home *** CD-ROM | disk | FTP | other *** search
-
- METALS.INC
-
- This file contains the texture definitions for most of the predefined
- metallic textures. Please read GOLD.DOC for special information on
- using or modifying the gold textures! Textures available through
- metals.inc are:
-
- BRASSES : Actually contains both brasses (yellowish) and bronzes
- (brownish) metals.
- COPPERS : Several different varieties of copper.
- CHROMES : Dull iron to shiny chrome.
- SILVERS : Not much different from chromes, but there are some
- slight color differences.
- GOLDS : The best for general use are found near the "middle"
- (T_Gold_3C would be the exact "middle") of the
- pigment/finish range.
-
- BRASSES.INC, CHROMES.INC, SILVERS.INC, and COPPERS.INC
- =========================================================
- All brasses, coppers, silvers, and chromes, but not golds, share a
- common set of finishes. These finishes are also accessable by
- themselves for use in your own textures. The finishes are:
-
- F_MetalA : Very soft and dull.
- F_MetalB : Fairly soft and dull.
- F_MetalC : Medium reflectivity. Holds color well.
- F_MetalD : Highly hard and polished. High reflectivity.
- F_MetalE : Very highly polished & reflective.
-
- A set of five pigments for each type of metal are defined, numbered from
- 1 to 5, as in "P_Copper1".
-
- These five pigments are combined with all five finishes, giving five
- different version of each pigment, yeilding twenty-five different
- varieties of each metal type. These textures use a "T_" prefix, and the
- name combines the pigment number and the finish letter:
-
- T_Copper_1A
- T_Copper_1B
- T_Copper_2A
- T_Silver_3C
- T_Brass_5F
- (etc.)
-
- GOLDS.INC
- =========
- The gold metallics had to use a slightly different method. To achieve the
- desired level of realism, special ambient and reflective colors were
- used, based on the pigment. If you wish to create your own gold textures,
- copy gold.inc to gold2.inc, and modify the GoldBase pigment.
-
-
- The Test Scenes
- ===============
- There are five test scenes here: brasses.pov, coppers.pov, chromes.pov,
- golds.pov, and silvers.pov, that demonstrate the five predefined
- metallics groupings.
-
- At the bottom of each is a pair of #include statements, one
- of which will be commented out. The first, STAGE_XY.INC, displays the
- test objects in row/column order in the Z plane, whereas STAGE_XZ.INC
- displays the same objects in row/column order on the Y plane. Since
- metallic textures vary considerably depending on the environment, it is
- suggested that you try both.
-
- The STAGE_XY.INC finishes vary from left to right (columns), while
- the pigments go from top to bottom (rows). In other words, the T_Brass_1A
- example would be at the upper left corner, while the T_Brass_5D example
- would be in the lower right corner.)
-
- The STAGE_XZ.INC finishes also vary from left to right, and the pigments go
- from back to front (ie: T_Brass_1A would be at the left rear corner,
- T_Brass_5D would be in the right front corner.)
-
- A Hint:
- =======
- Both STAGE_.INC files use POV-Ray's new sky sphere using a gradient that
- fades from light to dark gray, which gives an added (but perhaps unfair)
- degree of realism because of the nice sky gradient that gets reflected
- in the metal surfaces. You may also wish to try with a simple flat
- background if you want to accurately compare with POV-Ray 2.x metal textures.
-
- Synopsis:
- =========
- METALS.INC is the result of studying the current metal textures and a
- few other good ones that we've collected in the past year and doing our
- best at determining what they have in common. We originally came up with
- nine finishes, but eventually distilled that into the five that you see
- here. The differences between any two adjacent finishes should be
- negligable, yet the differences between any three should be quite
- noticeable. At least, that was our goal.
-
- We also did our best at arriving at a set of five color variations for
- each of the metal groups. This isn't perfect, but we think we came pretty
- close.
-
- The finishes range from soft, rough, & dull (the "A" finishes) to hard &
- highly polished (the "E" finishes)
-