draw
Draws a Coons patch: the interpolation of four cubics with shared corners, associating a color, and optionally a texture SkPoint, with each corner.
Coons patch uses clip and Matrix, paint Shader, ColorFilter, alpha, ImageFilter, and BlendMode. If Shader is provided it is treated as Coons patch texture; BlendMode mode combines color colors and Shader if both are provided.
Point array cubics specifies four Path cubic starting at the top-left corner, in clockwise order, sharing every fourth point. The last Path cubic ends at the first point.
Color array color associates colors with corners in top-left, top-right, bottom-right, bottom-left order.C
If paint contains Shader, Point array texCoords maps Shader as texture to corners in top-left, top-right, bottom-right, bottom-left order. If texCoords is nullptr, Shader is mapped using positions (derived from cubics).
Return
this
Parameters
Path cubic array, sharing common points
color array, one for each corner
Point array of texture coordinates, mapping Shader to corners; may be null
BlendMode for colors, and for Shader if paint has one
Shader, ColorFilter, BlendMode, used to draw