Rotating the Camera Around Objects!! =D

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Dark GDK / Rotating the Camera Around Objects!! =D

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The Mayflower

Years of Service

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Joined: 17th Dec 2007

Location: Plymouth, Massachusetts

Posted: 18th Dec 2007 00:46

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A short thing you might want without using EZRotate:

I discovered this from the Light sample.

+ Code Snippet

//variables
float a=0, b=0, c=0;

while ( LoopGDK ( ) )
	{
		a = dbWrapValue ( a + 0.5f );
		b = dbWrapValue ( b + 0.2f );
		c = dbWrapValue ( c + 0.05f );
		float x = dbCos ( c ) * 250.0f;
		float z = dbSin ( c ) * 300.0f;

		dbPositionCamera ( x, 100, z);
		dbPointCamera    ( 0, 0, 0 );

...

You can change the 0.05f to change the speed of the rotation.

You can change the 250.0f and 300.0f to the shape of the oval/circle you are wanting to rotate in. 250 and 300 makes a slight oval, wider on the z axis.

The dbPointCamera command points the camera for you. DUH!

If you want to rotate around an object instead of around the origin, you could:

+ Code Snippet

float ox = 'object's x position'
float oz = 'object's z position'

and change the dbPositionCamera to

+ Code Snippet

dbPositionCamera ( x + ox, 100, z + oz);

All you needed to do was add the coordinates to the new x and z!

Well....... That's it.

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Dark GDK / Rotating the Camera Around Objects!! =D