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Re: IDLgrSurface with transparent lines? [message #39169]

Thu, 29 April 2004 08:45

Antonio Santiago
Messages: 201
Registered: February 2004

Senior Member

Hi Karl,

thanks for your code, it has been a lot of usefull.

But really i want something like the next code, but instead with a
texture map image i want use the vert_colors options. In the next code i
draw a texture map image with lines in the IDLgrSurface. If you change
the ";" to use vert_colors and ommit texture_map then the IDLgrSurface
is drawed without transparence.
i would like can specifie a level of transparence in the colors of
IDLgrSurface (if possible).

Thanks for your time.
Antonio

----------------------------------------------------------

pro test
img = BYTARR(4,2,2)
img[1,*,*] = 255 ; green
img[3,*,*] = 200 ; alpha

oTexture = OBJ_NEW('IDLgrImage', img, BLEND_FUNCTION=[3,4])
READ_JPEG, FILEPATH('rose.jpg', SUBDIR=['examples','data']), img, /TRUE

s = SIZE(img, /DIMENSIONS)
img2 = BYTARR(s[0]+1, s[1], s[2])

img2[0:2, *, *] = img
img2[3, *, *] = 100

oTexture2 = OBJ_NEW('IDLgrImage', img2, BLEND_FUNCTION=[3,4])

oSurface = OBJ_NEW('IDLgrSurface', DIST(45), $
COLOR=[255,255,255], STYLE=1, THICK=2, $
TEXTURE_MAP=oTexture2, TEXTURE_COORD=[[0,0],[1,0],[1,1],[0,1]])
;VERT_COLORS=[90,90,90,90, 150,150,150,150, 200,200,200,200])

oPolygon = OBJ_NEW('IDLgrPolygon', [0,1,1,0]*45, [0,0,1,1]*45, $
COLOR=[255,255,255], TEXTURE_MAP=oTexture, $
TEXTURE_COORD=[[0,0],[1,0],[1,1],[0,1]])
oModel = OBJ_NEW('IDLgrModel')
oModel->Add, [oPolygon, oSurface]
XOBJVIEW, oModel
end

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[Message index]

		Re: IDLgrSurface with transparent lines? By: Antonio Santiago on Thu, 29 April 2004 08:45
		Re: IDLgrSurface with transparent lines? By: Karl Schultz on Thu, 29 April 2004 07:05
		Re: IDLgrSurface with transparent lines? By: Rick Towler on Thu, 29 April 2004 10:22

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