Qualification > Math

TRansformations

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junky demon:
yeah..n e tym.. 8)

sweetsh:

--- Quote from: Priceless on May 17, 2009, 03:00:26 pm ---
--- Quote from: eddie_adi619 on May 17, 2009, 12:54:28 pm ---hey thanks a lot shan....

@priceless and reishamix

i wud like to learn the base vectors method ..plzz.

it wud very kind of u to teach me..
thank you

--- End quote ---

Lol ya sure np. umm ok here v go.

Reflection:

1. reflection in ml y=x it's (0 1)
                                   (1 0)

2. refelction in ml y=-x itz (0 -1)
                                    (-1 0)

3. refelction in x-axis itz (1 0)
                                 (0 -1)

4. reflection in y-axis itz (-1 0)
                                  (0  1)

Rotation

1. rotation +90 degrees(anticlockwise) around centre(0,0)  itz (0 -1)
                                                                                    (1  0)

2. rotation -90 degrees(clockwise) around centre (0,0)  itz (0  1)
                                                                               (-1 0)

3. rotation 180 degrees around centre (0,0)  itz (-1 0)
                                                                 (0 -1)

Enlargement

1. centre (0,0) wer k=scale factor, itz (k 0)
                                                    (0 k)

Shear

1. x invariant with x-axis wer k=scale factor (1 k)
                                                            (0 1)

2. y invariant with y-axis wer k=scale factor (1 0)
                                                            (k 1)

Stretch

1. x invariant with y-axis wer k=scale factor (1 0)
                                                            (0 k)

2. y invariant with x-axis wer k=scale factor (k 0)
                                                            (0 1)


phew don't LOL i no itz a lot but once u no dem itz rely easy. u can du ur sums very easily den widout doin da point co ordinate thng. once u no wat da transformation is eddie_adi619 u ll no wat da matrix is also. gud luck 2 all 4 ur xams hope v all du well.

--- End quote ---
Can you please specify which transformations are multiplied and which are added?

Priceless:
lol sweetsh u dont hv 2 multiply any matrixes or add any. just know wat da transformation is n write down da base vector. dats it. gud luck!!!

sweetsh:
LOL! I dont like this word at all but i'll use it in this situation.
You didnt inderstand me my friend, sometimes they give you points and then you have to draw them under this transformation, so you have to multiply for example for rotation (0  -1)
                                                                                           (1    0)

zara:
matrix *object=image
v multiply n nt add....

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