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62 lines
2.2 KiB
62 lines
2.2 KiB
6 years ago
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use crate::vertex_2d::{ColoredVertex2D, Vertex2D};
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use std::sync::Arc;
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use std::collections::HashMap;
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use crate::canvas::Drawable;
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pub struct CanvasFrame {
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pub colored_drawables: Vec<ColoredVertex2D>,
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pub textured_drawables: HashMap<Arc<u32>, Vec<Vec<Vertex2D>>>,
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pub image_drawables: HashMap<Arc<u32>, Vec<Vec<Vertex2D>>>,
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}
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impl CanvasFrame {
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pub fn new() -> CanvasFrame {
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CanvasFrame {
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colored_drawables: vec![],
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textured_drawables: Default::default(),
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image_drawables: Default::default(),
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}
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}
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// Accumulates the drawables vertices and colors
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pub fn draw(&mut self, drawable: &dyn Drawable) {
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match drawable.get_texture_handle() {
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Some(handle) => {
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self.textured_drawables
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.entry(handle.clone())
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.or_insert(Vec::new())
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.push(drawable.get_vertices().iter().map(|n|
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Vertex2D {
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position: [n.0, n.1],
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}
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).collect::<Vec<Vertex2D>>());
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}
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None => {
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match drawable.get_image_handle() {
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Some(handle) => {
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self.image_drawables
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.entry(handle.clone())
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.or_insert(Vec::new())
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.push(drawable.get_vertices().iter().map(|n|
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Vertex2D {
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position: [n.0, n.1],
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}
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).collect());
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}
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None => {
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let colors = drawable.get_color();
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self.colored_drawables.extend(
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drawable.get_vertices().iter().map(|n|
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ColoredVertex2D {
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position: [n.0, n.1],
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color: [colors.0, colors.1, colors.2, colors.3],
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}
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)
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);
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}
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}
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}
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}
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}
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}
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