def treebranch(pt1, pt2, r):
retval = irit.swpsclsrf( irit.circle( ( 0, 0, 0 ), 1 ),
irit.coerce( pt1, irit.E3 ) + \
irit.coerce( pt2, irit.E3 ),
irit.ctlpt( irit.E2, 0, r ) + \
irit.ctlpt( irit.E2, 1, r * wfactor ), irit.GenRealObject(0), 1 )
return retval
def coercetobezpsrf(mv, umin, umax, vmin, vmax):
mvbzr = irit.coerce(mv, irit.BEZIER_TYPE)
srfbzr = irit.coerce(irit.coerce(mvbzr, irit.SURFACE_TYPE), irit.P3)
srfbzr = irit.sregion( irit.sregion( srfbzr, irit.ROW, umin, umax ), irit.COL, vmin,\
vmax )
retval = srfbzr
return retval
def evalantipodalptsonsrf( srf ):
aps = irit.antipodal( srf, 0.001, (-1e-012 ) )
irit.printf( "%d antipodal points detected\n", irit.list( irit.SizeOf( aps ) ) )
retval = irit.nil( )
diam = 0
i = 1
while ( i <= irit.SizeOf( aps ) ):
ap = irit.nth( aps, i )
u1 = irit.coord( ap, 1 )
v1 = irit.coord( ap, 2 )
u2 = irit.coord( ap, 3 )
v2 = irit.coord( ap, 4 )
pt1 = irit.seval( srf, irit.FetchRealObject(u1), irit.FetchRealObject(v1) )
pt2 = irit.seval( srf, irit.FetchRealObject(u2), irit.FetchRealObject(v2) )
if ( irit.dstptpt( irit.coerce( pt1, irit.POINT_TYPE ),
irit.coerce( pt2, irit.POINT_TYPE ) ) > diam ):
diam = irit.dstptpt( irit.coerce( pt1, irit.POINT_TYPE ),
irit.coerce( pt2, irit.POINT_TYPE ) )
diamline = pt1 + pt2
irit.snoc( irit.list( pt1 + pt2, pt1 * irit.tx( 0 ), pt2 * irit.tx( 0 ) ), retval )
i = i + 1
irit.color( retval, irit.YELLOW )
irit.color( diamline, irit.CYAN )
irit.adwidth( diamline, 3 )
irit.snoc( irit.list( diamline ), retval )
return retval
def dominos(path, scl, piecetimestep):
retval = irit.nil()
animtime = 0
dominopiece = irit.box(
(-0.01, -0.006, 0), 0.02, 0.006, 0.05) * irit.sc(scl)
rot_x = irit.cbezier( irit.list( irit.ctlpt( irit.E1, 0 ), \
irit.ctlpt( irit.E1, 80 ) ) )
crvdomain = irit.pdomain(path)
t = irit.FetchRealObject(irit.nth(crvdomain, 1))
dpath = irit.cderive(path)
while (t < irit.FetchRealObject(irit.nth(crvdomain, 2))):
d = irit.Fetch3TupleObject(
irit.coerce(irit.ceval(dpath, t), irit.POINT_TYPE))
dlen = math.sqrt(DotProd(d, d))
rot_x = irit.creparam(rot_x, animtime, animtime + piecetimestep)
irit.attrib(dominopiece, "animation", irit.list(rot_x))
irit.setname(irit.getattr(dominopiece, "animation"), 0, "rot_x")
dp = dominopiece * irit.rz(
-math.atan2(d[0], d[1]) * 180 / math.pi) * irit.trans(
irit.Fetch3TupleObject(
irit.coerce(irit.ceval(path, t), irit.VECTOR_TYPE)))
irit.snoc(dp, retval)
t = t + 0.04 * scl / dlen
animtime = animtime + piecetimestep * 0.6
return retval
def animbisectcrv2( crv1, crv2, data, cntr ):
irit.color( crv1, irit.YELLOW )
irit.color( crv2, irit.YELLOW )
irit.adwidth( crv1, 4 )
irit.adwidth( crv2, 4 )
i = 0
while ( i <= irit.SizeOf( cntr ) - 1 ):
pt = irit.coord( cntr, i )
pt1 = irit.ceval( crv1, irit.FetchRealObject(irit.coord( pt, 0 ) ))
pt2 = irit.ceval( crv2, irit.FetchRealObject(irit.coord( pt, 1 ) ))
nrml1 = cnormalplnr( crv1, irit.coord( pt, 0 ) )
nrml2 = cnormalplnr( crv2, irit.coord( pt, 1 ) )
aaa = irit.ptslnln( irit.Fetch3TupleObject(irit.coerce( pt1, irit.POINT_TYPE )),
irit.Fetch3TupleObject(nrml1),
irit.Fetch3TupleObject(irit.coerce( pt2, irit.POINT_TYPE )),
irit.Fetch3TupleObject(nrml2 ))
if (irit.IsNullObject(aaa)):
interpt = irit.GenNullObject();
else:
interpt = irit.nth( aaa, 1 )
if ( irit.ThisObject(interpt) == irit.POINT_TYPE ):
irit.color( pt1, irit.GREEN )
irit.color( pt2, irit.GREEN )
irit.color( interpt, irit.WHITE )
bisectlns = irit.coerce( pt1, irit.E2 ) + irit.coerce( interpt, irit.E2 ) + irit.coerce( pt2, irit.E2 )
irit.color( bisectlns, irit.MAGENTA )
if ( irit.FetchRealObject(irit.coord( interpt, 1 )) < 10 and \
irit.FetchRealObject(irit.coord( interpt, 1 )) > (-10 ) and \
irit.FetchRealObject(irit.coord( interpt, 2 )) < 10 and \
irit.FetchRealObject(irit.coord( interpt, 2 )) > (-10 ) ):
irit.view( irit.list( crv1, crv2, data, pt1, pt2, interpt, \
bisectlns ), irit.ON )
i = i + 1
def displayobjobjmdres(o1, o2, eps):
global glbltransx
mdres = irit.mindist2ff(o1, o2, eps)
dist = irit.nth(mdres, 1)
param1 = irit.nth(mdres, 2)
param2 = irit.nth(mdres, 3)
if (irit.SizeOf(param1) == 0):
pt1 = irit.coerce(o1, irit.E3)
else:
prm = irit.nth(param1, 1)
if (irit.ThisObject(prm) == irit.NUMERIC_TYPE):
i = 1
while (i <= irit.SizeOf(param1)):
t = irit.nth(param1, i)
irit.printf("min distance %f detected at t1 = %f\n",
irit.list(dist, t))
i = i + 1
pt1 = irit.ceval(o1, irit.FetchRealObject(t))
else:
i = 1
while (i <= irit.SizeOf(param1)):
uv = irit.nth(param1, i)
irit.printf("min distance %f detected at uv1 = %f %f\n",
irit.list(dist, irit.nth(uv, 1), irit.nth(uv, 2)))
i = i + 1
pt1 = irit.seval(
o1, irit.FetchRealObject(irit.nth(irit.nth(param1, 1), 1)),
irit.FetchRealObject(irit.nth(irit.nth(param1, 1), 2)))
if (irit.SizeOf(param2) == 0):
pt2 = irit.coerce(o2, irit.E3)
else:
prm = irit.nth(param2, 1)
if (irit.ThisObject(prm) == irit.NUMERIC_TYPE):
i = 1
while (i <= irit.SizeOf(param2)):
t = irit.nth(param2, i)
irit.printf("min distance %f detected at t2 = %f\n",
irit.list(dist, t))
i = i + 1
pt2 = irit.ceval(o2, irit.FetchRealObject(t))
else:
i = 1
while (i <= irit.SizeOf(param2)):
uv = irit.nth(param2, i)
irit.printf("min distance %f detected at uv2 = %f %f\n",
irit.list(dist, irit.nth(uv, 1), irit.nth(uv, 2)))
i = i + 1
pt2 = irit.seval(
o2, irit.FetchRealObject(irit.nth(irit.nth(param2, 1), 1)),
irit.FetchRealObject(irit.nth(irit.nth(param2, 1), 2)))
irit.color(pt1, irit.MAGENTA)
irit.color(o1, irit.MAGENTA)
irit.color(pt2, irit.YELLOW)
irit.color(o2, irit.YELLOW)
l = (pt1 + pt2)
all = irit.list(o1, o2, pt1, pt2, l)
irit.snoc(all * irit.tx(glbltransx), glblres)
glbltransx = (glbltransx + 0.5)
irit.interact(all)
def getbisectpt( crv1, crv2, pt ):
pt1 = irit.ceval( crv1, irit.FetchRealObject(irit.coord( pt, 0 ) ))
pt2 = irit.ceval( crv2, irit.FetchRealObject(irit.coord( pt, 1 ) ))
nrml1 = irit.cnormalplnr( crv1, irit.FetchRealObject(irit.coord( pt, 0 ) ))
nrml2 = irit.cnormalplnr( crv2, irit.FetchRealObject(irit.coord( pt, 1 ) ))
interpts = irit.ptslnln( irit.coerce( pt1, irit.POINT_TYPE ), nrml1, irit.coerce( pt2, irit.POINT_TYPE ), nrml2 )
retval = irit.nth( interpts, 1 )
return retval
def coercetobezsrf(mv, umin, umax, vmin, vmax):
mvbzr = irit.coerce(mv, irit.BEZIER_TYPE)
srfbzr = irit.coerce(irit.coerce(mvbzr, irit.SURFACE_TYPE),
irit.E3) * irit.rotx((-90)) * irit.roty((-90))
srfbzr = irit.sregion( irit.sregion( srfbzr, irit.ROW, umin, umax ), irit.COL, vmin,\
vmax )
retval = srfbzr
return retval
def gammakernelpolysrfs( pl, maxgamma, extent ):
retval = irit.nil( )
i = 1
while ( i <= irit.SizeOf( pl ) ):
c = irit.coerce( irit.coord( pl, i - 1 ), irit.E2 ) + irit.coerce( irit.coord( pl, i ), irit.E2 )
k1 = irit.crvkernel( c, maxgamma, 0, irit.GenRealObject(extent), 2 )
k2 = irit.crvkernel( c, (-maxgamma ), 0, irit.GenRealObject(extent), 2 )
irit.snoc( irit.list( setrandomcolor( k1 ), setrandomcolor( k2 ) ), retval )
i = i + 1
return retval
def genanimationorthomatchcrvpts(ppl, crv, scl):
pt1 = irit.point(0, 0, 0)
pt2 = irit.point(0, 0, 0)
vec1 = ( irit.ctlpt( irit.E2, 0, 0 ) + \
irit.ctlpt( irit.E2, 0, scl ) )
irit.color(vec1, irit.YELLOW)
vec2 = ( \
irit.ctlpt( irit.E2, 0, 0 ) + \
irit.ctlpt( irit.E2, 0, scl ) )
irit.color(vec2, irit.CYAN)
pos1 = irit.nil()
pos2 = irit.nil()
rot1 = irit.nil()
rot2 = irit.nil()
i = 0
while (i <= irit.SizeOf(ppl) - 1):
pl = irit.coord(ppl, i)
j = 0
while (j <= irit.SizeOf(pl) - 1):
pt = irit.coord(pl, j)
t1 = irit.coord(pt, 0)
t2 = irit.coord(pt, 1)
if (t1 > t2):
irit.snoc(
irit.coerce(irit.ceval(crv, irit.FetchRealObject(t1)),
irit.POINT_TYPE), pos1)
irit.snoc(
irit.coerce(irit.ceval(crv, irit.FetchRealObject(t2)),
irit.POINT_TYPE), pos2)
n1 = irit.cnormal(crv, irit.FetchRealObject(t1))
n2 = irit.cnormal(crv, irit.FetchRealObject(t2))
irit.snoc(
irit.vector(
math.atan2(irit.FetchRealObject(irit.coord(n1, 0)),
irit.FetchRealObject(irit.coord(n1, 1))) *
180 / math.pi, 0, 0), rot1)
irit.snoc(
irit.vector(
math.atan2(irit.FetchRealObject(irit.coord(n2, 0)),
irit.FetchRealObject(irit.coord(n2, 1))) *
180 / math.pi, 0, 0), rot2)
j = j + 1
if (t1 > t2):
irit.snoc(irit.vector(10000, 0, 0), pos1)
irit.snoc(irit.vector(10000, 0, 0), pos2)
irit.snoc(irit.vector(0, 0, 0), rot1)
irit.snoc(irit.vector(0, 0, 0), rot2)
i = i + 1
irit.attrib(pt1, "animation", makerottransanimobj(irit.nil(), pos1))
irit.attrib(pt2, "animation", makerottransanimobj(irit.nil(), pos2))
irit.attrib(vec1, "animation", makerottransanimobj(rot1, pos1))
irit.attrib(vec2, "animation", makerottransanimobj(rot2, pos2))
retval = irit.list(pt1, pt2, vec1, vec2)
return retval
def updateclosestctlpt(crv, pos):
n = irit.SizeOf(crv)
mindist = 1e+006
retval = minindex = 0
i = 0
while (i <= n - 1):
pt = irit.coerce(irit.coord(crv, i), irit.POINT_TYPE)
if (irit.dstptpt(pt, pos) < mindist):
mindist = irit.dstptpt(pt, pos)
minindex = i
i = i + 1
retval = irit.ceditpt(crv, irit.coerce(pos, irit.CTLPT_TYPE), minindex)
return retval
def originalf(f, newf, deg, c, ptype):
net = irit.nil()
f_p = irit.coerce(f, irit.POWER_TYPE)
tmp = irit.ffsplit(f_p)
tmp3 = irit.ffsplit(newf)
i = 1
while (i <= c):
t = irit.coord(irit.coord(irit.nth(tmp, i), deg), 1)
tmp2 = irit.nth(tmp3, i) * irit.sc(irit.FetchRealObject(t))
irit.snoc(irit.coerce(tmp2, irit.E1), net)
i = i + 1
retval = irit.ffmerge(net, ptype)
return retval
def positionasymptotes(srf, u, v):
retval = irit.nil()
p = irit.seval(srf, u, v)
k = irit.sasympeval(srf, u, v, 1)
i = 1
while (i <= irit.SizeOf(k)):
irit.snoc(
p + irit.coerce(
irit.coerce(p, irit.POINT_TYPE) + irit.nth(k, i), irit.E3),
retval)
i = i + 1
irit.adwidth(retval, 2)
irit.color(retval, irit.GREEN)
return retval
def displayptscrctan2crvs(pts, r, c1, c2):
retval = irit.nil()
circ = irit.circle((0, 0, 0), r)
i = 1
while (i <= irit.SizeOf(pts)):
pt = irit.coord(pts, i)
prms = irit.getattr(pt, "params")
ptc1 = irit.ceval(c1, irit.FetchRealObject(irit.coord(prms, 0)))
ptc2 = irit.ceval(c2, irit.FetchRealObject(irit.coord(prms, 1)))
irit.snoc( irit.list( irit.coerce( pt, irit.E2 ) + ptc1, \
irit.coerce( pt, irit.E2 ) + ptc2, \
circ * irit.trans( irit.Fetch3TupleObject(irit.coerce( pt, irit.VECTOR_TYPE )) ) ), retval )
i = i + 1
return retval
def getbisectcrv( crv1, crv2, cntr ):
ptlist = irit.nil( )
i = 0
while ( i <= irit.SizeOf( cntr ) - 1 ):
pt = irit.coord( cntr, i )
pt1 = irit.ceval( crv1, irit.coord( pt, 0 ) )
pt2 = irit.ceval( crv2, irit.coord( pt, 1 ) )
nrml1 = irit.cnormalplnr( crv1, irit.coord( pt, 0 ) )
nrml2 = irit.cnormalplnr( crv2, irit.coord( pt, 1 ) )
interpts = irit.ptslnln( irit.coerce( pt1, irit.POINT_TYPE ), nrml1, irit.coerce( pt2, irit.POINT_TYPE ), nrml2 )
irit.snoc( irit.nth( interpts, 1 ), ptlist )
i = i + 1
retval = irit.cbspline( 2, ptlist, irit.list( irit.KV_OPEN ) )
return retval
def displayposnormal(crv, t1, t2, scl, bg_obj):
pt1 = irit.ceval(crv, irit.FetchRealObject(t1))
pt2 = irit.ceval(crv, irit.FetchRealObject(t2))
n1 = irit.cnormal(crv, irit.FetchRealObject(t1))
n2 = irit.cnormal(crv, irit.FetchRealObject(t2))
ptt1 = (irit.ctlpt(irit.E2, t1, t2) + irit.ctlpt(irit.E2, t1, 0))
irit.color(ptt1, irit.YELLOW)
ptt2 = (irit.ctlpt(irit.E2, t1, t2) + irit.ctlpt(irit.E2, 0, t2))
irit.color(ptt2, irit.CYAN)
n1 = (irit.coerce(
irit.coerce(pt1, irit.POINT_TYPE) + n1 * irit.sc(scl), irit.E2) + pt1)
irit.color(n1, irit.YELLOW)
n2 = (irit.coerce(
irit.coerce(pt2, irit.POINT_TYPE) + n2 * irit.sc(scl), irit.E2) + pt2)
irit.color(n2, irit.CYAN)
irit.view(irit.list(n1, n2, pt1, pt2, ptt1, ptt2, bg_obj), irit.ON)
def tagcurve(crv, n, len):
tmin = irit.FetchRealObject(irit.coord(irit.pdomain(crv), 1))
tmax = irit.FetchRealObject(irit.coord(irit.pdomain(crv), 2))
dt = (tmax - tmin) / float(n - 1)
retval = irit.nil()
t = tmin
i = 1
while (i <= n):
pt = irit.coerce(irit.ceval(crv, t), irit.POINT_TYPE)
nrml = irit.coerce(irit.cnormal(crv, t), irit.VECTOR_TYPE)
irit.snoc(
irit.coerce(pt - nrml * len, irit.E2) +
irit.coerce(pt + nrml * len, irit.E2), retval)
t = t + dt
i = i + 1
return retval
def crvlength(crv, n):
retval = 0
pd = irit.pdomain(crv)
t1 = irit.nth(pd, 1)
t2 = irit.nth(pd, 2)
dt = (t2 - t1) / n
pt1 = irit.coerce(irit.ceval(crv, irit.FetchRealObject(t1)), irit.E3)
i = 1
while (i <= n):
pt2 = irit.coerce(
irit.ceval(crv,
irit.FetchRealObject(t1) +
irit.FetchRealObject(dt) * i), irit.E3)
retval = retval + distptpt(pt1, pt2)
pt1 = pt2
i = i + 1
return retval
def uvpos2pt(srf, pt, mindist):
pt = irit.coerce(pt, irit.POINT_TYPE)
uvpt = irit.srfptdst(srf, irit.Fetch3TupleObject(pt), mindist, 0.001,
1e-010)
e3pt = irit.seval(srf, irit.FetchRealObject(irit.coord(uvpt, 0)),
irit.FetchRealObject(irit.coord(uvpt, 1)))
e3nrml = irit.snormal(srf, irit.FetchRealObject(irit.coord(uvpt, 0)),
irit.FetchRealObject(irit.coord(uvpt, 1)))
edge = (irit.coerce(pt, irit.E3) + e3pt)
nedge = (e3pt +
irit.coerce(irit.coerce(e3pt, irit.POINT_TYPE) - e3nrml, irit.E3))
irit.color(e3pt, irit.MAGENTA)
irit.adwidth(e3pt, 3)
irit.color(pt, irit.YELLOW)
irit.color(edge, irit.CYAN)
irit.color(nedge, irit.GREEN)
retval = irit.list(e3pt, pt, edge, nedge)
return retval
def canonicalh(f, g, deg, c, ptype):
net = irit.nil()
t = irit.ceval(g, 1)
g2 = g * irit.sc(1 / irit.FetchRealObject(irit.coord(t, 1)))
f2 = irit.cregion(f, 0, irit.FetchRealObject(irit.coord(t, 1)))
f_p = irit.coerce(f2, irit.POWER_TYPE)
tmp = irit.ffsplit(f_p)
i = 1
while (i <= c):
bm = irit.coord(irit.coord(irit.nth(tmp, i), deg), 1)
tmp2 = irit.coerce(irit.nth(tmp, i), irit.BEZIER_TYPE) * irit.sc(
1 / irit.FetchRealObject(bm))
irit.snoc(
irit.coerce(irit.coerce(irit.compose(tmp2, g2), irit.BEZIER_TYPE),
irit.E1), net)
i = i + 1
retval = irit.ffmerge(net, ptype)
return retval
def evalsrfrayinter(raypt, raydir, srf):
raygeom = irit.list(
irit.coerce(irit.point(raypt[0], raypt[1], raypt[2]), irit.E3) +
irit.coerce(
irit.point(raypt[0], raypt[1], raypt[2]) +
irit.vector(raydir[0], raydir[1], raydir[2]), irit.E3),
irit.point(raypt[0], raypt[1], raypt[2]))
irit.color(raygeom, irit.MAGENTA)
interpts = irit.srayclip(raypt, raydir, srf)
numinters = irit.FetchRealObject(irit.nth(interpts, 1))
intere3 = irit.nil()
i = 1
while (i <= numinters):
irit.snoc(irit.nth(interpts, i * 2 + 1), intere3)
i = i + 1
irit.color(intere3, irit.YELLOW)
retval = irit.list(raygeom, intere3)
return retval
def comparecurvaturecrvevals(c):
c = irit.coerce(c, irit.KV_OPEN)
tmin = irit.FetchRealObject(irit.nth(irit.pdomain(c), 1))
tmax = irit.FetchRealObject(irit.nth(irit.pdomain(c), 2))
t = tmin
dt = (tmax - tmin) / 100.0
crvtrcrv = irit.cnrmlcrv(c)
while (t <= tmax):
kn = irit.ceval(crvtrcrv, t)
k1 = math.sqrt(
irit.FetchRealObject(
irit.coerce(kn, irit.VECTOR_TYPE) *
irit.coerce(kn, irit.VECTOR_TYPE)))
k2 = irit.FetchRealObject(irit.ccrvtreval(c, t))
if (abs(k1 - k2) > 1e-05):
irit.printf(
"mismatch in curve curvature evaluation (%.13f vs. %.13f)\n",
irit.list(k1, k2))
t = t + dt
def rigidmotionpos(cnew, c):
t = irit.FetchRealObject(irit.nth(irit.pdomain(c), 1))
pos = irit.coerce(irit.ceval(c, t), irit.VECTOR_TYPE)
tn = irit.ctangent(c, t, 1)
retval = cnew * \
irit.rz( math.atan2( irit.FetchRealObject(irit.coord( tn, 1 )),
irit.FetchRealObject(irit.coord( tn, 0 )) ) * \
180/math.pi ) * \
irit.trans( irit.Fetch3TupleObject(pos) )
return retval
def getbisectlines( crv1, crv2, cntr, n, start, end ):
if ( start == (-1 ) ):
start = 0
if ( end == (-1 ) ):
end = irit.SizeOf( cntr ) - 1
retval = irit.nil( )
ii = start
while ( ii <= end ):
i = irit.floor( ii )
pt = irit.coord( cntr, i )
pt1 = irit.ceval( crv1, irit.coord( pt, 0 ) )
pt2 = irit.ceval( crv2, irit.coord( pt, 1 ) )
nrml1 = irit.cnormalplnr( crv1, irit.coord( pt, 0 ) )
nrml2 = irit.cnormalplnr( crv2, irit.coord( pt, 1 ) )
interpts = irit.ptslnln( irit.coerce( pt1, irit.POINT_TYPE ), nrml1, irit.coerce( pt2, irit.POINT_TYPE ), nrml2 )
irit.snoc( irit.coerce( pt1, irit.E2 ) + irit.coerce( irit.nth( interpts, 1 ), irit.E2 ) + irit.coerce( pt2, irit.E2 ), retval )
ii = ii + ( end - start - 1 )/n - 1e-005
irit.color( retval, irit.CYAN )
irit.awidth( retval, 0.0001 )
return retval
def positioncurvature(srf, u, v):
eps = 1e-012
c = irit.circle((0, 0, 0), 1)
k = irit.scrvtreval(srf, u, v, 1)
r1 = irit.max(
irit.min(1.0 / (irit.FetchRealObject(irit.nth(k, 1)) + eps), 1000),
(-1000))
r2 = irit.max(
irit.min(1.0 / (irit.FetchRealObject(irit.nth(k, 3)) + eps), 1000),
(-1000))
v1 = irit.nth(k, 2)
v2 = irit.nth(k, 4)
p = irit.seval(srf, u, v)
n = irit.snormal(srf, u, v)
d1 = v1 ^ n
d2 = v2 ^ n
c1 = c * \
irit.sc( r1 ) * \
irit.rotz2v( irit.Fetch3TupleObject(d1) ) * \
irit.trans( irit.Fetch3TupleObject(irit.coerce( p, irit.VECTOR_TYPE ) + n * r1 ))
c2 = c * \
irit.sc( r2 ) * \
irit.rotz2v( irit.Fetch3TupleObject(d2) ) * \
irit.trans( irit.Fetch3TupleObject(irit.coerce( p, irit.VECTOR_TYPE ) + n * r2) )
retval = irit.list(
p, c1, c2,
p + irit.coerce(irit.coerce(p, irit.POINT_TYPE) + v1, irit.E3),
p + irit.coerce(irit.coerce(p, irit.POINT_TYPE) + v2, irit.E3),
positionasymptotes(srf, u, v))
irit.adwidth(retval, 2)
irit.color(retval, irit.YELLOW)
return retval
def displayobjobjhdres( o1, o2, eps, onesided ):
global glbltransx
hdres = irit.hausdorff( o1, o2, eps, onesided )
dist = irit.nth( hdres, 1 )
param1 = irit.nth( hdres, 2 )
if ( onesided ):
dtype = "one sided "
else:
dtype = "two sided "
if ( irit.SizeOf( param1 ) == 0 ):
pt1 = irit.coerce( o1, irit.E3 )
else:
i = 1
while ( i <= irit.SizeOf( param1 ) ):
t = irit.nth( param1, i )
irit.printf( "%shausdorff distance %f detected at t1 = %f\n", irit.list( dtype, dist, t ) )
i = i + 1
pt1 = irit.ceval( o1, irit.FetchRealObject(t) )
param2 = irit.nth( hdres, 3 )
if ( irit.SizeOf( param2 ) == 0 ):
pt2 = irit.coerce( o2, irit.E3 )
else:
i = 1
while ( i <= irit.SizeOf( param2 ) ):
t = irit.FetchRealObject(irit.nth( param2, i ))
irit.printf( "%shausdorff distance %f detected at t2 = %f\n", irit.list( dtype, dist, t ) )
i = i + 1
pt2 = irit.ceval( o2, t )
irit.color( pt1, irit.MAGENTA )
irit.color( o1, irit.MAGENTA )
irit.color( pt2, irit.YELLOW )
irit.color( o2, irit.YELLOW )
l = ( pt1 + pt2 )
if ( onesided == 0 ):
irit.attrib( l, "dwidth", irit.GenIntObject(3 ))
all = irit.list( o1, o2, pt1, pt2, l )
irit.snoc( all * irit.tx( glbltransx ), glblres )
glbltransx = ( glbltransx + 0.5 )
irit.interact( all )
def genrandomcrv(d, n, size):
ctlpts = irit.nil()
i = 1
while (i <= n):
irit.snoc(
irit.ctlpt(irit.E2, irit.random((-size), size),
irit.random((-size), size)), ctlpts)
i = i + 1
retval = irit.cbspline(
d,
ctlpts * irit.tx(irit.random((-1), 1)) * irit.ty(irit.random((-1), 1)),
irit.list(irit.KV_PERIODIC))
retval = irit.coerce(retval, irit.KV_OPEN)
return retval
def evaloneflecnodalvecs(srf, pts, size):
retval = irit.nil()
dusrf = irit.sderive(srf, irit.COL)
dvsrf = irit.sderive(srf, irit.ROW)
i = 1
while (i <= irit.SizeOf(pts)):
pt = irit.nth(pts, i)
vec = irit.coerce( irit.seval( dusrf,
irit.FetchRealObject(irit.coord( pt, 1 )),
irit.FetchRealObject(irit.coord( pt, 2 )) ), irit.VECTOR_TYPE ) * \
irit.coord( pt, 3 ) + \
irit.coerce( irit.seval( dvsrf,
irit.FetchRealObject(irit.coord( pt, 1 )),
irit.FetchRealObject(irit.coord( pt, 2 )) ), irit.VECTOR_TYPE ) * \
irit.coord( pt, 4 )
vec = irit.normalizeVec(vec) * size
pt = irit.seval(srf, irit.FetchRealObject(irit.coord(pt, 1)),
irit.FetchRealObject(irit.coord(pt, 2)))
irit.snoc(
pt + irit.coerce(irit.coerce(pt, irit.POINT_TYPE) + vec, irit.E3),
retval)
i = i + 1
return retval
def evalantipodalptsoncrv( crv ):
aps = irit.antipodal( crv, 0.001, 1e-014 )
irit.printf( "%d antipodal points detected\n", irit.list( irit.SizeOf( aps ) ) )
retval = irit.nil( )
diam = 0
i = 1
while ( i <= irit.SizeOf( aps ) ):
ap = irit.nth( aps, i )
t1 = irit.coord( ap, 1 )
t2 = irit.coord( ap, 2 )
pt1 = irit.ceval( crv, irit.FetchRealObject(t1) )
pt2 = irit.ceval( crv, irit.FetchRealObject(t2) )
if ( irit.dstptpt( irit.coerce( pt1, irit.POINT_TYPE ),
irit.coerce( pt2, irit.POINT_TYPE ) ) > diam ):
diam = irit.dstptpt( irit.coerce( pt1, irit.POINT_TYPE ),
irit.coerce( pt2, irit.POINT_TYPE ) )
diamline = pt1 + pt2
irit.snoc( irit.list( pt1 + pt2, pt1 * irit.tx( 0 ), pt2 * irit.tx( 0 ) ), retval )
i = i + 1
irit.color( retval, irit.YELLOW )
irit.color( diamline, irit.CYAN )
irit.adwidth( diamline, 3 )
irit.snoc( irit.list( diamline ), retval )
return retval
def computeorthovector(theta1, theta2, phi1, phi2):
theta1d = theta1 * math.pi / 180
theta2d = theta2 * math.pi / 180
phi1d = phi1 * math.pi / 180
phi2d = phi2 * math.pi / 180
pt1 = irit.point(
math.cos(theta1d) * math.cos(phi1d),
math.cos(theta1d) * math.sin(phi1d), math.sin(theta1d))
pt2 = irit.point(
math.cos(theta2d) * math.cos(phi2d),
math.cos(theta2d) * math.sin(phi2d), math.sin(theta2d))
retval = irit.coerce(irit.normalizePt(pt1 ^ pt2), irit.VECTOR_TYPE)
irit.attrib(retval, "dwidth", irit.GenRealObject(3))
irit.color(retval, irit.GREEN)
return retval
