All Samples(7849) | Call(6913) | Derive(0) | Import(936)
cos(x) Return the cosine of x (measured in radians).
src/s/u/surukuku-HEAD/trunk/Samples/OpenGL/gears.py surukuku(Download)
from OpenGL.GL import *
from OpenGL.GLUT import *
import sys, time
from math import sin,cos,sqrt,pi
def gear(inner_radius, outer_radius, width, teeth, tooth_depth):
r0 = inner_radius
glBegin(GL_QUAD_STRIP)
for i in range(teeth + 1):
angle = i * 2.0 * pi / teeth
glVertex3f(r0*cos(angle), r0*sin(angle), width*0.5)
glVertex3f(r1*cos(angle), r1*sin(angle), width*0.5)
glVertex3f(r0*cos(angle), r0*sin(angle), width*0.5)
glVertex3f(r1*cos(angle+3*da), r1*sin(angle+3*da), width*0.5)
da = 2.0*pi / teeth / 4.0
for i in range(teeth):
angle = i * 2.0*pi / teeth
glVertex3f(r1*cos(angle), r1*sin(angle), width*0.5)
glVertex3f(r2*cos(angle+da), r2*sin(angle+da), width*0.5)
glVertex3f(r2*cos(angle+2*da), r2*sin(angle+2*da), width*0.5)
glVertex3f(r1*cos(angle+3*da), r1*sin(angle+3*da), width*0.5)
glBegin(GL_QUAD_STRIP)
for i in range(teeth + 1):
angle = i * 2.0*pi / teeth
glVertex3f(r1*cos(angle), r1*sin(angle), -width*0.5)
glVertex3f(r0*cos(angle), r0*sin(angle), -width*0.5)
glVertex3f(r1*cos(angle+3*da), r1*sin(angle+3*da),-width*0.5)
glVertex3f(r0*cos(angle), r0*sin(angle), -width*0.5)
da = 2.0*pi / teeth / 4.0
for i in range(teeth):
angle = i * 2.0*pi / teeth
glVertex3f(r1*cos(angle+3*da), r1*sin(angle+3*da),-width*0.5)
glVertex3f(r2*cos(angle+2*da), r2*sin(angle+2*da),-width*0.5)
glVertex3f(r2*cos(angle+da), r2*sin(angle+da), -width*0.5)
glVertex3f(r1*cos(angle), r1*sin(angle), -width*0.5)
glEnd()
# draw outward faces of teeth
glBegin(GL_QUAD_STRIP);
for i in range(teeth):
angle = i * 2.0*pi / teeth
glVertex3f(r1*cos(angle), r1*sin(angle), width*0.5)
for i in range(teeth):
angle = i * 2.0*pi / teeth
glVertex3f(r1*cos(angle), r1*sin(angle), width*0.5)
glVertex3f(r1*cos(angle), r1*sin(angle), -width*0.5)
u = r2*cos(angle+da) - r1*cos(angle)
v = r2*sin(angle+da) - r1*sin(angle)
len = sqrt(u*u + v*v)
u = u / len
v = v / len
glNormal3f(v, -u, 0.0)
glVertex3f(r2*cos(angle+da), r2*sin(angle+da), width*0.5)
glVertex3f(r2*cos(angle+da), r2*sin(angle+da), -width*0.5)
glNormal3f(cos(angle), sin(angle), 0.0)
glVertex3f(r2*cos(angle+2*da), r2*sin(angle+2*da), width*0.5)
glVertex3f(r2*cos(angle+da), r2*sin(angle+da), -width*0.5)
glNormal3f(cos(angle), sin(angle), 0.0)
glVertex3f(r2*cos(angle+2*da), r2*sin(angle+2*da), width*0.5)
glVertex3f(r2*cos(angle+2*da), r2*sin(angle+2*da),-width*0.5)
u = r1*cos(angle+3*da) - r2*cos(angle+2*da)
v = r1*sin(angle+3*da) - r2*sin(angle+2*da)
glNormal3f(v, -u, 0.0)
glVertex3f(r1*cos(angle+3*da), r1*sin(angle+3*da), width*0.5)
glVertex3f(r1*cos(angle+3*da), r1*sin(angle+3*da),-width*0.5)
glNormal3f(cos(angle), sin(angle), 0.0)
glVertex3f(r1*cos(0), r1*sin(0), width*0.5)
glVertex3f(r1*cos(0), r1*sin(0), -width*0.5)
glBegin(GL_QUAD_STRIP)
for i in range(teeth + 1):
angle = i * 2.0*pi / teeth;
glNormal3f(-cos(angle), -sin(angle), 0.0)
glVertex3f(r0*cos(angle), r0*sin(angle), -width*0.5)
glVertex3f(r0*cos(angle), r0*sin(angle), width*0.5)
glEnd()
src/p/y/python-opengles-HEAD/examples/gears.py python-opengles(Download)
import egl from gles import * import time from math import sin,cos,sqrt,pi def float2fixed(values): ret = tuple([int(v*pow(2,16)) for v in values])
angle = i * 2.0 * pi / teeth
angle_next = (i-1) * 2.0 * pi / teeth
# Triangle 1
v1 = (r0*cos(angle), r0*sin(angle), width*0.5)
v2 = (r1*cos(angle), r1*sin(angle), width*0.5)
v3 = (r1*cos(angle+3*da), r1*sin(angle+3*da), width*0.5)
vertices.append( float2fixed(v1) )
icount += 3
# Triangle 2
v1 = (r0*cos(angle), r0*sin(angle), width*0.5)
v2 = (r1*cos(angle_next+3*da), r1*sin(angle_next+3*da), width*0.5)
v3 = (r1*cos(angle), r1*sin(angle), width*0.5)
vertices.append( float2fixed(v1) )
icount += 3
# Triangle 3
v1 = (r0*cos(angle), r0*sin(angle), width*0.5)
v2 = (r0*cos(angle_next), r0*sin(angle_next), width*0.5)
v3 = (r1*cos(angle_next+3*da), r1*sin(angle_next+3*da), width*0.5)
vertices.append( float2fixed(v1) )
for i in range(teeth):
angle = i * 2.0*pi / teeth
v1 = (r1*cos(angle), r1*sin(angle), width*0.5)
v2 = (r2*cos(angle+da), r2*sin(angle+da), width*0.5)
v3 = (r2*cos(angle+2*da), r2*sin(angle+2*da), width*0.5)
vertices.append( float2fixed(v1) )
normals.append( (normal,normal,normal) )
icount += 3
v1 = (r1*cos(angle), r1*sin(angle), width*0.5)
v2 = (r2*cos(angle+2*da), r2*sin(angle+2*da), width*0.5)
v3 = (r1*cos(angle+3*da), r1*sin(angle+3*da), width*0.5)
vertices.append( float2fixed(v1) )
for i in range(teeth + 1):
angle = i * 2.0*pi / teeth
angle_next = (i+1) * 2.0*pi / teeth
v1 = (r1*cos(angle), r1*sin(angle), -width*0.5)
v2 = (r0*cos(angle), r0*sin(angle), -width*0.5)
v3 = (r1*cos(angle+3*da), r1*sin(angle+3*da),-width*0.5)
vertices.append( float2fixed(v1) )
normals.append( (normal,normal,normal) )
icount += 3
v1 = (r0*cos(angle), r0*sin(angle), -width*0.5)
v2 = (r0*cos(angle_next), r0*sin(angle_next), -width*0.5)
v3 = (r1*cos(angle+3*da), r1*sin(angle+3*da),-width*0.5)
vertices.append( float2fixed(v1) )
normals.append( (normal,normal,normal) )
icount += 3
v1 = (r1*cos(angle+3*da), r1*sin(angle+3*da),-width*0.5)
v2 = (r0*cos(angle_next), r0*sin(angle_next), -width*0.5)
v3 = (r1*cos(angle_next), r1*sin(angle_next), -width*0.5)
vertices.append( float2fixed(v1) )
for i in range(teeth):
angle = i * 2.0*pi / teeth
v1 = (r1*cos(angle+3*da), r1*sin(angle+3*da),-width*0.5)
v2 = (r2*cos(angle+2*da), r2*sin(angle+2*da),-width*0.5)
v3 = (r2*cos(angle+da), r2*sin(angle+da), -width*0.5)
vertices.append( float2fixed(v1) )
normals.append( (normal,normal,normal) )
icount += 3
v1 = (r1*cos(angle), r1*sin(angle), -width*0.5)
v2 = (r1*cos(angle+3*da), r1*sin(angle+3*da),-width*0.5)
v3 = (r2*cos(angle+da), r2*sin(angle+da), -width*0.5)
vertices.append( float2fixed(v1) )
# Outward faces of teeth
angle = 0 * 2.0*pi / teeth
normal = float2fixed((cos(angle), sin(angle), 0.0))
for i in range(teeth):
angle = i * 2.0*pi / teeth
angle_next = (i-1) * 2.0*pi / teeth
# # # Right side of a teeth
v1 = float2fixed((r1*cos(angle), r1*sin(angle), width*0.5))
v2 = float2fixed((r1*cos(angle), r1*sin(angle), -width*0.5))
u = r2*cos(angle+da) - r1*cos(angle)
u = u / len
v = v / len
v3 = float2fixed((r2*cos(angle+da), r2*sin(angle+da), width*0.5))
vertices.append( v1 )
vertices.append( v2 )
vertices.append( v3 )
indices.append( [icount, icount+1, icount+2] )
normals.append( (normal,normal,normal) )
icount += 3
v1 = float2fixed((r2*cos(angle+da), r2*sin(angle+da), width*0.5))
v2 = float2fixed((r1*cos(angle), r1*sin(angle), -width*0.5))
v1 = float2fixed((r2*cos(angle+da), r2*sin(angle+da), width*0.5))
v2 = float2fixed((r1*cos(angle), r1*sin(angle), -width*0.5))
v3 = float2fixed((r2*cos(angle+da), r2*sin(angle+da), -width*0.5))
vertices.append( v1 )
vertices.append( v2 )
vertices.append( v3 )
normal = float2fixed((v, -u, 0.0))
# # # Left side of a teeth
normal = float2fixed((cos(angle), sin(angle), 0.0))
v1 = float2fixed((r1*cos(angle+3*da), r1*sin(angle+3*da), width*0.5))
v2 = float2fixed((r2*cos(angle+2*da), r2*sin(angle+2*da), width*0.5))
v3 = float2fixed((r2*cos(angle+2*da), r2*sin(angle+2*da),-width*0.5))
indices.append( [icount, icount+1, icount+2] )
normals.append( (normal,normal,normal) )
icount += 3
u = r1*cos(angle+3*da) - r2*cos(angle+2*da)
v = r1*sin(angle+3*da) - r2*sin(angle+2*da)
v1 = float2fixed((r1*cos(angle+3*da), r1*sin(angle+3*da), width*0.5))
v2 = float2fixed((r2*cos(angle+2*da), r2*sin(angle+2*da),-width*0.5))
v3 = float2fixed((r1*cos(angle+3*da), r1*sin(angle+3*da),-width*0.5))
normal = float2fixed((v, -u, 0.0))
# # # Top of a teeth
v1 = float2fixed((r2*cos(angle+2*da), r2*sin(angle+2*da), width*0.5))
v2 = float2fixed((r2*cos(angle+da), r2*sin(angle+da), width*0.5))
v3 = float2fixed((r2*cos(angle+da), r2*sin(angle+da), -width*0.5))
vertices.append( v1 )
normals.append( (normal,normal,normal) )
icount += 3
v1 = float2fixed((r2*cos(angle+2*da), r2*sin(angle+2*da), width*0.5))
v2 = float2fixed((r2*cos(angle+da), r2*sin(angle+da), -width*0.5))
v3 = float2fixed((r2*cos(angle+2*da), r2*sin(angle+2*da),-width*0.5))
vertices.append( v1 )
icount += 3
# # # Bottom of a teeth
v1 = float2fixed((r1*cos(angle), r1*sin(angle), width*0.5))
v2 = float2fixed((r1*cos(angle_next+3*da), r1*sin(angle_next+3*da), width*0.5))
v3 = float2fixed((r1*cos(angle_next+3*da), r1*sin(angle_next+3*da), -width*0.5))
vertices.append( v1 )
normals.append( (normal,normal,normal) )
icount += 3
v1 = float2fixed((r1*cos(angle), r1*sin(angle), width*0.5))
v2 = float2fixed((r1*cos(angle_next+3*da), r1*sin(angle_next+3*da), -width*0.5))
v3 = float2fixed((r1*cos(angle), r1*sin(angle), -width*0.5))
vertices.append( v1 )
vertices.append( v2 )
vertices.append( v3 )
indices.append( [icount, icount+1, icount+2] )
normals.append( (normal,normal,normal) )
icount += 3
normal = float2fixed((cos(angle), sin(angle), 0.0))
for i in range(teeth + 1):
angle = i * 2.0*pi / teeth;
angle_next = (i+1) * 2.0*pi / teeth
normal = float2fixed((-cos(angle), -sin(angle), 0.0))
normal_next = float2fixed((-cos(angle_next), -sin(angle_next), 0.0))
v1 = float2fixed((r0*cos(angle), r0*sin(angle), -width*0.5)) # 1
v2 = float2fixed((r0*cos(angle), r0*sin(angle), width*0.5)) # 2
v3 = float2fixed((r0*cos(angle_next), r0*sin(angle_next), width*0.5)) # 2b
normals.append( (normal,normal,normal_next) )
icount += 3
v1 = float2fixed((r0*cos(angle), r0*sin(angle), -width*0.5)) # 1
v2 = float2fixed((r0*cos(angle_next), r0*sin(angle_next), width*0.5)) # 2b
v3 = float2fixed((r0*cos(angle_next), r0*sin(angle_next), -width*0.5)) # 1b
vertices.append( v1 )
src/s/u/surukuku-HEAD/Samples/OpenGL/gears.py surukuku(Download)
from OpenGL.GL import *
from OpenGL.GLUT import *
import sys, time
from math import sin,cos,sqrt,pi
def gear(inner_radius, outer_radius, width, teeth, tooth_depth):
r0 = inner_radius
glBegin(GL_QUAD_STRIP)
for i in range(teeth + 1):
angle = i * 2.0 * pi / teeth
glVertex3f(r0*cos(angle), r0*sin(angle), width*0.5)
glVertex3f(r1*cos(angle), r1*sin(angle), width*0.5)
glVertex3f(r0*cos(angle), r0*sin(angle), width*0.5)
glVertex3f(r1*cos(angle+3*da), r1*sin(angle+3*da), width*0.5)
da = 2.0*pi / teeth / 4.0
for i in range(teeth):
angle = i * 2.0*pi / teeth
glVertex3f(r1*cos(angle), r1*sin(angle), width*0.5)
glVertex3f(r2*cos(angle+da), r2*sin(angle+da), width*0.5)
glVertex3f(r2*cos(angle+2*da), r2*sin(angle+2*da), width*0.5)
glVertex3f(r1*cos(angle+3*da), r1*sin(angle+3*da), width*0.5)
glBegin(GL_QUAD_STRIP)
for i in range(teeth + 1):
angle = i * 2.0*pi / teeth
glVertex3f(r1*cos(angle), r1*sin(angle), -width*0.5)
glVertex3f(r0*cos(angle), r0*sin(angle), -width*0.5)
glVertex3f(r1*cos(angle+3*da), r1*sin(angle+3*da),-width*0.5)
glVertex3f(r0*cos(angle), r0*sin(angle), -width*0.5)
da = 2.0*pi / teeth / 4.0
for i in range(teeth):
angle = i * 2.0*pi / teeth
glVertex3f(r1*cos(angle+3*da), r1*sin(angle+3*da),-width*0.5)
glVertex3f(r2*cos(angle+2*da), r2*sin(angle+2*da),-width*0.5)
glVertex3f(r2*cos(angle+da), r2*sin(angle+da), -width*0.5)
glVertex3f(r1*cos(angle), r1*sin(angle), -width*0.5)
glEnd()
# draw outward faces of teeth
glBegin(GL_QUAD_STRIP);
for i in range(teeth):
angle = i * 2.0*pi / teeth
glVertex3f(r1*cos(angle), r1*sin(angle), width*0.5)
for i in range(teeth):
angle = i * 2.0*pi / teeth
glVertex3f(r1*cos(angle), r1*sin(angle), width*0.5)
glVertex3f(r1*cos(angle), r1*sin(angle), -width*0.5)
u = r2*cos(angle+da) - r1*cos(angle)
v = r2*sin(angle+da) - r1*sin(angle)
len = sqrt(u*u + v*v)
u = u / len
v = v / len
glNormal3f(v, -u, 0.0)
glVertex3f(r2*cos(angle+da), r2*sin(angle+da), width*0.5)
glVertex3f(r2*cos(angle+da), r2*sin(angle+da), -width*0.5)
glNormal3f(cos(angle), sin(angle), 0.0)
glVertex3f(r2*cos(angle+2*da), r2*sin(angle+2*da), width*0.5)
glVertex3f(r2*cos(angle+da), r2*sin(angle+da), -width*0.5)
glNormal3f(cos(angle), sin(angle), 0.0)
glVertex3f(r2*cos(angle+2*da), r2*sin(angle+2*da), width*0.5)
glVertex3f(r2*cos(angle+2*da), r2*sin(angle+2*da),-width*0.5)
u = r1*cos(angle+3*da) - r2*cos(angle+2*da)
v = r1*sin(angle+3*da) - r2*sin(angle+2*da)
glNormal3f(v, -u, 0.0)
glVertex3f(r1*cos(angle+3*da), r1*sin(angle+3*da), width*0.5)
glVertex3f(r1*cos(angle+3*da), r1*sin(angle+3*da),-width*0.5)
glNormal3f(cos(angle), sin(angle), 0.0)
glVertex3f(r1*cos(0), r1*sin(0), width*0.5)
glVertex3f(r1*cos(0), r1*sin(0), -width*0.5)
glBegin(GL_QUAD_STRIP)
for i in range(teeth + 1):
angle = i * 2.0*pi / teeth;
glNormal3f(-cos(angle), -sin(angle), 0.0)
glVertex3f(r0*cos(angle), r0*sin(angle), -width*0.5)
glVertex3f(r0*cos(angle), r0*sin(angle), width*0.5)
glEnd()
src/l/a/Langtangen-HEAD/src/py/examples/efficiency/pyefficiency.py Langtangen(Download)
def py_loop1_sincos_x2(x):
from math import sin, cos, pow # scalar sin
for i in xrange(len(x)):
x[i] = sin(x[i])*cos(x[i]) + x[i]**2
return x
def py_loop2_sincos_x2(x):
from numpy import sin, cos
for i in xrange(len(x)):
x[i] = sin(x[i])*cos(x[i]) + x[i]**2
return x
def py_loop2b_sincos_x2(x):
from math import sin, cos # scalar sin
def py_loop2b_sincos_x2(x):
from math import sin, cos # scalar sin
for i in xrange(len(x)):
x[i] = sin(x[i])*cos(x[i]) + x[i]**2
return x
def I2(x):
# from math import sin # this is expensive: from 70 to 16!
return sin(x)*cos(x) + x**2
def py_loop4_sincos_x2(x):
from math import sin, cos
for i in xrange(len(x)):
xi = x[i]
x[i] = sin(xi)*cos(xi) + xi**2
return x
def py_loop1_2Dsincos(x, y):
u = zeros((len(x),len(y)))
from math import sin as msin, cos as mcos
def I(x, y):
return msin(x)*mcos(y)
def py_loop2_2Dsincos(x, y):
# inlined expressions
u = zeros((len(x),len(y)))
from math import sin as msin, cos as mcos
# x[i], y[j]: coordinates of grid point (i,j)
for i in xrange(len(x)):
for j in xrange(len(y)):
u[i,j] = msin(x[i])*mcos(y[j])
def py_loop3_2Dsincos(x, y):
# reverse the order of traversal
u = zeros((len(x),len(y)))
from math import sin as msin, cos as mcos
# x[i], y[j]: coordinates of grid point (i,j)
for j in xrange(len(y)):
for i in xrange(len(x)):
u[i,j] = msin(x[i])*mcos(y[j])
def I3(x, y):
return sin(x)*cos(y)
u = I3(xv, yv)
return u
def py_loop1_manyarit(x):
from math import sin, cos
for i in xrange(len(x)):
x[i] = sin(x[i])*cos(x[i]) + sin(2*x[i])*cos(2*x[i]) + \
sin(3*x[i])*cos(3*x[i]) + \
sin(4*x[i])*cos(4*x[i]) + sin(5*x[i])*cos(5*x[i])
print 'pure Python loop 1:%d x[i]=sin(x[i])*cos(x[i])+x[i]**2, x is array, scalar math.sin:' % n, t1
t2 = timer(NumPy_loop_sincos_x2, args=(x,), repetitions=20)
print 'corresponing NumPy expression x=sin(x)*cos(x)+x**2:', t2
from math import sin, cos # scalar sin, cos
t1c = timer(py_loop3_sincos_x2, args=(x,), repetitions=1)
print 'pure Python loop 1:%d x[i]=I2(x[i]), I is sin(x)*cos(x[i])+x**2:' % n, t1c
t1b = timer(py_loop4_sincos_x2, args=(x,), repetitions=1)
src/p/y/pycppad-HEAD/example/std_math.py pycppad(Download)
assert abs( arccos(a_x) - math.acos(x) ) < delta assert abs( arcsin(a_x) - math.asin(x) ) < delta assert abs( arctan(a_x) - math.atan(x) ) < delta assert abs( cos(a_x) - math.cos(x) ) < delta assert abs( cosh(a_x) - math.cosh(x) ) < delta assert abs( exp(a_x) - math.exp(x) ) < delta assert abs( log(a_x) - math.log(x) ) < delta
assert abs( arccos(a2x) - math.acos(x) ) < delta assert abs( arcsin(a2x) - math.asin(x) ) < delta assert abs( arctan(a2x) - math.atan(x) ) < delta assert abs( cos(a2x) - math.cos(x) ) < delta assert abs( cosh(a2x) - math.cosh(x) ) < delta assert abs( exp(a2x) - math.exp(x) ) < delta assert abs( log(a2x) - math.log(x) ) < delta
src/p/y/pydy-HEAD/examples/bicycle/bicycle_lib_hand.py pydy(Download)
from sympy import var
from math import sin, cos, tan, pi
def dependent_qdot(_x, _params):
"""Linear mapping from lean rate, steer rate, front wheel rate to yaw rate, rear
wheel rate, pitch rate, rear wheel contact point velocity in N[1] and N[2]
directions.
"""
q1d, q4d, q5d = _x
rr, rf, lr, ls, lf, q0, q1, q3, q4 = _params
c0 = cos(q0)
c3 = cos(q3)
c3 = cos(q3)
s0 = sin(q0)
s1 = sin(q1)
c1 = cos(q1)
c4 = cos(q4)
s3 = sin(q3)
s4 = sin(q4)
q0, q1, q3, q4 = _x
# Trigonometric functions
c0 = cos(q0)
c1 = cos(q1)
c3 = cos(q3)
c4 = cos(q4)
rr, rf, lr, ls, lf, l1, l2, l3, l4, q1, q3, q4 = _params
# Trigonometric functions
c1 = cos(q1)
c3 = cos(q3)
c4 = cos(q4)
s1 = sin(q1)
rr, rf, lr, ls, lf, l1, l2, l3, l4, mcd, mef, IC22, ICD11, ID13, ICD33, ID22, IEF11, IE13, IEF33, IE22, IF22, g = _params
# Trigonometric functions
c0 = cos(q0)
c1 = cos(q1)
c3 = cos(q3)
c4 = cos(q4)
src/p/y/pydy-HEAD/examples/bicycle/bicycle_lib.py pydy(Download)
from __future__ import division
from math import sin, cos, tan, pi
def dependent_qdot(_x, _params):
"""Linear mapping from lean rate, steer rate, front wheel rate to yaw rate, rear
wheel rate, pitch rate, rear wheel contact point velocity in N[1] and N[2]
directions.
"""
q1d, q4d, q5d = _x
rr, rf, lr, ls, lf, q0, q1, q3, q4 = _params
c0 = cos(q0)
c3 = cos(q3)
c3 = cos(q3)
s0 = sin(q0)
s1 = sin(q1)
c1 = cos(q1)
c4 = cos(q4)
s3 = sin(q3)
s4 = sin(q4)
q0, q1, q3, q4 = _x
# Trigonometric functions
c0 = cos(q0)
c1 = cos(q1)
c3 = cos(q3)
c4 = cos(q4)
rr, rf, lr, ls, lf, l1, l2, l3, l4, q1, q3, q4 = _params
# Trigonometric functions
c1 = cos(q1)
c3 = cos(q3)
c4 = cos(q4)
s1 = sin(q1)
rr, rf, lr, ls, lf, l1, l2, l3, l4, mcd, mef, IC22, ICD11, ID13, ICD33, ID22, IEF11, IE13, IEF33, IE22, IF22, g = _params
# Trigonometric functions
c0 = cos(q0)
c1 = cos(q1)
c3 = cos(q3)
c4 = cos(q4)
src/v/t/VT-USRP-daughterboard-drivers_python-HEAD/gr-trellis/src/examples/fsm_utils.py VT-USRP-daughterboard-drivers_python(Download)
0, 1, \
0, -1,\
-1, 0]) # includes Gray mapping
psk8=(2,[math.cos(2*math.pi*0/8), math.sin(2*math.pi*0/8), \
math.cos(2*math.pi*1/8), math.sin(2*math.pi*1/8), \
math.cos(2*math.pi*2/8), math.sin(2*math.pi*2/8), \
math.cos(2*math.pi*3/8), math.sin(2*math.pi*3/8), \
math.cos(2*math.pi*4/8), math.sin(2*math.pi*4/8), \
math.cos(2*math.pi*5/8), math.sin(2*math.pi*5/8), \
math.cos(2*math.pi*6/8), math.sin(2*math.pi*6/8), \
math.cos(2*math.pi*7/8), math.sin(2*math.pi*7/8)])
src/p/l/plplot-HEAD/trunk/examples/python/x18.py plplot(Download)
## r = 1. - ( (float) i / (float) NPTS ) r = z[i] x.append(r * math.cos( 2. * math.pi * 6. * i / NPTS )) y.append(r * math.sin( 2. * math.pi * 6. * i / NPTS )) for k in range(4):
y = [] z = [] x.append(math.sin( PHI(j) ) * math.cos( THETA(i) )) y.append(math.sin( PHI(j) ) * math.sin( THETA(i) )) z.append(math.cos( PHI(j) )) x.append(math.sin( PHI(j) ) * math.cos( THETA(i+1) )) y.append(math.sin( PHI(j) ) * math.sin( THETA(i+1) )) z.append(math.cos( PHI(j) )) x.append(math.sin( PHI(j+1) ) * math.cos( THETA(i+1) )) y.append(math.sin( PHI(j+1) ) * math.sin( THETA(i+1) )) z.append(math.cos( PHI(j+1) ))
y.append(math.sin( PHI(j+1) ) * math.sin( THETA(i+1) )) z.append(math.cos( PHI(j+1) )) x.append(math.sin( PHI(j+1) ) * math.cos( THETA(i) )) y.append(math.sin( PHI(j+1) ) * math.sin( THETA(i) )) z.append(math.cos( PHI(j+1) )) x.append(math.sin( PHI(j) ) * math.cos( THETA(i) )) y.append(math.sin( PHI(j) ) * math.sin( THETA(i) )) z.append(math.cos( PHI(j) ))
src/p/l/plplot-HEAD/examples/python/x18.py plplot(Download)
## r = 1. - ( (float) i / (float) NPTS ) r = z[i] x.append(r * math.cos( 2. * math.pi * 6. * i / NPTS )) y.append(r * math.sin( 2. * math.pi * 6. * i / NPTS )) for k in range(4):
y = [] z = [] x.append(math.sin( PHI(j) ) * math.cos( THETA(i) )) y.append(math.sin( PHI(j) ) * math.sin( THETA(i) )) z.append(math.cos( PHI(j) )) x.append(math.sin( PHI(j) ) * math.cos( THETA(i+1) )) y.append(math.sin( PHI(j) ) * math.sin( THETA(i+1) )) z.append(math.cos( PHI(j) )) x.append(math.sin( PHI(j+1) ) * math.cos( THETA(i+1) )) y.append(math.sin( PHI(j+1) ) * math.sin( THETA(i+1) )) z.append(math.cos( PHI(j+1) ))
y.append(math.sin( PHI(j+1) ) * math.sin( THETA(i+1) )) z.append(math.cos( PHI(j+1) )) x.append(math.sin( PHI(j+1) ) * math.cos( THETA(i) )) y.append(math.sin( PHI(j+1) ) * math.sin( THETA(i) )) z.append(math.cos( PHI(j+1) )) x.append(math.sin( PHI(j) ) * math.cos( THETA(i) )) y.append(math.sin( PHI(j) ) * math.sin( THETA(i) )) z.append(math.cos( PHI(j) ))
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