Create Mask
in [Macromedia Director]
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From: adam on 8 Oct 2008 16:14 Kindaian, I checked out the link and can?t get that code to return any results. I think that I successfully create a new image, but I don?t know how to place that image on the stage. In a separate post* (http://www.adobe.com/cfusion/webforums/forum/messageview.cfm?catid=187&threadid =1396437) asking about scripted sprite creation with a duplicated image I outlined my broader goal. Below is a synopsis of what I?m trying to accomplish. Imagine cast member 1 is a bitmap of a wall. Each round of the game, I need to place the wall on stage. Additionally, I need to use a different cast member (hole.bmp) to punch 3 to 5 holes through the wall image on the stage. Each round will be different, so I thought that I needed to duplicate the wall every time, otherwise the cast member itself would have more and more holes cut out over time. I need a fresh wall each round. There is a .zip file here (www.blueapplestudio.com/Director/GenerateMask.zip) containing a Director file with my setup. If one of you could take a look at the code and give me some advice I'd appreciate it. *Not trying to cross/double post. Both threads were started with two different questions in mind.
From: Production Monkey on 8 Oct 2008 18:26 You can lead a horse to water, but you can't make 'em drink.
From: adam on 9 Oct 2008 15:20 Production Monkey- I do appreciate your assistance, and though I didn?t mention it I have tried working with the script you posted. The script you posted successfully delivers a union of the two images, but what I would like to do is use one image?s alpha to subtract area from another image. Attached is the code I altered to try and achieve this. Sincerely not trying to make anyone do my homework here. -Thirsty Horse --//Below are the three approaches I tried -------------------------------------------------------------------------------- ----- --This is the original method posted, and succesfully delivers a union of the two images. -- create a new alpha TempAlpha = image(TempImage.width, TempImage.height, 8, #grayscale) TempAlpha.copyPixels(pAlpha, DestRect, pAlpha.rect) -------------------------------------------------------------------------------- ----- --Here I am trying to use a mask to create the punch-out effect... -- create a new alpha TempAlpha = image(TempImage.width, TempImage.height, 8, #grayscale) newMatte = Member(3).image.createMask()--mask created TempAlpha.copyPixels(pAlpha, DestRect, pAlpha.rect, [#maskImage: newMatte]) -------------------------------------------------------------------------------- ----- --...and here we are trying a matte. -- create a new alpha TempAlpha = image(TempImage.width, TempImage.height, 8, #grayscale) newMatte = Member(3).image.createMatte()--matte created TempAlpha.copyPixels(pAlpha, DestRect, pAlpha.rect, [#maskImage: newMatte]) -------------------------------------------------------------------------------- -----
From: Production Monkey on 9 Oct 2008 20:16 Thirsty Horse, Good to hear from you. I believe you are over thinking this and perhaps missed an important line of code from my behavior - "setAlpha()". "setAlpha()" is all you need to punch some holes in a picture. Using your Director, file the code would be: member("capsule").image.setAlpha(member("mask123").image) The caveat being that member("mask123") needs to be an 8-bit grayscale image with exactly the same dimensions as member "capsule". Let me know if that helps.
From: adam on 10 Oct 2008 10:07
Production Monkey, That is what I was looking for. Thanks for your, and everyone else's, assistance and patience. |