I want to make a spikiness effect - when model is transformed so the spikes will poke out of it. Tried to create some with not very good result. Maybe you can help and create better? Here, this can be a template:
Graphics3D 800,600
Const sphere_segments = 8, segments = 48
PositionEntity CreateCamera(), 0, 0, -10
RotateEntity CreateLight(), 45, 45, 0
PositionEntity CreateSphere(sphere_segments), -6, 4, 0
PositionEntity Make_Spiky(CreateSphere(sphere_segments)), -2, 4, 0
PositionEntity CreateCube(), 2, 4, 0
PositionEntity Make_Spiky(CreateCube()), 6, 4, 0
PositionEntity CreateCone(segments), -6, 0, 0
PositionEntity Make_Spiky(CreateCone(segments)), -2, 0, 0
PositionEntity CreateCylinder(segments), 2, 0, 0
PositionEntity Make_Spiky(CreateCylinder(segments)), 6, 0, 0
mesh=LoadMesh("C:\Program Files\Blitz3D\samples\teapot\teapot.x")
If mesh Then
PositionEntity mesh, -6, -4, 0
PositionEntity Make_Spiky(CopyMesh(mesh)), -2, -4, 0
End If
mesh=LoadMesh("C:\Program Files\Blitz3D\samples\anim\makbot\mak_robotic.3DS")
If mesh Then
ScaleMesh mesh, 0.1, 0.1, 0.1
PositionMesh mesh, 0, -2, 0
PositionEntity mesh, 2, -4, 0
PositionEntity Make_Spiky(CopyMesh(mesh)), 6, -4, 0
End If
RenderWorld
Flip
WaitKey
Function make_spiky(mesh)
;========
For n1 = 1 To CountSurfaces(mesh)
s = GetSurface(mesh, n1)
q = CountTriangles(s)
For n2 = 0 To q - 1
v0=TriangleVertex(s,n2,0)
v1=TriangleVertex(s,n2,1)
v2=TriangleVertex(s,n2,2)
d# = 0.5
x# = Rnd(-d#, d#) + (VertexX(s,v0)+VertexX(s,v1)+VertexX(s,v2))/3
y# = Rnd(-d#, d#) + (VertexY(s,v0)+VertexY(s,v1)+VertexY(s,v2))/3
z# = Rnd(-d#, d#) + (VertexZ(s,v0)+VertexZ(s,v1)+VertexZ(s,v2))/3
v=AddVertex(s,x#,y#,z#)
AddTriangle s,v0,v1,v
AddTriangle s,v1,v2,v
AddTriangle s,v2,v0,v
Next
Next
UpdateNormals mesh
EntityFX mesh,16
;========
Return mesh
End Function
Function vertex_distance#(s, v1, v2)
dx# = VertexX(s, v1) - VertexX(s, v2)
dy# = VertexY(s, v1) - VertexY(s, v2)
dz# = VertexZ(s, v1) - VertexZ(s, v2)
Return Sqr(dx# * dx# + dy# * dy# + dz# * dz#)
End Function
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