Shows how to create grapical objects to render lines and rectangles in 3D space.
- See also
- Bounding Box Example, Random Lines
1 sdh=io.LoadPDB(
'sdh.pdb')
2 helix=sdh.Select(
'rnum=75:78 and cname=A and aname=CA,C,N,O')
3 res_a=helix.residues[0]
4 res_b=helix.residues[-1]
6 def MakePlane(name, pt1, pt2, pt3):
7 p1=[pt1, pt2, pt3, pt2+(pt1-pt2)+(pt3-pt2)]
9 p1=[c1+(p-c1)*1.5
for p
in p1]
10 plane=gfx.Quad(name, *p1)
11 plane.SetLineWidth(1.0)
12 plane.SetFillColor(gfx.Color(0.3, 0.7, 0.3, 0.5))
15 r1_n=res_a.FindAtom(
"N").pos
16 r1_ca=res_a.FindAtom(
"CA").pos
17 r1_c=res_a.FindAtom(
"C").pos
18 MakePlane(
"Plane1", r1_n, r1_ca, r1_c)
19 r2_ca=res_b.FindAtom(
"CA").pos
20 r2_c=res_b.FindAtom(
"C").pos
21 r2_o=res_b.FindAtom(
"O").pos
22 MakePlane(
"Plane2", r2_ca, r2_c, r2_o)
24 ca_dist=gfx.PrimList(
"Calpha dist")
25 ca_dist.AddLine(r1_ca, r2_ca, gfx.GREEN)
27 go=gfx.Entity(
'helix2', gfx.SIMPLE, helix)
29 scene.SetBackground(gfx.WHITE)
30 go.SetRenderMode(gfx.CUSTOM)
31 scene.center=go.center
