Simply speaking, "near" and "far" clipping planes is something like two vertical planes in front of your eyes, and the view is rendered between them. Like hologram generator. Both of the planes must be in front of you, so "near" must be greater than 0, the"far" depends on how far you want to see your world. Let's say you set "far" as 20 and see the rectangle which is 100 units deep, you will see only 20 units of it (but in the view direction - if not rotated, in Z direction). In your case "near" is always in front of your eyes, so set it as 0.1, "far" should be big enough to see quite a lot of the world if it rotates plus elevation over it, I'd say 5000 should be enough, but you have to check it to be sure. As for missing parts of the world, the best trick to hide it is to use fog on very low settings, so it makes nice blurr, but doesn't affect close range picture.
Tomek ----- Original Message ----- From: "Kevin Fishburne" <kevinfishbu...@eightvirtues.com> To: gambas-user@lists.sourceforge.net Sent: Sunday, 27 May, 2012 8:12:46 AM Subject: Re: [Gambas-user] gb3: OpenGL Rotate and Translate logic On 05/27/2012 02:40 AM, tommyl...@eircom.net wrote: > Ok, > > first - you've got perspective range as > > Glu.Perspective(45, sWidth / sHeight, -1, 1)<- should be positve and bigger > ie. Glu.Perspective(45, sWidth / sHeight, 0.1, 500) or even more if the world > is big. > > second - you're too low over the ground, thus the world is kind of > "flipped", increase eyez in glu.LookAt(). > > See it it works, then we can sort out the rest. > > Tomek Yeah, I am a bit confused about the "near" and "far" clipping range values. My maximum world dimensions are 65536x65536 feet with the elevation in inches represented by a short, or -2730 to 2730 feet (32768/12). I'm guessing the near value should be around 2730 and the far value should be around -2730 then? Things are starting to get pretty exciting, as all my data was already "3D", just my rendering looked like an old JRPG. -- Kevin Fishburne Eight Virtues www: http://sales.eightvirtues.com e-mail: sa...@eightvirtues.com phone: (770) 853-6271 ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Gambas-user mailing list Gambas-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gambas-user
