Обсуждение: One more globe
> > Jan Wieck wrote: > > Why not - where do you have height information of the entire > > earth? > > I have no idea where you'd get that info. I was just > joking, you are going way beyond the call of duty. > It's cool. > > :) clark That's no joke! Well - you wanted mountains - there they are (Example 2). But please don't tell me next you want planes in the air, smog over NY and dolphins in the sea :-) Jan -- #======================================================================# # It's easier to get forgiveness for being wrong than for being right. # # Let's break this rule - forgive me. # #======================================== jwieck@debis.com (Jan Wieck) #
On Thu, 18 Mar 1999, Jan Wieck wrote: > > > > Jan Wieck wrote: > > > Why not - where do you have height information of the entire > > > earth? > > > > I have no idea where you'd get that info. I was just > > joking, you are going way beyond the call of duty. > > It's cool. > > > > :) clark > > That's no joke! > > Well - you wanted mountains - there they are (Example 2). > But please don't tell me next you want planes in the air, > smog over NY and dolphins in the sea :-) I love it... Can ya really do the dolphins though? :) Marc G. Fournier ICQ#7615664 IRC Nick: Scrappy Systems Administrator @ hub.org primary: scrappy@hub.org secondary: scrappy@{freebsd|postgresql}.org
> > > > Jan Wieck wrote: > > > Why not - where do you have height information of the entire > > > earth? > > > > I have no idea where you'd get that info. I was just > > joking, you are going way beyond the call of duty. > > It's cool. > > > > :) clark > > That's no joke! > > Well - you wanted mountains - there they are (Example 2). > But please don't tell me next you want planes in the air, > smog over NY and dolphins in the sea :-) Jan, is there no limit to what you can do? -- Bruce Momjian | http://www.op.net/~candle maillist@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
Bruce Momjian wrote: > > Well - you wanted mountains - there they are (Example 2). > > But please don't tell me next you want planes in the air, > > smog over NY and dolphins in the sea :-) > > Jan, is there no limit to what you can do? Rayshade has no wireframe objects like POVray. A wireframe is an elegant way to describe complex things like e.g. screws. In rayshade you have only some primitves like sphere, box, cone, cylinder and some flat things like triangle, disc and polygon. The problem with missing wireframes is that things like characters are really hard to define. Anything to build must be described as combinations of such primitive objects. This process is called Constructive Solid Geometry (CSG). For example to make a hole in a wall you take a box and scale it to 5.0, 0.2, 3.0 (x,y,z). Now you take another box, scale it to 1.0, 0.21, 0.5 move it into the center and subtract it from the wall. There is now the hole where you can put in the window. If you build four walls don't forget the hole for the door :-) Another powerful primitive is the heightfield (what I've used to build the mountains on the map). It uses a special file of raw floating point values that describe the altitude of a point on a square plane. I've used the etopo5 topography data (altitudes in meters for every 5 minutes of the earth, 4320x2160 points though) and converted that into such a heightfield plus a color image ranging from deep blue at ocean bottom to white on the altitude of the himalaya. Look here for some other examples what's possible with these few features: http://www-graphics.stanford.edu/~cek/rayshade/gallery/gallery.html My favorites are Chem, Trees, Magic Chain and of course the scenes from Nathan Obrien! The final PostgreSQL developers globe might be another candidate for the gallery :-) Jan -- #======================================================================# # It's easier to get forgiveness for being wrong than for being right. # # Let's break this rule - forgive me. # #======================================== jwieck@debis.com (Jan Wieck) #
> Bruce Momjian wrote: > > > > Well - you wanted mountains - there they are (Example 2). > > > But please don't tell me next you want planes in the air, > > > smog over NY and dolphins in the sea :-) > > > > Jan, is there no limit to what you can do? I think the major problem I have with globe #3 is the white shaft of the pins. It is the first thing I see when I look at the image. Can the shafts be silver, black, grey, or red. They maybe they would not stick out. The eye should be drawn to the map, and the pin heads. -- Bruce Momjian | http://www.op.net/~candle maillist@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026
On 20-Mar-99 Bruce Momjian wrote: > The eye should be drawn to the map, and the pin heads. *giggle* Vince. -- ========================================================================== Vince Vielhaber -- KA8CSH email: vev@michvhf.com flame-mail: /dev/null # include <std/disclaimers.h> TEAM-OS2 Online Campground Directory http://www.camping-usa.com Online Giftshop Superstore http://www.cloudninegifts.com ==========================================================================
> > On 20-Mar-99 Bruce Momjian wrote: > > The eye should be drawn to the map, and the pin heads. > > *giggle* > I knew I was going to get a giggle on this. -- Bruce Momjian | http://www.op.net/~candle maillist@candle.pha.pa.us | (610) 853-3000+ If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania19026