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INTODUCTION TO TRANSFORMATION > ABOUT TRANSFORMATION > Flashcards

ABOUT TRANSFORMATION Flashcards

1
Q

What is transformation

A

Transformation is a process of modifying and re-positioning the existing graphics.

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2
Q

Give a more elaborate definition on Transformation

A

The process of using computers for drawing by
providing facility to user to view the object from
different angles, enlarging
or reducing the scale or shape of object is called Transformation

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3
Q

What are the transformation techniques

A
  1. Translation
  2. Rotating
  3. Scaling
  4. Reflection
  5. Shear
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4
Q

What is 2D translation

A

2D Translation is a process of moving an object from one position to another in a two dimensional plane.

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5
Q

What is the formular of 2D translation

A

Xnew = Xold + tx
Ynew = Yold + tx

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6
Q

What is 2D Rotation

A

2D Rotation is a process of rotating an object with respect to an angle in a two dimensional plane

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7
Q

what is the formular of 2D rotation

A

Xnew = Xold x cosθ – Yold x sinθ
Ynew = Xold x sinθ + Yold x cosθ

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8
Q

What is 2D scaling

A

In computer graphics, scaling is a process of modifying or altering the
size of objects

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9
Q

What is the formular of 2D scaling

A

Xnew = Xold x Sx
Ynew = Yold x Sy

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10
Q

What is 2D reflection

A

Reflection is a kind of rotation where the angle of rotation is 180
degree.
*The reflected object is always formed on the other side of mirror.
*The size of reflected object is same as the size of original object

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11
Q

What is the formular for 2D reflection on x-axis

A

xnew = xold
ynew = -yold

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12
Q

What is the formular for 2D reflection on y-axis

A

x-new = -xold
ynew = ynew

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13
Q

What is 2D shearing

A

In Computer graphics, 2D Shearing is an ideal technique to change
the shape of an existing object in a two dimensional plane

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14
Q

What is the 2d shearing formula on the x-axis

A

*Xnew = Xold + Shx x Yold
*Ynew = Yold

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15
Q

What is the 2d shearing formula on the y-axis

A

*Xnew = Xold
*Ynew = Yold + Shy x Xold

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16
Q

What is 3D Translation

A

3D Translation is a process of moving an object
from one position to another in a three
dimensional plane

17
Q

What is the formular for 3D Translation

A

*Xnew = Xold + Tx
*Ynew = Yold + Ty
*Znew = Zold + Tz

18
Q

What is 3D Rotation

A

3D Rotation is a process of rotating an object with respect to
an angle in a three dimensional plane

19
Q

Formular for 3D rotation on the x-axis

A

*Xnew = Xold
*Ynew = Yold x cosθ– Zold x sinθ
*Znew = Yold x sinθ + Zold x cosθ

20
Q

Formular for 3D rotation on the y-axis

A

Xnew = Zoldsinθ + Xoldcosθ
Ynew = Yold
Znew = Zoldcosθ-Xoldsinθ

21
Q

Formular for 3D rotation on the Z-Axis

A

*Xnew = Zold x sinθ + Xold x cosθ
*Ynew = Yold
*Znew = Yold x cosθ– Xold x sinθ

INTODUCTION TO TRANSFORMATION (1 decks)

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