dng_1d_table Class Reference
A 1D floating-point lookup table using linear interpolation.
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#include <dng_1d_table.h>
List of all members.
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Public Types |
enum | { kTableBits = 12,
kTableSize = (1 << kTableBits)
} |
| Constants denoting size of table.
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Public Member Functions |
void | Initialize (dng_memory_allocator &allocator, const dng_1d_function &function, bool subSample=false) |
real32 | Interpolate (real32 x) const |
const real32 * | Table () const |
| Direct access function for table data.
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void | Expand16 (uint16 *table16) const |
| Expand the table to a 16-bit to 16-bit table.
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Protected Attributes |
AutoPtr< dng_memory_block > | fBuffer |
real32 * | fTable |
Detailed Description
A 1D floating-point lookup table using linear interpolation.
Member Function Documentation
Set up table, initialize entries using functiion. This method can throw an exception, e.g. if there is not enough memory.
- Parameters:
-
| allocator | Memory allocator from which table memory is allocated. |
| function | Table is initialized with values of finction.Evalluate(0.0) to function.Evaluate(1.0). |
| subSample | If true, only sample the function a limited number of times and interpolate. |
References dng_memory_allocator::Allocate(), dng_1d_function::Evaluate(), and AutoPtr< T >::Reset().
real32 dng_1d_table::Interpolate |
( |
real32 |
x |
) |
const [inline] |
Lookup and interpolate mapping for an input.
- Parameters:
-
| x | value from 0.0 to 1.0 used as input for mapping |
- Return values:
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| Approximation | of function.Evaluate(x) |
References DNG_ASSERT.
The documentation for this class was generated from the following files: