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BTG file format: Difference between revisions
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→Texture Coordinates List
RalfGerlich (talk | contribs) (Added description of vertex and normal list) |
RalfGerlich (talk | contribs) |
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=== Texture Coordinates List === | === Texture Coordinates List === | ||
The Texture Coordinates List object contains a list of texture coordinates to be referenced by other geometry primitives. | |||
The properties of a Teture Coordinates List object are ignored. | |||
Each element of a Texture Coordinates List object is a list of texture coordinates. | |||
Each of the coordinates gets a unique index, starting with 0 for the first coordinate found in the file and incrementing by 1 for each further coordinate. | |||
{| border="1" | |||
|- | |||
! Byte offset | |||
! Type | |||
! Description | |||
|- | |||
| align="right"| 0 | |||
| unsigned int | |||
| number of bytes in this element | |||
|- | |||
| align="right"| 4 | |||
| texture coordinates | |||
| texture coordinate list | |||
|} | |||
Each texture coordinate is a pair of single precision floating point values: | |||
{| border="1" | |||
|- | |||
! Byte offset | |||
! Type | |||
! Description | |||
|- | |||
| align="right"| 0 | |||
| float | |||
| x-part of the texture coordinate | |||
|- | |||
| align="right"| 4 | |||
| float | |||
| y-part of the texture coordinate | |||
|} | |||
The number of coordinates in an element is therefore the number of bytes in the element divided by 8. | |||
=== Color List === | === Color List === | ||