Multifunctional picture smearing method based on canvas

The invention discloses a multifunctional picture smearing method based on canvas. Two canvas labels are adopted and overlapped, the lower canvas label is used for storing a picture to be smeared, the lower canvas label is called as picture canvas, the upper canvas label is used for painting with a painting brush and the upper canvas label is called as canvas, the background color is set to be transparent, the painting brush only paints on the upper canvas label, and when painting brush traces are exported, the painting brush traces only need to be exported from the upper canvas label, so that the painting brush traces can be exported, and the painting brush traces can be exported. Therefore, the exported paintbrush trace is separated from the picture, only the paintbrush trace is exported, the color of the paintbrush trace can be changed, revocation and emptying of the paintbrush trace can be supported, and application requirements are fully met. 本发明公开一种基于canvas的多功能画面涂抹方法。本发明通过采用两个canvas标签，将其重叠，下面的canvas标签用于