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Newcomers DBPro Corner / A Sine wave

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Silicon Zombie
17
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Joined: 7th Oct 2007
Location: UK
Posted: 6th Dec 2007 22:37
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I appologise if this post is either really cheeky or really silly, but please keep in mind its been over 20 years since i went to school.

Right, i know what a sine wave looks like, but i want to know how its plotted. ive searched on google for a maths site, and i cannot find out how its done.

if someone could explain, or a little example of say a letter move across the screen plotted with a sine wave, i would be really grateful.

Thanks in advance.
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Dr Schnitzengruber
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Location: C:/Projects/failed/ schnitzengruber
Posted: 7th Dec 2007 00:06 Edited at: 7th Dec 2007 00:08
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If you want a quick DBPro plot:



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Silicon Zombie
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Posted: 7th Dec 2007 01:18
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Thanks very much for replying but that code appears to only draw a straight line.... also can I ask why is t being divided by 4.0?

Regards.
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Dr Schnitzengruber
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Location: C:/Projects/failed/ schnitzengruber
Posted: 7th Dec 2007 02:33 Edited at: 7th Dec 2007 02:34
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opps, sorry:



t can be divided by any number, you don't even have to divide it. I only did it to increase frequency. Here is the basic syntax for a sine wave:



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Silicon Zombie
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Location: UK
Posted: 7th Dec 2007 02:50
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You are a star!!! Thank you so much!

I wish id paid more attention at school....

Incase you were wondering (although probably not)

The reason I wanted the sine wave was for a bouncy scrolling text. At the moment my bounce is a very lame collection of If's that moves the text on the x,y between two values to make the bounce.....

Also I wanted it to possibly use it in sprite movement aswell.

Thanks again. (I will credit you for the help!)

Regards
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Rudolpho
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Joined: 28th Dec 2005
Location: Sweden
Posted: 7th Dec 2007 16:38
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Just for the sake of it....



"I kören hörs de brummande busarna Björnligan och Gondolen"
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Silicon Zombie
17
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Joined: 7th Oct 2007
Location: UK
Posted: 9th Dec 2007 11:31
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Sorry Rudolpho, I forgot to thank you aswell.

Could a moderator please lock this topic, as the question has been completely answered.

Thanks again guys.

Regards.
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