transparency
transp
transp
Returns the transp value.
transp(t)
Changes this value.
Notes:
1) t=1: transparency varies from 0 (transparent) to 1 (opaque): by default.
2) t=0: transparency varies from 0 (opaque) to 1 (transparent).
3) yes transp must be activated.
transp dist
transp dist(c1,c2)vol(num,nb)poi(x,y,z)
Computes transparencies of volumes [num,num+nb[ as (d-d1)/(d2-d1), where
d1 = c1 * d0; d2 = c2 * d0; d0 = dist vol(num)poi((x,y,z)
transp dist(c1,c2)vol(num,nb)eye
Same with (x,y,z)=eye.
transp image
transp image(id)
Returns the alpha layer of the image id, equivalent to
image(id)format("A").
Options:
average: returns the average of the alpha layer of the image id.
transp image(id)=t
Changes the alpha layer of the image id by creating a transparency from 1 (totaly transparent)
to 0 (totaly opaque) according to options.
Equivalent to image(id)format("A")=T, with:
T=calloc(nx*ny,t);
nx and ny are the image dimensions.
Options:
abs: dont change transparency of pixels totally transparent.
transp image(id)center(x,y)=t1,t2: transparency from t1 (point x,y) to t2 (edge).
cut(t0): does not modify pixels whose alpha is t0.
below: transparency from 0 to t on the upper half of the image.
above: transparency from 0 to t on the lower half of the image.
right: transparency from 0 to t on the right half of the image.
left: transparency from 0 to t on the left half of the image.
normal: the center coordinates are normalized between 0.0 and 1.0.
Example:
transp image(1)cut(0)=t; changes the transparency of pixels which are not completly
transparent, this allows for example to change the transparency of an image after extraction by
image(1,2)poi(x,y)line(Ligne).
Notes:
1) yes transp must be activated.
2) t=0: total transparency (default), t=1: opaque.
3) graphic("glBlendFunc(GL_ONE_MINUS_SRC_ALPHA)")
t=0: total transparency, t=1: opaque.
4) graphic("glBlendFunc(GL_SRC_ALPHA)")
t=0: opaque, t=1: total transparency.
To vary the transparency see image transp.
Same options as image transp.
transp brush(id)
Returns the transparencies t1 (center) et t2 (edge) of brush id.
transp brush(id)=t1,t2
Modifies these transparencies.
transp secx
transp secx vol(id)
The transparencies of all secx vertices of volume id are interpolated
between 0.0 and 1.0.
Options:
transp(t1,t1): between t1 and t2.
secx(s1,s2): between secx s1 and s2.
transp secy
transp secy vol(id)
The transparencies of all secy vertices of volume id are interpolated
between 0.0 and 1.0.
Options:
transp(t1,t1): between t1 and t2.
secy(s1,s2): between secy s1 and s2.
transp vertex
transp vertex vol(id)
The transparencies of all vertices of volume id are interpolated
between 0.0 and 1.0.
Options:
transp(t1,t1): between t1 and t2.
vertex(s1,s2): between vertices s1 and s2.
transp texture
transp texture vol(id)
Returns the property transp texture of volume id.
transp texture vol(id)=t1,t2,...,tn
Changes this property.
Note:
if multiple textures are defined on volume id by
texture vol(id)=t1,t2,...,tn, tti is the
transparency associated to the texture ti (1:n by default).
see coe transp texture for varying the transparencies.
transp texture fac(num)vol(id)
Returns the property transp texture of facet num of volume id.
transp texture fac(num)vol(id)=t1,t2,...,tn
Changes this property.
transp vol
transp vol(id)
Returns the 4th transparency component of illum vol(id).
transp vol(id)=t
Changes this value.
See also: