The FrameBufferBezier function plots a bezier curve.

The argument ptr is a pointer to the frame buffer.

The coordinates of the four points that define the bezier curve are given by the arguments x1, y1,x2, y2,x2, y3, and x4, y4. The two end points are defined by x1, y1 and x4,y4. The other two coordinates are the control points.

The color used to plot the curve is given by the color which is a 32-bit number that represents the alpha,red,green and blue components of the color as 8-bit numbers. The alpha channel occupies the most significant bits and the blue channel occupies the least significant bits. The argument mask defines which color channels are active. Setting this argument to (0x0f) will output the color to all four channels. The most significant bit controls the alpha channel and the least significant bit controls the blue channel.

The width of the line used to plot the curve is controlled using the argument width, a value of zero will plot a hairline. The dot-dash pattern is given by dash. If this is set to a NULL pointer, a solid line is plotted.

The clipping polygon is given by the argument clip. If this is set to a NULL pointer, no clipping is performed.