shapemaker 1.1.1

An experimental WASM-capable, generative SVG-based video rendering engine that reacts to MIDI or audio data
Documentation 
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use crate::{ColoredObject, Fill, Filter, ObjectSizes, Region, Toggleable};
use std::{collections::HashMap, fmt::Display};

#[derive(Debug, Clone, Default)]
// #[wasm_bindgen(getter_with_clone)]
pub struct Layer {
    pub object_sizes: ObjectSizes,
    pub objects: HashMap<String, ColoredObject>,
    pub name: String,
    pub hidden: bool,
    pub _render_cache: Option<svg::node::element::Group>,
}

impl Layer {
    pub fn new(name: &str) -> Self {
        Layer {
            object_sizes: ObjectSizes::default(),
            objects: HashMap::new(),
            name: name.to_string(),
            _render_cache: None,
            hidden: false,
        }
    }

    pub fn hide(&mut self) {
        self.hidden = true;
    }

    pub fn show(&mut self) {
        self.hidden = false;
    }

    pub fn toggle(&mut self) {
        self.hidden.toggle();
    }

    pub fn object(&mut self, name: &str) -> &mut ColoredObject {
        self.safe_object(name).unwrap()
    }

    pub fn safe_object(&mut self, name: &str) -> Option<&mut ColoredObject> {
        self.objects.get_mut(name)
    }

    // Flush the render cache.
    pub fn flush(&mut self) {
        self._render_cache = None;
    }

    // Remove all objects.
    pub fn clear(&mut self) {
        self.objects.clear();
        self.flush();
    }

    pub fn replace(&mut self, with: Layer) {
        self.objects.clone_from(&with.objects);
        self.flush();
    }

    pub fn remove_all_objects_in(&mut self, region: &Region) {
        self.objects
            .retain(|_, ColoredObject { object, .. }| !object.region().within(region))
    }

    pub fn paint_all_objects(&mut self, fill: Fill) {
        for obj in self.objects.values_mut() {
            obj.fill = Some(fill);
        }
        self.flush();
    }

    pub fn filter_all_objects(&mut self, filter: Filter) {
        for obj in self.objects.values_mut() {
            obj.filters.push(filter)
        }
        self.flush();
    }

    pub fn move_all_objects(&mut self, dx: i32, dy: i32) {
        self.objects
            .iter_mut()
            .for_each(|(_, ColoredObject { object, .. })| object.translate(dx, dy));
        self.flush();
    }

    pub fn add_object<N: Display>(&mut self, name: N, object: ColoredObject) {
        let name_str = format!("{}", name);

        if self.objects.contains_key(&name_str) {
            panic!("object {} already exists in layer {}", name_str, self.name);
        }

        self.set_object(name_str, object);
    }

    pub fn set_object<N: Display>(&mut self, name: N, object: ColoredObject) {
        let name_str = format!("{}", name);

        self.objects.insert(name_str, object);
        self.flush();
    }

    pub fn filter_object(&mut self, name: &str, filter: Filter) -> Result<(), String> {
        self.objects
            .get_mut(name)
            .ok_or(format!("Object '{}' not found", name))?
            .filters
            .push(filter);

        self.flush();
        Ok(())
    }

    pub fn remove_object(&mut self, name: &str) {
        self.objects.remove(name);
        self.flush();
    }

    pub fn replace_object(&mut self, name: &str, object: ColoredObject) {
        self.remove_object(name);
        self.add_object(name, object);
    }
}