Python Tutorials | (back to the list of tutorials) |
add_library('igeo') size( 480, 360, IG.GL ) cpts1 = [] cpts1.append(IVec(-30, 10, 0)) cpts1.append(IVec(-10, 10, 0)) cpts1.append(IVec(-10, 30, 0)) cpts1.append(IVec(-30, 30, 0)) # curve 1 (red) ICurve(cpts1, 3).clr(1.,0,0) cpts2 = [] for i in range(10) : if i%2==0 : cpts2.append(IVec(i*10, 0, 0)) else : cpts2.append(IVec(i*10, 10, 0)) # curve 2 (blue) ICurve(cpts2, 1).clr(0,0,1.) cpts3 = [] for i in range(16) : if i%4==0 : cpts3.append(IVec(-30, -10, i*5)) elif i%4==1 : cpts3.append(IVec(-10, -10, i*5)) elif i%4==2 : cpts3.append(IVec(-10, -30, i*5)) else : cpts3.append(IVec(-30, -30, i*5)) # same with i%4==3 # curve 3 (cyan) ICurve(cpts3, 3).clr(0,1.,1.)
add_library('igeo') size( 480, 360, IG.GL ) cpts1 = [] cpts1.append([]) cpts1[0].append(IVec( 0, 0, 0)) cpts1[0].append(IVec( 0,-30, 0)) cpts1.append([]) cpts1[1].append(IVec(-30, 0, 0)) cpts1[1].append(IVec(-30,-30, 0)) # surface 1 (gray) ISurface(cpts1) cpts2 = [] for i in range(10) : cpts2.append([]) if i%2==0 : cpts2[i].append(IVec(i*10,0,0)) cpts2[i].append(IVec(i*10,0,20)) else : cpts2[i].append(IVec(i*10,-10,0)) cpts2[i].append(IVec(i*10,10,10)) # surface 2 (purple) ISurface(cpts2).clr(.5,0,1) cpts3 = [] for i in range(4) : cpts3.append([]) for j in range(4) : if (i==0 or i==3) and (j==1 or j==2) : cpts3[i].append(IVec(-i*10, j*10, 20)) else : cpts3[i].append(IVec(-i*10, j*10, 0)) # surface 3 (pink) ISurface(cpts3,3,3).clr(1,.5,1)
add_library('igeo') size( 480, 360, IG.GL ) cpts1 = [] for i in range(10) : cpts1.append([]) for j in range(10) : if (i+j)%2==0 : cpts1[i].append(IVec(i*5, -j*5-30, (i+j)*2)) else : cpts1[i].append(IVec(i*5, -j*5-30, (i+j-1)*2)) # mesh 1 (cyan) IMesh(cpts1).clr(0,1.,1.) divNum=30 cpts2 = [] for i in range(10) : cpts2.append([]) for j in range(divNum+1) : radius = 30 - i*3 angle = 2 * PI / divNum * j cpts2[i].append(IVec(cos(angle)*radius, sin(angle)*radius, i*i*.5)) # mesh 2 (red) IMesh(cpts2).clr(1.,0,0)
Note that the use of constant PI to calculate the angle to be used in
trigonometric function. divNum is dividing 2 * PI,
not 360 because the unit of sin() and cos() is not degree
but radian.
Please also note that the length of the array cpts2 in the
second dimension is not divNum but divNum+1
to match points on the end edge with points on the start edge.