Creates and returns a linear gradient with middle stop. Parameters (sx, sy) (ex, ey) specify the start
and end coordinates of the linear gradient, icol specifies the start color, midp specifies stop point in
range (0..1), and ocol the end color.
The gradient is transformed by the current transform when it is passed to fillPaint or strokePaint.
Creates and returns a linear gradient with middle stop. Parameters (sx, sy) (ex, ey) specify the start and end coordinates of the linear gradient, icol specifies the start color, midp specifies stop point in range (0..1), and ocol the end color. The gradient is transformed by the current transform when it is passed to fillPaint or strokePaint.