'Lazy Brush' is a JavaScript library that allows you to draw smoothly and easily with a mouse or your fingertips.
When drawing pictures using a mouse in painting software or writing with your finger on a smartphone or tablet, it can be difficult to draw straight or curved lines, resulting in jagged or distorted lines. ' lazy-brush ' is a JavaScript library that smooths out drawing with a mouse or finger, and its mechanism has been made public on GitHub.
Lazy Brush - Smooth Canvas Drawing
GitHub - dulnan/lazy-brush: Smooth drawing with mouse, finger or other pointing device
https://github.com/dulnan/lazy-brush
Below are some examples of writing using Windows Paint software. The top image was written with a mouse; the shaking caused by the mouse movement appears as jerky lines. The bottom image was written with a finger by touching the screen; the lines are less jerky than when using a mouse, but the lines are more misaligned than when using a mouse.
Lazy-brush is a technology that prevents small vibrations and tremors from appearing when drawing lines with a mouse or finger. Below is
A unique feature of lazy-brush is that the line does not follow the mouse pointer directly, but is drawn with a slight delay. If you set 'LAZY RADIUS' to '60' as shown below, the orange circle (where the line will be drawn) will be shifted by 60 pixels from the position of the black dot on the right side of the image (the position of the mouse pointer). This shift acts as a cushion to absorb small tremors and shakes, allowing you to draw clean lines.
Increasing the 'LAZY RADIUS' value increases the distance from the mouse or finger to the brush position.
Also, increasing the 'Friction' value will slow down the brush's movement relative to the mouse. The slower the brush moves, the easier it is to draw smooth lines.
'BRUSH RADIUS' allows you to change the size of the brush radius.
Another important point is that Lazy Brush returns a boolean value indicating whether the pointer or brush has moved, which not only improves the quality of the lines but also optimizes performance and reduces unnecessary drawing processes.
Lazy Brush is a JavaScript library, and its repository is available on GitHub, so you can install and use it.
GitHub - dulnan/lazy-brush: Smooth drawing with mouse, finger or other pointing device
https://github.com/dulnan/lazy-brush?tab=readme-ov-file
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