Method for implementing brush stroke of electronic whiteboard marker, storage medium, and electronic whiteboard

A method for implementing a brush stroke of an electronic whiteboard marker, comprising following steps:

• obtaining touchpoint coordinates in a writing process, and constructing a Bézier curve equation based on the touchpoint coordinates;
• dividing a handwriting curve into continuous handwriting units equidistantly based on the Bézier curve equation;
• constructing a parallelogram in the handwriting unit and obtaining a midpoint of the parallelogram formed in the handwriting unit;
• connecting a midpoint of each parallelogram to form a midpoint connection line;
• calculating directed area of a vector cross product of the midpoint connection line and a diagonal of the parallelogram, and determining a compensation point of the handwriting unit based on the directed area of the vector cross product;
• if the directed area of the vector cross product is greater than 0, selecting an upper-left vertex and a lower-right vertex of the parallelogram as compensation points;
• or if the directed area of the vector cross product is less than 0, selecting an upper-right vertex and a lower-left vertex of the parallelogram as compensation points;
• connecting compensation points of adjacent ones of the handwriting units to form a closed compensation zone;
• and
• filling the compensation zone with a handwriting-related color.