Creation of geometries by Coordinate system methods using AutoCad
AIM- Creation of geometries by Coordinate system methods using AutoCad.
PROCEDURE-
1.Creation of geometries by Absolute cordinate system. This follows WCS method and cordinates are relative to origin.
[For P-1 geometry]
Step 1- Invoke line command by typing 'L' in command box.
Step 2 - Specify first point, enter (2,1)
Step 3 - specify next point or [Undo]: enter (8,1)
Step 4 - specify next point or [Undo]: (8,2)
Step 5- specify next point or [Undo]: (3,2)
Step 6- specify next point or [Undo]: (3,6)
Step 7- specify next point or [Undo]:(8,6)
Step 8- specify next point or [Undo]:(8,7)
Step 9 - specify next point or [Undo]: (2,7)
Step 10- type 'C' for close.
Result- Geometry is ready of given P-1, C-section is formed of outer length 6 units, and height 6 units and thickness 1 unit.
[For P-2 geometry]
Step 1- Invoke line command by typing 'L' in command box.
Step 2 - Specify first point, enter (2,1)
Step 3 - specify next point or [Undo]: enter (20,1)
Step 4 - specify next point or [Undo]: (23,1)
Step 5- specify next point or [Undo]: (23,5)
Step 6- specify next point or [Undo]: (24,5)
Step 7- specify next point or [Undo]:(24,1)
Step 8- specify next point or [Undo]:(27,1)
Step 9 - specify next point or [Undo]: (25,8)
Step 10 - specify next point or [Undo]: (22,8)
Step 10- type 'C' for close.
Result- Geometry is ready of given P-2, Its height is 7 units and width is 7 units at bottom and 3 at top.
2.(i) Creation of geometries by Relative Rectangular cordinate system. This takes cordinate related to previous point of geometry, according to change in direction dx in X axis, and dy in Y axis.
[For P-1 geometry]
Step 1- Invoke line command by typing 'L' in command box.
Step 2 - Specify first point, enter (2,1)
Step 3 - specify next point or [Undo]: enter (@6,0)
Step 4 - specify next point or [Undo]: (@0,1)
Step 5- specify next point or [Undo]: (@-3,0)
Step 6- specify next point or [Undo]: (@0,4)
Step 7- specify next point or [Undo]:(@5,0)
Step 8- specify next point or [Undo]:(@0,1)
Step 9 - specify next point or [Undo]: (@-6,0)
Step 10- type 'C' for close.
Result- Geometry is ready of given P-1, C-section is formed of outer length 6 units, and height 6 units and thickness 1 unit.
[For P-2 geometry]
Step 1- Invoke line command by typing 'L' in command box.
Step 2 - Specify first point, enter (20,1)
Step 3 - specify next point or [Undo]: enter (@3,0)
Step 4 - specify next point or [Undo]: (@0,4)
Step 5- specify next point or [Undo]: (@1,0)
Step 6- specify next point or [Undo]: (@0,-4)
Step 7- specify next point or [Undo]:(@3,0)
Step 8- specify next point or [Undo]:(@-2,7)
Step 9 - specify next point or [Undo]: (@-3,0)
Step 10- type 'C' for close.
Result- Geometry is ready of given P-2, Its height is 7 units and width is 7 units at bottom and 3 at top.
2.(ii) Creation of geometries by Relative Polar cordinate system. This takes cordinate related to previous point of geometry, according to change in length and angle.
[For P-1 geometry]
Step 1- Invoke line command by typing 'L' in command box.
Step 2 - Specify first point, enter (2,1)
Step 3 - specify next point or [Undo]: enter (@6<0)
Step 4 - specify next point or [Undo]: (@1<90)
Step 5- specify next point or [Undo]: (@5<180)
Step 6- specify next point or [Undo]: (@4<90)
Step 7- specify next point or [Undo]:(@5<0)
Step 8- specify next point or [Undo]:(@1<90)
Step 9 - specify next point or [Undo]: (@6<180)
Step 10- type 'C' for close.
Result- Geometry is ready of given P-1, C-section is formed of outer length 6 units, and height 6 units and thickness 1 unit.
[For P-2 geometry]
Step 1- Invoke line command by typing 'L' in command box.
Step 2 - Specify first point, enter (20,1)
Step 3 - specify next point or [Undo]: (@3<0)
Step 4 - specify next point or [Undo]: (@4<90)
Step 5- specify next point or [Undo]: (@1<0)
Step 6- specify next point or [Undo]: (@4<270)
Step 7- specify next point or [Undo]:(@3<0)
Step 8- specify next point or [Undo]:(@7<100.945)
Step 9 - specify next point or [Undo]: (@3<180)
Step 10- type 'C' for close.
Result- Geometry is ready of given P-2, Its height is 7 units and width is 7 units at bottom and 3 at top.
3. Creation of geometries by Direct system. Geometry is drawn according to length and direction of cursor.
[For P-1 geometry]
Turn on the ortho mode.
Step 1- Invoke line command by typing 'L' in command box.
Step 2 - Specify first point, enter (2,1)
Step 3 - specify next point or [Undo]: position of cursor in X axis (6)
Step 4 - specify next point or [Undo]: position of cursor in y axis (1)
Step 5- specify next point or [Undo]: position of cursor in -X axis (5)
Step 6- specify next point or [Undo]: position of cursor in y axis (4)
Step 7- specify next point or [Undo]: position of cursor in X axis (5)
Step 8- specify next point or [Undo]: position of cursor in y axis (1)
Step 9 - specify next point or [Undo]: position of cursor in -X axis (6)
Step 10- type 'C' for close.
Result- Geometry is ready of given P-1, C-section is formed of outer length 6 units, and height 6 units and thickness 1 unit.
[For P-2 geometry]
Turn on the ortho mode.
Step 1- Invoke line command by typing 'L' in command box.
Step 2 - Specify first point, enter (20,1)
Step 3 - specify next point or [Undo]: position of cursor in X axis (3)
Step 4 - specify next point or [Undo]: position of cursor in y axis (4)
Step 5- specify next point or [Undo]: position of cursor in X axis (1)
Step 6- specify next point or [Undo]: position of cursor in -y axis (4)
Step 7- specify next point or [Undo]: position of cursor in X axis (3)
Turn off the ortho mode
Step 8- specify next point or [Undo]: position of cursor at <105.945 (7.28)
Step 9 - specify next point or [Undo]: position of cursor in -X axis (3)
Step 10- type 'C' for close.
Result- Geometry is ready of given P-2, Its height is 7 units and width is 7 units at bottom and 3 at top.