Add files via upload

Author: harshdoesdev

src/utils.js

@@ -16,6 +16,26 @@ export const randomInt = (min = 0, max = 1) => {
 
 };
 
+// converts screen point to canvas point
+
+export const screenToCanvas = (cnv, x, y) => {
+
+  const rect = cnv.getBoundingClientRect(), // abs. size of element
+        
+        scaleX = cnv.width / rect.width,    // relationship bitmap vs. element for X
+        
+        scaleY = cmv.height / rect.height;  // relationship bitmap vs. element for Y
+
+  return {
+    
+    x: (x - rect.left) * scaleX,   // scale mouse coordinates after they have
+    
+    y: (y - rect.top) * scaleY     // been adjusted to be relative to element
+  
+  }
+
+};
+
 // array stuff
 
 export const unique = arr => [...new Set(arr)];