Hello Tutor Friend! I have one secret to easily mastering technical drawings especially drawing with "AutoCAD". The secret is the Mastery of Understanding the Coordinate System. If we already understand the coordinate system, I guarantee everyone will quickly understand all forms of functions/commands in AutoCAD.
a. 2D Cartesian Coordinate System
- Determined by the X and Y axes (X axis on horizontal lines, Y axis is vertical)
- Writing (x, y)
- Determined by the X, Y and Z axes (X style on the horizontal line, vertical Y axis, and Z style as the point height level)
- Writing (x, y, z)
B. Polar Coordinate System
The Polar coordinate is a coordinate system used to describe a certain distance at a certain angle from the last point. The angle of rotation is counterclockwise (counterclockwise).
The Polar coordinate is a coordinate system used to describe a certain distance at a certain angle from the last point. The angle of rotation is counterclockwise (counterclockwise).
Polar coordinate function:
Search for objects (examples; lines) with a certain length with a certain angle/slope.
Search for objects (examples; lines) with a certain length with a certain angle/slope.
Write format:
@distance
@distance
Application example:
the first point is 14.4
the second point is @ 8
Polar Coordinate System
the first point is 14.4
the second point is @ 8
Polar Coordinate System
C. Relative Coordinate System
2D and or 3D Relative Coordinates are coordinate systems used to describe distances relative to the previous point.
Polar coordinate function:
The work of an object (example; line) with a certain length, width and height.
The work of an object (example; line) with a certain length, width and height.
Writing format:
2D format @ length, width or
3D format @length, width, height
2D format @ length, width or
3D format @length, width, height
Examples of application to 3D:
the first point is @1,1
the second point is @ 3,2,2
the first point is @1,1
the second point is @ 3,2,2
D. Absolute Coordinate System
The Absolute Coordinate is the coordinate system used for 2D fields, these coordinates are determined by the X and Y axes.
Polar coordinate function:
The work of an object (example; line) with a certain length, width and height.
The work of an object (example; line) with a certain length, width and height.
writing format:
(x), (y)
Application example:
point A 4.4
point A 4.4
Reference source:
Sastra M Suparno. 2014. Be Excellent Designer with AutoCAD Revisions Edition. Jakarta (ID). PT Elex Media Komputindo.
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