unsafe static void EvaluateCallback(IntPtr info, nfloat *input, nfloat *output)
{
GCHandle lgc = GCHandle.FromIntPtr(info);
CGFunction container = (CGFunction)lgc.Target;
container.evaluate(input, output);
}
public static CGShading CreateAxial (CGColorSpace colorspace, CGPoint start, CGPoint end, CGFunction function, bool extendStart, bool extendEnd)
{
if (colorspace == null)
throw new ArgumentNullException ("colorspace");
if (colorspace.Handle == IntPtr.Zero)
throw new ObjectDisposedException ("colorspace");
if (function == null)
throw new ArgumentNullException ("function");
if (function.Handle == IntPtr.Zero)
throw new ObjectDisposedException ("function");
return new CGShading (CGShadingCreateAxial (colorspace.Handle, start, end, function.Handle, extendStart, extendEnd), true);
}
public static CGShading CreateRadial(CGColorSpace colorspace, CGPoint start, nfloat startRadius, CGPoint end, nfloat endRadius,
CGFunction function, bool extendStart, bool extendEnd)
{
if (colorspace == null)
{
throw new ArgumentNullException("colorspace");
}
if (colorspace.Handle == IntPtr.Zero)
{
throw new ObjectDisposedException("colorspace");
}
if (function == null)
{
throw new ArgumentNullException("function");
}
if (function.Handle == IntPtr.Zero)
{
throw new ObjectDisposedException("function");
}
return(new CGShading(CGShadingCreateRadial(colorspace.Handle, start, startRadius, end, endRadius,
function.Handle, extendStart, extendEnd), true));
}