CMSC 437 Lecture 3c, Triangle Shapes

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Lecture 3c, many shapes

Some applications use fracture to produce shapes.
Sample code for dealing with triangles follow:

The three Python program sequence to develop triangle shape:

shape_tritri.py3 source code
shape_tritri_py3.out output
shape_tritri_py3.dat  2D



dat_2d_3d.java source code
dat_2d_3d_java.out output
shape_tritri.stl  stl



shape_tritri2.py3 source code
shape_tritri2_py3.out output
shape_tritri2_py3.dat  2D



shape_tritri3.py3 source code
shape_tritri3_py3.out output
shape_tritri3_py3.dat  2D




shape35.py3 source code
shape35_py3.out output




now 3D version

shape35_3d.py3 source code
shape35_3d_py3.out output
shape35_3d_py3.dat  2D



 more 3D shapes  just z=0 and z=5   using  tri4
shape48.py3 source code
shape48_py3.dat  2D




shape48a.py3 source code
shape48a_py3.dat  2D




shape49.py3 source code
shape49_py3.dat  2D




shape50.py3 source code
shape50_py3.dat  2D




cone development

cone_3d.py3 source code
cone_3d_py3.out output
cone_3d_py3.dat  3D
cone_3d_py3.stl  3D

Initial development, just outside









Then add inside




final



.stl ready for 3D printing

More shapes for 3D printing (.stl files)


shape67.py3 source code
shape67.dat 
shape67.stl  3D printing



shape69.py3 source code
shape69_py3.dat  3D
shape69.stl  3D printing



rotating the 3D object in a .dat file

dat_rotate.py3  source code
cube2.dat  data



command
python3 dat_rotate.py3 cube2.dat cube2_rot.dat 45.0 45.0 45.0 > dat_rotate_py3.out

dat_rotate_py3.out  output
cube2_rot.dat  output



Simple shape, 2D fan blade
shape_38.py3 source code
shape_38_py3.out
shape_38_py3.dat



Simulating a binary clock (they can be bought)
binary_clock.py3 source code
binary_clock_py3.out clock running
First clock view:
binary_clock.py3 running
 
       0         0         0   add 8 if 1
       0    0    0    0    0   add 4 if 1
  0    0    0    0    0    0   add 2 if 1
  0    0    0    0    0    0   add 1 if 1
    hr       min       sec                     hr : min : sec
 
  binary  0  0  0  0  0  0  0  0  1  1
  binary  0  0  0  0  1  1  1  1  0  0
  binary  0  0  1  1  0  0  1  1  0  0
  binary  0  1  0  1  0  1  0  1  0  1
 decimal  0  1  2  3  4  5  6  7  8  9
 
starting at 12 midnight, a new day
then going to 12 noon, and on           sec
                                          0    12 : 0 : 0
       0         0         0
       0    0    0    0    0
  0    1    0    0    0    0
  1    0    0    0    0    0
                                          1    12 : 0 : 1
       0         0         0
       0    0    0    0    0
  0    1    0    0    0    0
  1    0    0    0    0    1