Started by archonforest, February 15, 2018, 05:39:28 am
Quote from: Oshyan on February 15, 2018, 05:42:07 pmThink of the level of accuracy you want. Let's say you know you want to create specific features within a 1000x1000 meter area (1km square). If you make an image that is 1000 pixels on each side, then you will have "1 meter per pixel" accuracy. Each pixel will represent 1 meter. Now let's say you want your river to be 10 meters across. That means your river can *only* be 10 pixels wide in the image you create! It also means that if in some places the river you paint in the image is just 1 pixel wider, it will be a full 1 meter (~3 feet) wider. In a close-up scene that could be quite noticeable.So there is no simple, single answer, it really depends on your goals. But thinking in terms of pixels-per-meter can be very helpful. It gives you a real-world reference for how much accuracy/specificity you're going to be able to get in creating and using your image, and should help you determine if you need more resolution. - Oshyan
Quote from: luvsmuzik on February 15, 2018, 06:50:29 amThere used to be a graduated scenerio of 128x128, 256x256, 512x512, 1024x1024.......I never knew either if that was in relation to quality (which I suspect) or a magic size to cover an object (1m cube), a square meter geographically....I think the important element would be to make your texture tilable so that if you have to scale with repeating x or y it blends rather than have obvious mismatched seams. Photoshop should have a built in function for that.
Quote from: Dune on February 16, 2018, 03:09:58 amI use maps all the time, and for an area of say 2x2k I tend to make a base TIFF of 4x4k (grey). I use scales that are set from the start, depending on what the area specifics are. What Oshyan says; it depends on the level of accuracy you need. My smallest paths are sometimes only 1-2px wide, but sometimes fall away. I always test the width I draw roads/paths waterways first and measure them in TG. Say I paint a line with a 12px soft brush, and the line in TG is 5m wide, and I need a path 2m wide, I can do 2 things, reduce brush to 6px or so, or adjust in TG by color adjust. I use a mix of both, just depends on what I need.But greyscale 8 bits is fine (and not heavy at all), and you can combine 3 grey maps in one RGB file, split again in TG.