Comments on: Physics in 3D http://gafferongames.com Glenn Fiedler's Game Development Articles and Tutorials Tue, 31 Jan 2012 03:56:23 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Glenn Fiedler http://gafferongames.com/game-physics/physics-in-3d/#comment-23444 Glenn Fiedler Wed, 02 Nov 2011 00:10:30 +0000 http://www.gaffer.org/wordpress/physics-in-3d/#comment-23444 ideally, yes ideally, yes

]]> By: Sakari http://gafferongames.com/game-physics/physics-in-3d/#comment-23427 Sakari Tue, 01 Nov 2011 18:47:38 +0000 http://www.gaffer.org/wordpress/physics-in-3d/#comment-23427 Hi and thank you for an awesome set of tutorials! I have been trying to get my head around the RK4 integrator and was wondering how you would modify the example if you had some force that is dependent on velocity? Should each evaluate() call update the velocity with Euler integration so to get the curvature for this force too? Hi and thank you for an awesome set of tutorials! I have been trying to get my head around the RK4 integrator and was wondering how you would modify the example if you had some force that is dependent on velocity? Should each evaluate() call update the velocity with Euler integration so to get the curvature for this force too?

]]> By: Sourabh http://gafferongames.com/game-physics/physics-in-3d/#comment-20234 Sourabh Fri, 23 Sep 2011 18:09:24 +0000 http://www.gaffer.org/wordpress/physics-in-3d/#comment-20234 Hi Glenn Fiedler, I am really inspired with your work. I am an undergrad student and i am doing a project in 3d, i want to make a simulator which shows random bodies movement in 3D. I want to know which base model should i select to go further. Thanks Hi Glenn Fiedler,
I am really inspired with your work. I am an undergrad student and i am doing a project in 3d, i want to make a simulator which shows random bodies movement in 3D. I want to know which base model should i select to go further.

Thanks

]]> By: Tom http://gafferongames.com/game-physics/physics-in-3d/#comment-13059 Tom Sun, 05 Jun 2011 22:14:08 +0000 http://www.gaffer.org/wordpress/physics-in-3d/#comment-13059 Awesome Tutorial! Thank you very much :) Awesome Tutorial! Thank you very much :)

]]> By: Son Nguyen http://gafferongames.com/game-physics/physics-in-3d/#comment-9574 Son Nguyen Mon, 07 Mar 2011 03:03:51 +0000 http://www.gaffer.org/wordpress/physics-in-3d/#comment-9574 Great tutorial & easy to understand ! Thanks Great tutorial & easy to understand !

Thanks

]]> By: Vijay Kumar R http://gafferongames.com/game-physics/physics-in-3d/#comment-5642 Vijay Kumar R Sun, 12 Dec 2010 22:53:13 +0000 http://www.gaffer.org/wordpress/physics-in-3d/#comment-5642 Very neatly explained! Very neatly explained!

]]> By: Glenn Fiedler http://gafferongames.com/game-physics/physics-in-3d/#comment-438 Glenn Fiedler Sat, 08 May 2010 05:48:01 +0000 http://www.gaffer.org/wordpress/physics-in-3d/#comment-438 Looks like you are right, sorry about that Looks like you are right, sorry about that

]]> By: Olai http://gafferongames.com/game-physics/physics-in-3d/#comment-437 Olai Sat, 01 May 2010 14:12:54 +0000 http://www.gaffer.org/wordpress/physics-in-3d/#comment-437 I noticed that you defined torque with switched point offset and force. It should be T = p x F, not T = F x p, which leads to a torque in the reverse and wrong direction. I noticed that you defined torque with switched point offset and force. It should be T = p x F, not T = F x p, which leads to a torque in the reverse and wrong direction.

]]> By: Thijs Adriaansen http://gafferongames.com/game-physics/physics-in-3d/#comment-436 Thijs Adriaansen Sun, 29 Nov 2009 17:14:20 +0000 http://www.gaffer.org/wordpress/physics-in-3d/#comment-436 Thank you for the reply, now I understand why the object moves along the axis while rotating. I also read the first 'x' in Ftorque = F x (p - x) as the x-position not the cross product symbol x. Thank you for the reply,

now I understand why the object moves along the axis while rotating. I also read the first ‘x’ in Ftorque = F x (p – x) as the x-position not the cross product symbol x.

]]> By: Glenn Fiedler http://gafferongames.com/game-physics/physics-in-3d/#comment-435 Glenn Fiedler Fri, 27 Nov 2009 17:35:22 +0000 http://www.gaffer.org/wordpress/physics-in-3d/#comment-435 actually, the forces are not constant over the frame because they depend on the position and velocity of the body - this is why i use RK4... actually, the forces are not constant over the frame because they depend on the position and velocity of the body – this is why i use RK4…

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