[Bf-python] Blender.Image Function

[Austin Benesh]

Ok, but I need help figuring out how to actually access the pixels in the
Imbuf->rect function. Does anyone know how I might do this? Here's the code.
Please tell me what's wrong!

static PyObject *Image_getPixels_g(BPy_Image * self, PyObject *args)
{
	PyObject *pyObjImage;
	PyObject *attr;
	BPy_Image *py_img;
	Image *image=self->image;
	unsigned int u;
	unsigned int p;
	int ptr;
	int x=0;
	int y=0;

	if( !PyArg_ParseTuple( args, "ii", &x, &y ) )
		return EXPP_ReturnPyObjError( PyExc_TypeError,
					      "expected 2 integers" );
	
//	py_img = ( BPy_Image * ) self;
//	image = py_img->image;

	if( !image->ibuf||!image->ibuf->rect )	/* if no image data
available */
		load_image( image, IB_rect, "", 0 );	/* loading it */
		
	if( !image->ibuf||!image->ibuf->rect )	/* didn't work */
		return EXPP_ReturnPyObjError( PyExc_RuntimeError,
					      "couldn't load image data in
Blender" );

	ptr=(x + y * image->ibuf->x);

	attr = Py_BuildValue( "h", image->ibuf->rect[ptr+1] );
// testing section	
//	
	

	

	if( attr )
		return attr;

	return EXPP_ReturnPyObjError( PyExc_RuntimeError,
				      "couldn't get Image.depth attribute"
);
};

-----Original Message-----
From: bf-python-bounces at projects.blender.org
[mailto:bf-python-bounces at projects.blender.org] On Behalf Of Stephen Swaney
Sent: Sunday, February 20, 2005 5:58 PM
To: Blender Foundation Python list
Subject: Re: [Bf-python] Blender.Image Function

On Sun, Feb 20, 2005 at 05:01:21PM -0700, Austin Benesh wrote:
> I am writing a patch that many people say is needed – it adds three new
> functions to Blender.Image: 
> 
> getPixelColor_G(x, y)
> 
> getPixelColor_R(x, y)
> 
> getPixelColor_B(x, y)

In my not-so-humble opinion, a nicer and slightly more OO
interface would be to provide a single method that returns
a list of the values:

r,g,b = getPixelColor( x, y )

This would be nicer for treating the pixel as a vector in color
space.  And much less typing and overhead than:

r = getP_R..
g = getP_G..
b = getP_B..

If you don't want the extra values, you can always toss
them:

junk, g, junk = getPixelColor()

But opinions may vary.  Let the debate begin!

-- 
Stephen Swaney			
sswaney at centurytel.net

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