 Start 3D Model Builder (Geometry Pack)
Click on  and Project
Open Drawing CurvesCylinder
Draw points for base
 Draw points around the base starting at  20
Copy (hold CONTROL key) and turn / rotate  the first point
around to  (20)
Repeat to create all the points around the base as illustrated...
Draw the line for the base
Press Draw as the action
Press Lines to draw a line
Draw a single line, all the way around the base of the cylinder
Select the line
Press View Rotate as the action
Rotate the view as illustrated
Press Move as the action
Click on the line to select it
Copy the line
Copy (hold CONTROL key) and move the line
up to 20
Draw triangles on the side
Press Triangles to draw triangles
Draw triangles on the side of the cylinder
Draw triangles on the side
Press View Rotate as the action
Rotate the view to turn the cylinder around
Press Draw as the action
Draw more triangles as illustrated
Draw triangles on the side
Draw more triangles as illustrated
Finish the side of the cylinder
Press View Rotate as the action
Rotate the view to turn the cone around
Press Draw as the action
Draw more triangles as illustrated
Finish drawing the triangles around the sides of the cylinder
Draw triangles on the top
Press Triangles to draw triangles
Draw triangles on the top of the cylinder
Finish the top of the cylinder
Finish drawing the triangles on the top of the cylinder
Draw triangles on the base
Press View Rotate as the action
Rotate the view to show the base of the cylinder
Press Draw as the action
Draw the triangles on the base of the cylinder in the same way
Finish the cylinder
Finish drawing the triangles on the base of the cylinder
Change the lighting
Press the lighting  button to show smooth lighting
Press the normals  button to show lighting normals
The sides of the cylinder are nice and smooth but the top and bottom are wrong, they should have a flat color, so we will fix it
Delete the top and bottom
Delete  the triangles on the top and bottom of the cylinder
Copy the lines
Copy (hold CONTROL key) and move the lines
at the top and bottom above and below the cylinder as illustrated...
Draw new triangles
Draw new triangles
on the top and bottom of the cylinder as illustrated...
Move the top and bottom back
Move the triangles
for the top and bottom of the cylinder back into position as illustrated...
Can you see that the new triangles on the top and bottom now have their own set of normals that are
independent of the sides of the cylinder?
Cylinder is finished
Press Save to save the model
(click here to go back)
| 
