438 lines
16 KiB
Rust
438 lines
16 KiB
Rust
use std::{
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cell::RefCell,
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collections::{HashMap, HashSet},
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rc::Rc,
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};
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mod gui;
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use clay_layout::render_commands::RenderCommandConfig;
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use gui::GUI;
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use raylib::{
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RaylibHandle, RaylibThread,
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color::Color,
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ffi::{MouseButton, TextLength, Vector2},
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prelude::{Font, RaylibDraw, RaylibDrawHandle},
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text::RaylibFont,
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texture::Texture2D,
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};
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struct FontStore {
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font: String,
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fonts: HashMap<i32, Rc<Font>>,
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fonts_to_be_loaded: HashSet<i32>,
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}
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impl FontStore {
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// const SIZE_PARAGRAPH: f32 = 20.;
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// const SIZE_HEADER: f32 = 30.;
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// const MOD_SUBTEXT: f32 = 0.5;
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pub fn new(name: impl Into<String>) -> Self {
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Self {
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fonts: HashMap::new(),
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font: name.into(),
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fonts_to_be_loaded: HashSet::new(),
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}
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}
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pub fn get(&mut self, size: i32) -> Option<Rc<Font>> {
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let size = size.max(1);
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if let Some(font) = self.fonts.get(&size) {
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Some(font.clone())
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} else {
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self.fonts_to_be_loaded.insert(size);
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None
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}
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}
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// pub fn get_no_load(&self, size: i32) -> Option<Rc<Font>> {
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// if let Some(font) = self.fonts.get(&size) {
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// Some(font.clone())
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// } else {
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// None
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// }
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// }
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pub fn load_fonts(
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&mut self,
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handle: &mut RaylibHandle,
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thread: &RaylibThread,
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) -> Result<bool, String> {
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let invalidate = self.fonts_to_be_loaded.len() > 0;
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if invalidate {
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for size in self.fonts_to_be_loaded.clone() {
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assert!(size != 0, "HOW IS THIS ZERO?");
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println!("Loading {} in {size}px", self.font);
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let font = Rc::new(handle.load_font_ex(&thread, &self.font, size, None)?);
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self.fonts.insert(size, font.clone());
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}
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self.fonts_to_be_loaded.clear();
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}
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Ok(invalidate)
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}
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pub fn text(
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&mut self,
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d: &mut RaylibDrawHandle,
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text: &str,
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x: f32,
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y: f32,
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size: f32,
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letter_spacing: u16,
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color: Option<Color>,
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) {
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// Program crashes at size=0.
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let size = if size == 0. { 0.1 } else { size };
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if let Some(font) = self.get(size as i32) {
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d.draw_text_ex(
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font.as_ref(),
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text,
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Vector2 { x, y },
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size,
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letter_spacing.into(),
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color.unwrap_or(Color::BLUE),
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);
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}
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}
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}
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#[inline]
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fn clay2ray(c: clay_layout::color::Color) -> Color {
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Color {
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r: c.r as u8,
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g: c.g as u8,
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b: c.b as u8,
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a: c.a as u8,
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}
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}
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fn main() -> Result<(), String> {
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println!("Openbirch GUI");
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let (mut rl, thread) = raylib::init()
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.size(640, 480)
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.title("Openbirch GUI")
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.msaa_4x()
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.resizable()
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.build();
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let mut clay = clay_layout::Clay::new((640., 480.).into());
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let font_store = Rc::new(RefCell::new(FontStore::new("adamina.ttf")));
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let font_store_math = Rc::new(RefCell::new(FontStore::new("xits-italic.ttf")));
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let mut gui = GUI::new();
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let mut previous_left_button = false;
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let mut previous_right_button = false;
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// stupid fucking 'static closures
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let font_store_clone = font_store.clone();
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let font_store_math_clone = font_store_math.clone();
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clay.set_measure_text_function(move |text, config| {
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let mut text_size = clay_layout::math::Dimensions::new(0., 0.);
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let mut max_text_width: f32 = 0.;
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let mut line_text_width: f32 = 0.;
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let font_store = match config.font_id {
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0 => font_store_clone.clone(),
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1 => font_store_math_clone.clone(),
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_ => panic!("Unknown font {}", config.font_id),
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};
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let font = if let Some(font) = font_store.borrow_mut().get(config.font_size.into()) {
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font
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} else {
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// println!("Font not cached. Returning: {:?}", text_size);
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return text_size;
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};
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let scale_factor = config.font_size as f32 / font.baseSize as f32;
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let text_height = config.font_size as f32;
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for char in text.chars() {
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if char == '\n' {
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max_text_width = max_text_width.max(line_text_width);
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line_text_width = 0.;
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continue;
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}
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let idx = char as u32 - 32;
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line_text_width += if let Some(glyph) = font.chars().get(idx as usize) {
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if glyph.advanceX > 0 {
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glyph.advanceX as f32
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} else {
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font.get_glyph_atlas_rec(char).width + glyph.offsetX as f32
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}
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} else {
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0 as f32
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} + config.letter_spacing as f32;
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}
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max_text_width = max_text_width.max(line_text_width);
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text_size.width = max_text_width * scale_factor;
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text_size.height = text_height;
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text_size
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// unsafe {
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// std::mem::transmute(font.measure_text(text, config.font_size as f32, config.letter_spacing as f32 + 1.))
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// }
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});
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rl.set_target_fps(60);
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rl.set_exit_key(None);
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let mut debug = false;
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while !rl.window_should_close() {
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if rl.is_window_resized() {
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let size = (rl.get_screen_width() as f32, rl.get_screen_height() as f32);
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clay.layout_dimensions(size.into());
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println!("Resized window to {:?}", size);
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}
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let left_button = rl.is_mouse_button_down(MouseButton::MOUSE_BUTTON_LEFT);
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let right_button = rl.is_mouse_button_down(MouseButton::MOUSE_BUTTON_LEFT);
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{
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if font_store.borrow_mut().load_fonts(&mut rl, &thread)?
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|| font_store_math.borrow_mut().load_fonts(&mut rl, &thread)?
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{
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clay.reset_measure_text_cache();
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}
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}
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if rl.is_key_down(raylib::ffi::KeyboardKey::KEY_RIGHT_ALT)
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&& rl.is_key_pressed(raylib::ffi::KeyboardKey::KEY_D)
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{
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debug = !clay.debug_mode_enabled();
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clay.reset_measure_text_cache();
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clay.enable_debug_mode(debug);
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println!("Toggled debug mode to {debug}");
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}
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clay.set_debug_highlight((180, 142, 173, 150).into());
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clay.update_scroll_containers(
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false,
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unsafe { std::mem::transmute(rl.get_mouse_wheel_move_v()) },
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rl.get_frame_time(),
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);
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clay.pointer_state(
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unsafe { std::mem::transmute(rl.get_mouse_position()) },
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left_button,
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);
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let render_commands = gui.render(
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&clay,
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(left_button, left_button && !previous_left_button),
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(right_button, right_button && !previous_right_button),
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(rl.get_char_pressed(), rl.get_key_pressed_number()),
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rl.get_time()
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);
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let mut d = rl.begin_drawing(&thread);
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d.clear_background(Color::WHITE);
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for command in render_commands {
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match command.config {
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RenderCommandConfig::Rectangle(rectangle) => {
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// println!(
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// "RECT!!! {}: {:?}\n{:?}\n\n",
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// command.id, command.bounding_box, rectangle
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// );
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//
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d.draw_rectangle_rounded(
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raylib::ffi::Rectangle {
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x: command.bounding_box.x,
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y: command.bounding_box.y,
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width: command.bounding_box.width,
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height: command.bounding_box.height,
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},
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rectangle.corner_radii.top_left,
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8,
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clay2ray(rectangle.color),
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);
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}
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RenderCommandConfig::Text(text) => {
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let font = match text.font_id {
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0 => font_store.clone(),
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1 => font_store_math.clone(),
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_ => panic!("Unknown font {}", text.font_id),
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};
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font.borrow_mut().text(
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&mut d,
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text.text,
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command.bounding_box.x,
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command.bounding_box.y,
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text.font_size as f32,
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text.letter_spacing,
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Some(clay2ray(text.color)),
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);
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}
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RenderCommandConfig::ScissorStart() => unsafe {
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raylib::ffi::BeginScissorMode(
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command.bounding_box.x as i32,
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command.bounding_box.y as i32,
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command.bounding_box.width as i32,
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command.bounding_box.height as i32,
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);
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},
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RenderCommandConfig::ScissorEnd() => unsafe {
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raylib::ffi::EndScissorMode();
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},
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RenderCommandConfig::Border(border) => {
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// Left border
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if border.width.left > 0 {
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d.draw_rectangle(
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command.bounding_box.x as i32,
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(command.bounding_box.y + border.corner_radii.top_left) as i32,
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border.width.left as i32,
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(command.bounding_box.height
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- border.corner_radii.top_left
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- border.corner_radii.bottom_left)
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as i32,
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clay2ray(border.color),
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);
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}
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// Right border
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if border.width.right > 0 {
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d.draw_rectangle(
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(command.bounding_box.x + command.bounding_box.width
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- border.width.right as f32) as i32,
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(command.bounding_box.y + border.corner_radii.top_right) as i32,
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border.width.right as i32,
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(command.bounding_box.height
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- border.corner_radii.top_right
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- border.corner_radii.bottom_right)
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as i32,
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clay2ray(border.color),
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);
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}
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// Top border
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if border.width.top > 0 {
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d.draw_rectangle(
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(command.bounding_box.x + border.corner_radii.top_left) as i32,
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(command.bounding_box.y) as i32,
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(command.bounding_box.width
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- border.corner_radii.top_left
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- border.corner_radii.top_right) as i32,
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(border.width.top) as i32,
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clay2ray(border.color),
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);
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}
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// Top border
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if border.width.bottom > 0 {
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d.draw_rectangle(
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(command.bounding_box.x + border.corner_radii.bottom_left) as i32,
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(command.bounding_box.y + command.bounding_box.height
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- border.width.bottom as f32) as i32,
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(command.bounding_box.width
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- border.corner_radii.bottom_left
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- border.corner_radii.bottom_right)
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as i32,
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border.width.bottom as i32,
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clay2ray(border.color),
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);
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}
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// Top left corner
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if border.corner_radii.top_left > 0. {
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d.draw_ring(
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Vector2 {
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x: command.bounding_box.x + border.corner_radii.top_left,
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y: command.bounding_box.y + border.corner_radii.top_left,
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},
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border.corner_radii.top_left - border.width.top as f32,
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border.corner_radii.top_left,
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180.,
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270.,
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10,
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clay2ray(border.color),
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);
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}
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// Top right corner
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if border.corner_radii.top_right > 0. {
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d.draw_ring(
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Vector2 {
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x: command.bounding_box.x + command.bounding_box.width
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- border.corner_radii.top_right,
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y: command.bounding_box.y + border.corner_radii.top_right,
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},
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border.corner_radii.top_right - border.width.top as f32,
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border.corner_radii.top_right,
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270.,
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360.,
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10,
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clay2ray(border.color),
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);
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}
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// Bottom left
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if border.corner_radii.bottom_left > 0. {
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d.draw_ring(
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Vector2 {
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x: command.bounding_box.x + border.corner_radii.bottom_left,
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y: command.bounding_box.y + command.bounding_box.height
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- border.corner_radii.bottom_left,
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},
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border.corner_radii.bottom_left - border.width.top as f32,
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border.corner_radii.bottom_left,
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90.,
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180.,
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10,
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clay2ray(border.color),
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);
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}
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// Bottom right
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if border.corner_radii.bottom_right > 0. {
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d.draw_ring(
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Vector2 {
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x: command.bounding_box.x + command.bounding_box.width
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- border.corner_radii.bottom_right,
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y: command.bounding_box.y + command.bounding_box.height
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- border.corner_radii.bottom_right,
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},
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border.corner_radii.bottom_right - border.width.bottom as f32,
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border.corner_radii.bottom_right,
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0.,
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90.,
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10,
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clay2ray(border.color),
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);
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}
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}
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RenderCommandConfig::None() => {}
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RenderCommandConfig::Image(image) => {
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let texture: &Texture2D = unsafe {
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std::mem::transmute::<*const std::ffi::c_void, *const Texture2D>(image.data)
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.as_ref()
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.unwrap()
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};
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d.draw_texture_ex(
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texture,
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Vector2 {
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x: command.bounding_box.x,
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y: command.bounding_box.y,
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},
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0.,
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command.bounding_box.width / image.dimensions.width,
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clay2ray(image.background_color),
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);
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}
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_ => panic!("Unimplemented {:#?}", command),
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}
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}
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previous_left_button = left_button;
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previous_right_button = right_button;
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}
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Ok(())
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}
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