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graphite2 / node-graph /gcore /src /transform.rs

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use crate::Artboard;
use crate::math::bbox::AxisAlignedBbox;
pub use crate::vector::ReferencePoint;
use core::f64;
use glam::{DAffine2, DMat2, DVec2};

pub trait Transform {
	fn transform(&self) -> DAffine2;
	fn local_pivot(&self, pivot: DVec2) -> DVec2 {
		pivot
	}
	fn decompose_scale(&self) -> DVec2 {
		DVec2::new(
			self.transform().transform_vector2((1., 0.).into()).length(),
			self.transform().transform_vector2((0., 1.).into()).length(),
		)
	}
}

pub trait TransformMut: Transform {
	fn transform_mut(&mut self) -> &mut DAffine2;
	fn translate(&mut self, offset: DVec2) {
		*self.transform_mut() = DAffine2::from_translation(offset) * self.transform();
	}
}

// Implementation for references to anything that implements Transform
impl<T: Transform> Transform for &T {
	fn transform(&self) -> DAffine2 {
		(*self).transform()
	}
}

// Implementations for Artboard
impl Transform for Artboard {
	fn transform(&self) -> DAffine2 {
		DAffine2::from_translation(self.location.as_dvec2())
	}
	fn local_pivot(&self, pivot: DVec2) -> DVec2 {
		self.location.as_dvec2() + self.dimensions.as_dvec2() * pivot
	}
}

// Implementations for DAffine2
impl Transform for DAffine2 {
	fn transform(&self) -> DAffine2 {
		*self
	}
}
impl TransformMut for DAffine2 {
	fn transform_mut(&mut self) -> &mut DAffine2 {
		self
	}
}

// Implementations for Footprint
impl Transform for Footprint {
	fn transform(&self) -> DAffine2 {
		self.transform
	}
}
impl TransformMut for Footprint {
	fn transform_mut(&mut self) -> &mut DAffine2 {
		&mut self.transform
	}
}

#[derive(Debug, Clone, Copy, dyn_any::DynAny, PartialEq, serde::Serialize, serde::Deserialize)]
pub enum RenderQuality {
	/// Low quality, fast rendering
	Preview,
	/// Ensure that the render is available with at least the specified quality
	/// A value of 0.5 means that the render is available with at least 50% of the final image resolution
	Scale(f32),
	/// Flip a coin to decide if the render should be available with the current quality or done at full quality
	/// This should be used to gradually update the render quality of a cached node
	Probability(f32),
	/// Render at full quality
	Full,
}
#[derive(Debug, Clone, Copy, dyn_any::DynAny, PartialEq, serde::Serialize, serde::Deserialize)]
pub struct Footprint {
	/// Inverse of the transform which will be applied to the node output during the rendering process
	pub transform: DAffine2,
	/// Resolution of the target output area in pixels
	pub resolution: glam::UVec2,
	/// Quality of the render, this may be used by caching nodes to decide if the cached render is sufficient
	pub quality: RenderQuality,
}

impl Default for Footprint {
	fn default() -> Self {
		Self::DEFAULT
	}
}

impl Footprint {
	pub const DEFAULT: Self = Self {
		transform: DAffine2::IDENTITY,
		resolution: glam::UVec2::new(1920, 1080),
		quality: RenderQuality::Full,
	};

	pub const BOUNDLESS: Self = Self {
		transform: DAffine2 {
			matrix2: DMat2::from_diagonal(DVec2::splat(f64::INFINITY)),
			translation: DVec2::ZERO,
		},
		resolution: glam::UVec2::new(0, 0),
		quality: RenderQuality::Full,
	};

	pub fn viewport_bounds_in_local_space(&self) -> AxisAlignedBbox {
		let inverse = self.transform.inverse();
		let start = inverse.transform_point2((0., 0.).into());
		let end = inverse.transform_point2(self.resolution.as_dvec2());
		AxisAlignedBbox { start, end }
	}

	pub fn scale(&self) -> DVec2 {
		self.transform.decompose_scale()
	}

	pub fn offset(&self) -> DVec2 {
		self.transform.transform_point2(DVec2::ZERO)
	}
}

impl From<()> for Footprint {
	fn from(_: ()) -> Self {
		Footprint::default()
	}
}

impl std::hash::Hash for Footprint {
	fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
		self.transform.to_cols_array().iter().for_each(|x| x.to_le_bytes().hash(state));
		self.resolution.hash(state)
	}
}

pub trait ApplyTransform {
	fn apply_transform(&mut self, modification: &DAffine2);
}
impl<T: TransformMut> ApplyTransform for T {
	fn apply_transform(&mut self, &modification: &DAffine2) {
		*self.transform_mut() = self.transform() * modification
	}
}
impl ApplyTransform for () {
	fn apply_transform(&mut self, &_modification: &DAffine2) {}
}

	use crate::Artboard;
	use crate::math::bbox::AxisAlignedBbox;
	pub use crate::vector::ReferencePoint;
	use core::f64;
	use glam::{DAffine2, DMat2, DVec2};

	pub trait Transform {
	fn transform(&self) -> DAffine2;
	fn local_pivot(&self, pivot: DVec2) -> DVec2 {
	pivot
	}
	fn decompose_scale(&self) -> DVec2 {
	DVec2::new(
	self.transform().transform_vector2((1., 0.).into()).length(),
	self.transform().transform_vector2((0., 1.).into()).length(),
	)
	}
	}

	pub trait TransformMut: Transform {
	fn transform_mut(&mut self) -> &mut DAffine2;
	fn translate(&mut self, offset: DVec2) {
	self.transform_mut() = DAffine2::from_translation(offset) self.transform();
	}
	}

	// Implementation for references to anything that implements Transform
	impl<T: Transform> Transform for &T {
	fn transform(&self) -> DAffine2 {
	(*self).transform()
	}
	}

	// Implementations for Artboard
	impl Transform for Artboard {
	fn transform(&self) -> DAffine2 {
	DAffine2::from_translation(self.location.as_dvec2())
	}
	fn local_pivot(&self, pivot: DVec2) -> DVec2 {
	self.location.as_dvec2() + self.dimensions.as_dvec2() * pivot
	}
	}

	// Implementations for DAffine2
	impl Transform for DAffine2 {
	fn transform(&self) -> DAffine2 {
	*self
	}
	}
	impl TransformMut for DAffine2 {
	fn transform_mut(&mut self) -> &mut DAffine2 {
	self
	}
	}

	// Implementations for Footprint
	impl Transform for Footprint {
	fn transform(&self) -> DAffine2 {
	self.transform
	}
	}
	impl TransformMut for Footprint {
	fn transform_mut(&mut self) -> &mut DAffine2 {
	&mut self.transform
	}
	}

	#[derive(Debug, Clone, Copy, dyn_any::DynAny, PartialEq, serde::Serialize, serde::Deserialize)]
	pub enum RenderQuality {
	/// Low quality, fast rendering
	Preview,
	/// Ensure that the render is available with at least the specified quality
	/// A value of 0.5 means that the render is available with at least 50% of the final image resolution
	Scale(f32),
	/// Flip a coin to decide if the render should be available with the current quality or done at full quality
	/// This should be used to gradually update the render quality of a cached node
	Probability(f32),
	/// Render at full quality
	Full,
	}
	#[derive(Debug, Clone, Copy, dyn_any::DynAny, PartialEq, serde::Serialize, serde::Deserialize)]
	pub struct Footprint {
	/// Inverse of the transform which will be applied to the node output during the rendering process
	pub transform: DAffine2,
	/// Resolution of the target output area in pixels
	pub resolution: glam::UVec2,
	/// Quality of the render, this may be used by caching nodes to decide if the cached render is sufficient
	pub quality: RenderQuality,
	}

	impl Default for Footprint {
	fn default() -> Self {
	Self::DEFAULT
	}
	}

	impl Footprint {
	pub const DEFAULT: Self = Self {
	transform: DAffine2::IDENTITY,
	resolution: glam::UVec2::new(1920, 1080),
	quality: RenderQuality::Full,
	};

	pub const BOUNDLESS: Self = Self {
	transform: DAffine2 {
	matrix2: DMat2::from_diagonal(DVec2::splat(f64::INFINITY)),
	translation: DVec2::ZERO,
	},
	resolution: glam::UVec2::new(0, 0),
	quality: RenderQuality::Full,
	};

	pub fn viewport_bounds_in_local_space(&self) -> AxisAlignedBbox {
	let inverse = self.transform.inverse();
	let start = inverse.transform_point2((0., 0.).into());
	let end = inverse.transform_point2(self.resolution.as_dvec2());
	AxisAlignedBbox { start, end }
	}

	pub fn scale(&self) -> DVec2 {
	self.transform.decompose_scale()
	}

	pub fn offset(&self) -> DVec2 {
	self.transform.transform_point2(DVec2::ZERO)
	}
	}

	impl From<()> for Footprint {
	fn from(_: ()) -> Self {
	Footprint::default()
	}
	}

	impl std::hash::Hash for Footprint {
	fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
	self.transform.to_cols_array().iter().for_each(\|x\| x.to_le_bytes().hash(state));
	self.resolution.hash(state)
	}
	}

	pub trait ApplyTransform {
	fn apply_transform(&mut self, modification: &DAffine2);
	}
	impl<T: TransformMut> ApplyTransform for T {
	fn apply_transform(&mut self, &modification: &DAffine2) {
	self.transform_mut() = self.transform() modification
	}
	}
	impl ApplyTransform for () {
	fn apply_transform(&mut self, &_modification: &DAffine2) {}
	}