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Quick Tip: Option Erase
In: blogging
19 Mar 2010
When creating vectors, I sometimes need to delete large areas of artwork. Sometimes I just mask the artwork, but other times I want to get rid of it all together. This is were the Eraser tool comes in handy. Holding down the Option / Alt key with the Eraser tool creates a marquee area and anything within this area will be deleted.
Option / Alt + Eraser Tool
With the Eraser tool (Shift + E) simply hold down the Option / Alt key and draw a marquee over the are you want to be deleted. This works great for large areas that need to be deleted, cleaning up borders of artwork, or creatively subtracting from artwork.
Delete Large Areas and Clean Up Border
When I created the stock vector piece below, I wanted the edges to be nice and clean for anyone downloading it. With The Eraser tool + Option / Alt, it was really easy and quick to deleted the part of the illustration outside of the artboard.
Creative Subtraction and Experiment
In this example, I created a couple of ellipses with the Ellipse tool (L) and used option-erase to subtract part of the ellipses. Then I set the Color Mode to Multiply and placed them over a background rectangle. I added some text and then used option-erase to delete the artwork I didn’t need.
- Tags: artwork, color mode, ellipse tool, ellipses, eraser tool, Rectangle, subtraction, tool option, vectors
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4 Responses to Quick Tip: Option Erase
JP
March 20th, 2010 at 11:43 am
Add a negative number.
30 + (-15) = 15
nyphdinmd
March 23rd, 2010 at 6:04 pm
Lets call the force of vector A, A, the force of vector B, B and so on. Lets call the angles they make in the clockwise direction a, b,and c repectively. Now we can compute teh x and y components of each of the vectors:
Ax = A*cos(a) Ay = -A*sin(a) The "-" sign is because the vector A is in the fourth quadrant and it's projection is onto the negative portion of the y-axis.
Bx = B*cos(90-b) By = B*sin(90-b) Note vector B is in the first quadrant so both its x and y components are positive. I used 90 – b to get eh angle with resepct to the x axis.
Cx = C*cos(c) Cy = C*sin(c)
Finally the resultant vector is:
Dx = D Dy = 0
Okay so now solve 2A + C – B = D in component form
x: 2Ax + Cx – Bx = Dx
y: 2Ay + Cy – By = 0 —> Cy = By – 2Ay
Cx = Dx + Bx – 2Ax
The angle wrt to the x-axis in a counter clockwise direction is:
c = tan^-1(Cy/Cx)
Ax = 26.387 Ay = -11.85
Bx = 30.93 By = 29.87
Dx = 36
Cx = 36 +30.93-2*(26.387) = 14.16 lbs
Cy = 53.57 lbs
c = 75.19 + 90 = 165.19
Added 90 deg becasue this vector has to lie in the second quadrant to cancel out the large x and y components
♥Dest♥
March 28th, 2010 at 1:40 pm
2w + 2l = P
(width and length)
8*2 + 3*2 = 22
6*2 + 5*2 = 22
9 and 2
10 and 1
7 and 4
Maddy
May 2nd, 2010 at 3:57 am
I don't like it. I lose things easily and wouldn't want to put that much cash into something I would leave on a bench. Sometimes it's cute though, if you're in an upper class neighborhood it makes it easier to fit in. If you're in a lower class neighborhood, it makes you more of a target.