Lecture Autodesk inventor: 3D geometric transformations. In this chapter, students will be able to understand kinds of transformations: translation, rotation, reflection, scaling, shearing; AutoCAD transformation commands.
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3D Geometric
Transformations
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Kinds of Transformations
Translation
Rotation
Reflection
Scaling
Shearing
• These transformations are an important
component of computer graphics programming
• Each transformation type can be expressed in a (4
x 4) matrix, called the Transformation Matrix
NOTES:
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Translation
Moving the object from one position to another
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Rotation
Rotating the object about an axis
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Reflection
Mirroring an object about a plane
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Scaling
Reducing or enlarging the object
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Shearing
Moving selected vertices of an object linearly along an axis
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Geometric
Translation Move and COpy
Rotation ROtate and
ROTATE3D Reflection MIrror and MIRROR3D Scaling SCale
Shearing STRETCH
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Rotations – Positive and Negative
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Rotations – Positive about x,y,z
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Multiple Rotations
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3D Transformations
The End