OBD:PLEA
Jump to navigation
Jump to search
|
|
| Offset | Type | Raw Hex | Value | Description |
|---|---|---|---|---|
| 0x00 | res_id | 01 41 02 00 | 577 | 00577-.PLEA |
| 0x04 | lev_id | 01 00 00 06 | 3 | level 3 |
| 0x08 | char[20] | AD DE | dead | unused |
| 0x1C | int32 | 03 00 00 00 | 13554 | array size |
| First element (black outline) | ||||
| 0x00 | float | 00 00 00 00 | 0.000000 | 'a' coefficient of the plane equation (x component of plane's normal) |
| 0x04 | float | 00 00 00 00 | 0.000000 | 'b' coefficient of the plane equation (y component of plane's normal) |
| 0x08 | float | 00 00 80 3F | 1.000000 | 'c' coefficient of the plane equation (z component of plane's normal) |
| 0x0C | float | 00 00 19 44 | 612.000000 | 'd' coefficient of the plane equation |
- Plane equation
- The canonical equation for a plane in 3D is :
- a * x + b * y + c * z + d = 0
- where (a, b, c, d) are 4 real numbers. The plane is the set of points (x, y, z) verifying that equation.
- The four floats in one of a PLEA's packages are exactly the (a, b, c, d) of the above definition.
- In that case, the first package of the above example defines the plane (0 * x + 0 * y + 1 * z + 612 = 0), i.e., the vertical plane z = -612.
Planes are used for environment culling and collision detection.
| ONI BINARY DATA |
|---|
| OTLF << Other file types >> PNTA |
| PLEA : Plane Equation Array |
| Level file |