Struct Renderer

pub struct Renderer {
    pub gl: GL,
    pub program: Shader,
    pub camera: Camera,
    pub components: BTreeMap<&'static str, Box<dyn Component>>,
    /* private fields */
}

The Renderer is responsible for drawing on the screen. It handles the Camera and Shaders.

Fields

gl: GL

The WebGl2RenderingContext used by the Renderer.

program: Shader

The Shader used by the Renderer.

camera: Camera

The Camera used by the Renderer.

components: BTreeMap<&'static str, Box<dyn Component>>

Components that can be added to the Renderer.

Implementations

impl Renderer

pub fn new_with_camera(camera: Camera) -> Self

Create a new Renderer with a given Camera.

pub fn new_with_camera_and_program(camera: Camera, program: Shader) -> Self

Create a new Renderer with a given Camera and Shader.

pub fn set_camera(&mut self, camera: Camera)

Set the Camera that the Renderer will use.

pub fn set_shader(&mut self, program: Shader)

Set the Shader that the Renderer will use.

pub fn resize(&mut self, width: f32, height: f32)

Handle screen resizes.

pub fn init_shader(&mut self)

Initialise the uniforms for the current Shader.

pub fn add_texture(&mut self, key: &'static str, texture: Texture)

Add a Texture to the Renderer.

The renderer stores Textures that can be retreived later, via a string slice.

pub fn use_texture(&self, key: &str)

Use the requested Texture.

Sets the currently bound Texture to the one that matches the key. If no such texture is found, a default MAGENTA one is found.

pub fn get_texture(&mut self, key: &str) -> Rc<Texture>

Get the requested Texture, or MAGENTA if none is found.

pub fn begin_draw(&mut self)

Clear the batch queue and start a new batch.

pub fn add_quad(&mut self, quad: &Quad)

Add a Quad to the batching queue.

pub fn begin_layer(&mut self)

Begin a new layer.

A new mesh is added to the batches and subsequent calls are made on this layer.

pub fn delete_layer(&mut self) -> Option<Mesh>

Remove the last layer.

pub fn draw_layer(&self)

Draw the current layer.

pub fn end_draw(&mut self)

Draw all batched geometry.

pub fn clear(&mut self, color: [f32; 4])

Clear the screen with a given Color.

pub fn add_component( &mut self, name: &'static str, component: Box<dyn Component>, )

Add a Component to the Renderer.

pub fn init_components(&mut self)

(Re)Initialize the Components of the Renderer.

pub fn update_components(&mut self, delta_time: f32)

Update the Components of the Renderer.

pub fn get_component<T: 'static + Component>( &self, key: &'static str, ) -> Result<&T, String>

Get a Components using a key, and ty to cast it to a given type.

pub fn get_mut_component<T: 'static + Component>( &mut self, key: &'static str, ) -> Result<&mut T, String>

Get a mutable Components using a key, and ty to cast it to a given type.

pub fn draw_components(&mut self)

Draw the Components of the Renderer.

Trait Implementations

impl Debug for Renderer

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Renderer

fn default() -> Self

Returns the “default value” for a type.