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Members
(static) range_max
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Lookup tables for image colour display.
Methods
(static) buildLut(func) → {Array}
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Build a LUT of size range_max.
Parameters:
| Name | Type | Description |
|---|---|---|
func |
function | The i to lut function. |
Returns:
THe LUT.
- Type
- Array
(static) id(i) → {number}
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Identity, returns i.
Parameters:
| Name | Type | Description |
|---|---|---|
i |
number | The input index. |
Returns:
The lut value.
- Type
- number
(static) invId(i) → {number}
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Returns range_max minus one minus i.
Parameters:
| Name | Type | Description |
|---|---|---|
i |
number | The input index. |
Returns:
The lut value.
- Type
- number
(static) max(_i) → {number}
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Max function: returns range_max minus one.
Parameters:
| Name | Type | Description |
|---|---|---|
_i |
number | The input index. |
Returns:
The lut value.
- Type
- number
(static) maxFirstThird(i) → {number}
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Returns range_max minus one for the first third of i, otherwise 0.
Parameters:
| Name | Type | Description |
|---|---|---|
i |
number | The input index. |
Returns:
The lut value.
- Type
- number
(static) maxSecondThird(i) → {number}
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Returns range_max minus one from one third to two thirds of i, otherwise 0.
Parameters:
| Name | Type | Description |
|---|---|---|
i |
number | The input index. |
Returns:
The lut value.
- Type
- number
(static) maxThirdThird(i) → {number}
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Returns range_max minus one from one third to two thirds of i, otherwise 0.
Parameters:
| Name | Type | Description |
|---|---|---|
i |
number | The input index. |
Returns:
The lut value.
- Type
- number
(static) toMaxFirstThird(i) → {number}
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Ramp to range_max minus one on the first third values.
Parameters:
| Name | Type | Description |
|---|---|---|
i |
number | The input index. |
Returns:
The lut value.
- Type
- number
(static) toMaxSecondThird(i) → {number}
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Ramp to range_max minus one on the second third values. otherwise return 0 for the first third and range_max minus one for the last third.
Parameters:
| Name | Type | Description |
|---|---|---|
i |
number | The input index. |
Returns:
The lut value.
- Type
- number
(static) toMaxThirdThird(i) → {number}
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Ramp to range_max minus one on the last third values. otherwise return 0.
Parameters:
| Name | Type | Description |
|---|---|---|
i |
number | The input index. |
Returns:
The lut value.
- Type
- number
(static) zero(_i) → {number}
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Returns zero.
Parameters:
| Name | Type | Description |
|---|---|---|
_i |
number | The input index. |
Returns:
The lut value.
- Type
- number