Capi tranforms

Hi,

I tried this with LWW 6.1:

(defun test ()

(let ((pane (capi:contain (make-instance 'capi:output-pane))))

(gp:set-graphics-state pane :transform '(10 0 0 10 0 0) :scale-thickness nil :thickness 0.1)

(loop for i from 1 to 20 do

(gp:draw-point pane i i :thickness 0.1))

))

and I can't seem to set the transform so that it doesn't affect the size of pixels.

How can I zoom say 10x the graphics area, but still draw 'true' pixels (non-scaled) ?

I surely miss something obvious.

--
Fabrice

Re: Capi tranforms

.... (make-instance 'capi:output-pane :drawing-mode :compatible) ...

pt

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Re: Capi tranforms

Thanks for your answers.

There seems to be something wrong however.

I'm running LWW 6.1 under Windows 8 and

gp:draw-point is always scaled, whatever I do.

(defun test ()

(let ((pane (capi:contain (make-instance 'capi:output-pane

;; :drawing-mode :compatible

))))

(gp:set-graphics-port-coordinates pane :bottom -0.5 :left -1.5 :top 0.5 :right 1.5)

(gp:draw-line pane -0.2 -0.2 0.2 0.2)

(gp:draw-point pane -0.2 0.2

;; :thickness .001

)))

I get the picture below. I tried to fix it by using (gp:draw-line pane x y x y)

but that doesn't draw any point.

Drawing in compatible mode doesn't draw the point at all.

Fabrice

2013/3/31 Paul Tarvydas <paultarvydas@gmail.com>

... (make-instance 'capi:output-pane :drawing-mode :compatible) ...

pt

--
Fabrice Popineau

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Re: Capi tranforms

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Re: Capi tranforms

2. Drawing to a pane immediately after creating it with capi:contain is not
recommended, because it happs in the wrong thread and also might be erased by
the window system. Instead, put the drawing operations in the
:display-callback of the pane.

Oops. Sure.

Thanks for the workaround.

Fabrice