| simple IDLgrImage 4xNxM problem [message #65823] |
Thu, 26 March 2009 11:40 |
natha
Messages: 482
Registered: October 2007
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Senior Member |
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Hi folks,
I'm Trying to draw a simple semi-transparent red square. I use the
BLEND_FUNCTION property and I set the data in the IDlgrImage as a
4xNxN matrix (red-green-blue-alpha values).
Why the following code doesn't works ?
------------------------------------------------------------ --------------------
base=WIDGET_BASE(/COLUMN, /FRAME)
wDraw=WIDGET_DRAW(base, XSIZE=500, YSIZE=500, GRAPHICS_LEVEL=2)
WIDGET_CONTROL, base, XOFFSET=100, YOFFSET=100, /REALIZE
WIDGET_CONTROL, wDraw, GET_VALUE=wid
wid->SetProperty, QUALITY=2
oWindow=wid
viewplane_rect=[0., 0., 500., 500.]
oView = OBJ_NEW('IDLgrView', VIEWPLANE_RECT = viewplane_rect, COLOR=
[255,255,255])
oModel = OBJ_NEW('IDLgrModel')
oView->Add, oModel
image=OBJ_NEW('IDLgrImage')
oModel->Add, image
data=FLTARR(125,125)
data[0,*,*]=255
data[3,*,*]=0.5
image->SetProperty, DATA=data, BLEND_FUNCTION=[3,4], $
LOCATION=[50,50], DIMENSIONS=[125,125]
oWindow->Draw, oView
------------------------------------------------------------ --------------------
It should works but there is no result.
Can anybody help me ??
Help me,
llo
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