrawCommand::Material(glow))?;

graphics_record_command(graphics, DrawCommand::PushMatrix)?;

graphics_record_command(

graphics,

DrawCommand::Scale(Vec2::new(15.0, 15.0).extend(1.0)),

)?;

graphics_record_command(

graphics,

DrawCommand::Rotate {

angle: t * 0.3,

axis: Vec3::Z,

)?;

graphics_record_command(graphics, DrawCommand::Geometry(geom))?;

graphics_record_command(graphics, DrawCommand::PopMatrix)?;

graphics_end_draw(graphics)?;

t += 0.016;

}

material_destroy(glow)?;

Ok(())

}