2D coordinates of a 3D object (Help)

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Dark GDK / 2D coordinates of a 3D object (Help)

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Moops

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Joined: 19th Apr 2010

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Posted: 10th May 2010 20:04

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Hiya Guys,

hope you can help me, I'm trying to place a small health bar above a 3d object, I'm wanting to place a stretched sprite above the 3D object but have no way to calculate the screen position from the 3D object position, or should I say this is what I need help with, how to get a 2D coordinates from a 3D object coordinates.

Here is my current code of which I know doesn't work as the X and Y of dbObjectPosition are 3D coordinates, but this ight give you a better understanding of what im trying to achieve.

+ Code Snippet

void enemiesHudCheck ( void )
{
	for ( int i = 0; i < ZOMBIESPAWN; i++ )
	{
		int hudx = dbObjectPositionX(zombies[i].obj);
		int hudy = dbObjectPositionY(zombies[i].obj);
		dbSprite (zombies[i].obj,hudx,hudy,500);
		dbStretchSprite (zombies[i].obj,zombies[i].life*100,100);
	}	
}

cheers

Moops

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Hassan

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Joined: 4th May 2009

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Posted: 10th May 2010 20:32

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dbObjectScreenX/Y

+ Code Snippet

void enemiesHudCheck ( void )
{
	for ( int i = 0; i < ZOMBIESPAWN; i++ )
	{
		int hudx = dbObjectScreenX(zombies[i].obj);
		int hudy = dbObjectScreenY(zombies[i].obj);
		dbSprite (zombies[i].obj,hudx,hudy,500);
		dbStretchSprite (zombies[i].obj,zombies[i].life*100,100);
	}	
}

also, you probably want to increase the y amount to be "over" the object, not on it

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Moops

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Joined: 19th Apr 2010

Location:

Posted: 12th May 2010 13:23

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spot on thank you.

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Dark GDK / 2D coordinates of a 3D object (Help)