Hi,

I have a (red) cylinder, and want to add - with smooth transitions - a
number of (purple) cylinders at its end. But my understanding of the
blob object is not very good, and so i simply don't succeed.

Please see below the code as it exists now, after endless attempts.

--------------------------------------

#declare MyStrength =  2.00;
#declare MyDiameter = 150.0;

blob
{
 threshold 1.65
 cylinder { < -62.5, 0.0, 0.0 > < 62.5, 0.0, 0.0 > 500.0, 2.75 pigment {
rgb < 1, 0, 0 > } scale < 0.025, 2.105, 2.105 > translate < -60.0, 0.0,
0.0 > }
 cylinder { < -62.5, 0.0, 0.0 > < 62.5, 0.0, 0.0 > 500.0, 2.75 pigment {
rgb < 1, 0, 0 > } scale < 0.025, 2.105, 2.105 > translate <  60.0, 0.0,
0.0 > }

 cylinder { < -700.0,  100.0, 250.0 > < 700.0,  100.0, 250.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } scale < 10.0, 1.0,
1.0 >  }
 cylinder { < -700.0,  050.0, 250.0 > < 700.0,  050.0, 250.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0,  000.0, 250.0 > < 700.0,  000.0, 250.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0, -050.0, 250.0 > < 700.0, -050.0, 250.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0, -100.0, 250.0 > < 700.0, -100.0, 250.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }

 cylinder { < -700.0,  100.0, 300.0 > < 700.0,  100.0, 300.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0,  050.0, 300.0 > < 700.0,  050.0, 300.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0,  000.0, 300.0 > < 700.0,  000.0, 300.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0, -050.0, 300.0 > < 700.0, -050.0, 300.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0, -100.0, 300.0 > < 700.0, -100.0, 300.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }

 cylinder { < -700.0,  100.0, 350.0 > < 700.0,  100.0, 350.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0,  050.0, 350.0 > < 700.0,  050.0, 350.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0,  000.0, 350.0 > < 700.0,  000.0, 350.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0, -050.0, 350.0 > < 700.0, -050.0, 350.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0, -100.0, 350.0 > < 700.0, -100.0, 350.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }

 cylinder { < -700.0,  100.0, 400.0 > < 700.0,  100.0, 400.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0,  050.0, 400.0 > < 700.0,  050.0, 400.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0,  000.0, 400.0 > < 700.0,  000.0, 400.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0, -050.0, 400.0 > < 700.0, -050.0, 400.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0, -100.0, 400.0 > < 700.0, -100.0, 400.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }

 cylinder { < -700.0,  100.0, 450.0 > < 700.0,  100.0, 450.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0,  050.0, 450.0 > < 700.0,  050.0, 450.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0,  000.0, 450.0 > < 700.0,  000.0, 450.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0, -050.0, 450.0 > < 700.0, -050.0, 450.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
 cylinder { < -700.0, -100.0, 450.0 > < 700.0, -100.0, 450.0 >
MyDiameter, MyStrength pigment { rgb < 1, 0, 1 > } }
}

cylinder { < -62.5, 0.0, 0.0 > < 62.5, 0.0, 0.0 > 500.0 pigment { rgbf <
1, 0, 0,0.5 > } }

--------------------------------------

Can you give me advises, how to create a smoother transition between the
purple and red cylinders? Thanks a lot.

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