♻️ Refactor custom matrix code into submodule

render-wasm/src/shapes.rs

@@ -6,10 +6,13 @@ use crate::render::BlendMode;
 
 mod fills;
 mod images;
+mod matrix;
 mod paths;
 mod renderable;
+
 pub use fills::*;
 pub use images::*;
+use matrix::*;
 pub use paths::*;
 
 #[derive(Debug, Clone, PartialEq)]
@@ -21,29 +24,6 @@ pub enum Kind {
 
 pub type Color = skia::Color;
 
-#[derive(Debug, Clone, Copy)]
-pub struct Matrix {
-    pub a: f32,
-    pub b: f32,
-    pub c: f32,
-    pub d: f32,
-    pub e: f32,
-    pub f: f32,
-}
-
-impl Matrix {
-    pub fn identity() -> Self {
-        Self {
-            a: 1.,
-            b: 0.,
-            c: 0.,
-            d: 1.,
-            e: 0.,
-            f: 0.,
-        }
-    }
-}
-
 #[derive(Debug, Clone)]
 #[allow(dead_code)]
 pub struct Shape {
@@ -103,12 +83,7 @@ impl Shape {
     }
 
     pub fn set_transform(&mut self, a: f32, b: f32, c: f32, d: f32, e: f32, f: f32) {
-        self.transform.a = a;
-        self.transform.b = b;
-        self.transform.c = c;
-        self.transform.d = d;
-        self.transform.e = e;
-        self.transform.f = f;
+        self.transform = Matrix::new(a, b, c, d, e, f);
     }
 
     pub fn set_opacity(&mut self, opacity: f32) {
@@ -127,18 +102,6 @@ impl Shape {
         self.children.clear();
     }
 
-    pub fn translation(&self) -> (f32, f32) {
-        (self.transform.e, self.transform.f)
-    }
-
-    pub fn scale(&self) -> (f32, f32) {
-        (self.transform.a, self.transform.d)
-    }
-
-    pub fn skew(&self) -> (f32, f32) {
-        (self.transform.c, self.transform.b)
-    }
-
     pub fn fills(&self) -> std::slice::Iter<Fill> {
         self.fills.iter()
     }

render-wasm/src/shapes/matrix.rs

@@ -0,0 +1,61 @@
+use skia_safe as skia;
+
+#[derive(Debug, Clone, Copy)]
+pub struct Matrix {
+    pub a: f32,
+    pub b: f32,
+    pub c: f32,
+    pub d: f32,
+    pub e: f32,
+    pub f: f32,
+}
+
+impl Matrix {
+    pub fn new(a: f32, b: f32, c: f32, d: f32, e: f32, f: f32) -> Self {
+        Self { a, b, c, d, e, f }
+    }
+
+    pub fn identity() -> Self {
+        Self {
+            a: 1.,
+            b: 0.,
+            c: 0.,
+            d: 1.,
+            e: 0.,
+            f: 0.,
+        }
+    }
+
+    pub fn to_skia_matrix(&self) -> skia::Matrix {
+        let mut res = skia::Matrix::new_identity();
+
+        let (translate_x, translate_y) = self.translation();
+        let (scale_x, scale_y) = self.scale();
+        let (skew_x, skew_y) = self.skew();
+        res.set_all(
+            scale_x,
+            skew_x,
+            translate_x,
+            skew_y,
+            scale_y,
+            translate_y,
+            0.,
+            0.,
+            1.,
+        );
+
+        res
+    }
+
+    fn translation(&self) -> (f32, f32) {
+        (self.e, self.f)
+    }
+
+    fn scale(&self) -> (f32, f32) {
+        (self.a, self.d)
+    }
+
+    fn skew(&self) -> (f32, f32) {
+        (self.c, self.b)
+    }
+}

render-wasm/src/shapes/renderable.rs

@@ -7,21 +7,7 @@ use crate::render::{ImageStore, Renderable};
 
 impl Renderable for Shape {
     fn render(&self, surface: &mut skia_safe::Surface, images: &ImageStore) -> Result<(), String> {
-        let mut transform = skia::Matrix::new_identity();
-        let (translate_x, translate_y) = self.translation();
-        let (scale_x, scale_y) = self.scale();
-        let (skew_x, skew_y) = self.skew();
-        transform.set_all(
-            scale_x,
-            skew_x,
-            translate_x,
-            skew_y,
-            scale_y,
-            translate_y,
-            0.,
-            0.,
-            1.,
-        );
+        let transform = self.transform.to_skia_matrix();
 
         // Check transform-matrix code from common/src/app/common/geom/shapes/transforms.cljc
         let center = self.selrect.center();