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RAINIGHT

Posted on 2003-11-28
Medium Priority
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I am doing a project in C graphics , where i am developing a man walking along a river on a  rainy day, ( i.e. It is raining ) I have developed man walking also river too. I am unable to produce the rain there, So plz help me in that , give me code for that.

I am using Turbo c++ compliler
On Windows 98.

For this i will be thankful to u

ASIF

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Question by:ASIFANWER
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Accepted Solution

guynumber5764 earned 200 total points
ID: 9852862
I don't have the ins & outs of TC and you haven't really stated your problem:  light/heavy rain?  wind?  Can the rain "fade in" initially?

For light rain falling vertically you could:
Declare a structure for every column containing a single row position and a pixel value (or use two arrays)

For each time step:
- For each column (col)without a rain drop
- 1 in 200 (or so) chance of starting a new drop:
- save the top (col,0) pixel
- set the row value to 0
- set pixel (col,row) to the rain colour.
- For each column with a raindrop:
- set pixel (col,row) back to the saved colour
- increment row by the rain speed
- if the drop hits bottom
- clear it off and set the row value to NO_DROP
else
- save the colour of the new (col,row) pixel.
- set the col,row pixel to rain colour.

For more complex rain behaviour you would probably need to track each drop (row, col, and saved value).  You could make things simpler or more complex with fancier bit operations but you risk getting oobleck under some circumtances.
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Expert Comment

ID: 9881006
Is it a 2-D or a 3-D program?
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