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"And" <49341109@ntnu.edu.tw> wrote:
> The file is here:
>
http://news.povray.org/povray.binaries.scene-files/thread/%3Cweb.5551a29627d064353f4ed4340%40news.povray.org%3E/
>
> You can just include it and use the macro:
>
> //------coding here------------
> #include "blending_polygon_circle_shape.inc"
>
> object{
> Shape_Polygon_To_Circle_Blending(5, x, 0.3, 0.1, 0.8)
> pigment{rgb<0.5,0.56,0.5>}
> }
>
>
> //---------------------------
>
> 1. The macro create a shape that blend a regular polygon of which center is at
> <0,0,0>, to a circle of which center at <0,0, height>.
>
> 2. The first parameter is the number of sides of the polygon.
> 3. The second parameter is a vector.
> 4. The third parameter is the circumscribed circle radius of the polygon.
> 5. The fourth parameter is the radius of the circle.
> 6. The fifth parameter is the height of the shape.
Thanks!
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"And" <49341109@ntnu.edu.tw> wrote:
> The file is here:
>
http://news.povray.org/povray.binaries.scene-files/thread/%3Cweb.5551a29627d064353f4ed4340%40news.povray.org%3E/
>
> You can just include it and use the macro:
>
> //------coding here------------
> #include "blending_polygon_circle_shape.inc"
>
> object{
> Shape_Polygon_To_Circle_Blending(5, x, 0.3, 0.1, 0.8)
> pigment{rgb<0.5,0.56,0.5>}
> }
>
>
> //---------------------------
>
> 1. The macro create a shape that blend a regular polygon of which center is at
> <0,0,0>, to a circle of which center at <0,0, height>.
>
> 2. The first parameter is the number of sides of the polygon.
> 3. The second parameter is a vector.
> 4. The third parameter is the circumscribed circle radius of the polygon.
> 5. The fourth parameter is the radius of the circle.
> 6. The fifth parameter is the height of the shape.
even it is correct, odd it is incorrect
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Attachments:
Download 'polynomcircle.jpg' (59 KB)
Preview of image 'polynomcircle.jpg'
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"And" <49341109@ntnu.edu.tw> wrote:
> Could you give me an example (code)?
>
> I never saw it.
#version 3.7;
global_settings {
}
background {rgbt<0.05, 0.05, 0.05, 0>}
#declare Default_texture = pigment {rgb 0.8}
#declare Material = texture {pigment {rgbt <0.8,0.8,0.8,0>}}
#declare height = 0.5;
#declare poly_n = 3;
#declare poly_r = 0.5;
#declare cycle_r = 0.13;
#declare an = 2*pi/poly_n;
#declare poly_thr = poly_r*cos(an/2);
#declare bound=max(cycle_r,poly_r);
#declare multi = 10;
#declare poly_obj =
polynomial{
4,
xyz(0,2,2):multi*1,
xyz(2,0,1):multi*2*height,
xyz(1,0,2):multi*2*(poly_thr-cycle_r),
xyz(2,0,0):multi*(-pow(height, 2)),
xyz(0,0,2):multi*(-pow(cycle_r - poly_thr, 2)),
xyz(1,0,1):multi*2*height*(-2*poly_thr + cycle_r),
xyz(1,0,0):multi*2*pow(height,2)*poly_thr,
xyz(0,0,1):multi*2*height*poly_thr*(poly_thr - cycle_r),
xyz(0,0,0):multi*(-pow(poly_thr*height, 2))
sturm
}
#declare mockup2 =
difference{
cylinder{
<0,0,0.0>,<0,0,height>, bound
}
#for(i, 0, poly_n-1)
object{
poly_obj
inverse
rotate <0,0,degrees(an*i)>
}
plane{
<1,0,0>,-poly_thr
rotate <0,0,degrees(an*i)>
}
#end
texture {pigment {rgb 1}}
scale 3
rotate <0,90,90>
}
mockup2
light_source {
<4.08,5.9,5.1>
color rgb<1, 1, 1>
}
camera {
location <0, 0, 0>
look_at <0, 0, -1>
right <-1.7777777777777777, 0, 0>
up <0, 1, 0>
angle 49.134343
rotate <-27.098163, 46.688390, -0.903519>
translate <7.481132, 5.343666, 6.507640>
}
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ru> wrote:
