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0intro(1), intro(1)
introduction to Plan 9
0intro(3), intro(3)
introduction to the Plan 9 devices
0intro(5), intro(5)
introduction to the Plan 9 File Protocol, 9P
0intro(9), intro(9)
introduction to raster image software
3to1(9), mcut(9), improve(9), quantize(9), dither(9)
picture color compression
9v(9), save(9), flip(9)
copy picture files to and from screen
aplot(9)
isometric plots of data arrays
arith3(9), add3(9), sub3(9), div3(9), mul3(9), eqpt3(9), closept3(9), dot3(9), cross3(9), len3(9), dist3(9), unit3(9), midpt3(9), lerp3(9), reflect3(9), nearseg3(9), pldist3(9), vdiv3(9), vrem3(9), pn2f3(9), ppp2f3(9), fff2p3(9), pdiv4(9), add4(9), sub4(9)
operations on 3-d points and planes
bbox(9)
compute bounding rectangle
card(9), ramp(9)
create simple color fields
cmap(9)
color map format
cmap(9), remap(9)
map colors
cpr(9), cprview(9)
cheesy polygon renderer and viewer
cvt2pic(9), dumppic(9), ega2pic(9), face2pic(9), gif2pic(9), jpg2pic(9), nasa2pic(9), pcx2pic(9), picopic(9), sgi2pic(9), targa2pic(9), tiff2pic(9), utah2pic(9), xbm2pic(9)
convert other formats to picture files
fcall(2), Fcall(2), convS2M(2), convD2M(2), convM2S(2), convM2D(2), getS(2), fcallconv(2), dirconv(2), dirmodeconv(2)
interface to Plan 9 File protocol
filters(9), adapt(9), ahe(9), crispen(9), laplace(9), edge(9), edge2(9), edge3(9), extremum(9), median(9), nonoise(9), smooth(9), shadepic(9)
image neighborhood operators
floyd(9), halftone(9), hysteresis(9)
create 1-bit images by dithering
getcmap(9)
read a color map from a file
getflags(9), usage(9)
process flag arguments in argv
getmap(9), colors(9)
manipulate the display's color map
he(9)
histogram equalization
hed(9), nohed(9)
edit or remove picture file header
hist(9)
pixel value histogram
lam(9), posit(9), piccat(9), picjoin(9)
combine several images
lerp(9), sub(9)
linear combinations of images
logo(9)
convert image into an AT&T logo
lum(9)
compute luminance
matrix(9), ident(9), matmul(9), matmulr(9), determinant(9), adjoint(9), invertmat(9), xformpoint(9), xformpointd(9), xformplane(9), pushmat(9), popmat(9), rot(9), qrot(9), scale(9), move(9), xform(9), ixform(9), persp(9), look(9), viewport(9)
Geometric transformations
moto(9)
create animation scripts
mugs(9)
make face icons from pictures
pcp(9)
copy pictures
pic2ps(9), pic2gif(9)
convert picture files to other formats
picfile(9)
raster graphic image format
picinfo(9)
print information about picture files
picopen(9), picopen_r(9), picopen_w(9), picread(9), picwrite(9), picclose(9), rdpicfile(9), wrpicfile(9), picputprop(9), picgetprop(9), picunpack(9), picpack(9)
picture file I/O
qball(9)
3-d rotation controller
quaternion(9), qtom(9), mtoq(9), qadd(9), qsub(9), qneg(9), qmul(9), qdiv(9), qunit(9), qinv(9), qlen(9), slerp(9), qmid(9), qsqrt(9)
Quaternion arithmetic
resample(9), pdup(9)
resample a picture
rotate(9), transpose(9)
re-orient an image
xpand(9), picnegate(9)
adjust dynamic range
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