Re: [Plplot-devel] Plplot embedded in pyqt + plimage function

[Joao C. <jca...@in...>]

On Thursday 22 November 2001 17:16, Alessandro Mirone wrote:
| Hi Jo=E3o,
|  it's great that you got plimage working!!
| I will certainly send a description of plimage.
|
| I agree that plmoveimage is not necessary and
| we can discard it by the moment.

OK.

| Yes it is a good idea to collapse all those PLESC.
|
| I would like to keep the PLESC that disactivate the pixmap
| and metabuffer.=20

The PLESC_DOUBLEBUFFERING already does "write_to_window =3D 0/1"

|That is because I am planning to
| write things like xhairs ( or whatever shape )
| from python.

xhairs already exists, as you might know, use plGetCursor()

| That lets you the freedom to ( just imagine)
| select a polygonal shape from an image for an integral
| or whatever having at the same time a visual representetion
| of the shape. The shape changes continuosly and might be
| very general so it's good to manage that from python.

You could as well just use plGetCursor() to retrieve the shape, then plot=
 it=20
in xor mode, try "./x01c -dev xwin -xor".

| About the call to plimage we can discuss the arguments..
| I have no particular  preference so may be we could generate an
| analogous of
| pgimage.

I used pgplot years ago, so I don't remember how pgimage() works.
Why not use the standard plplot way,  "PLFLT **z"? It is a bit more diffi=
cult=20
to dinamicaly allocate memory, but one could write a utility function for=
 it=20
(as well as an utility to return the maximum and minimum of such arrays,=20
which I believe is a very frequent operation on plplot and particularly i=
n=20
plimage related functions.

| What do you plan todo? You commit a working plimage
| and the we refine the plesc? Or you want me to refine the plescs?

I will commit my changes (in a couple of days from now), and we will latt=
er=20
refine some details. OK?

| As you prefer. By the moment I'll send a description of plimage
| to generate the html

Nice. No job is finish till the paper work is done :) (aarrrghhhh--agains=
t me=20
I speek!)

| Ciao
|    Alessandro

Bye,
Joao