Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 | 1x 1x 3452163x 3054210x 3054210x 3054210x 3054210x | import { ImageBorderMode, InterpolationMode } from './Constants';
export const vtkInterpolationInfo = {
pointer: null,
extent: [0, -1, 0, -1, 0, -1],
increments: [0, 0, 0],
scalarType: null, // dataType
dataTypeSize: 1, // BYTES_PER_ELEMENT
numberOfComponents: 1,
borderMode: ImageBorderMode.CLAMP,
interpolationMode: InterpolationMode.LINEAR,
extraInfo: null,
};
export const vtkInterpolationWeights = {
...vtkInterpolationInfo,
positions: [0, 0, 0],
weights: null,
weightExtent: [0, -1, 0, -1, 0, -1],
kernelSize: [1, 1, 1],
workspace: null,
lastY: null,
lastZ: null,
};
export function vtkInterpolationMathFloor(x) {
const integer = Math.floor(x);
return {
floored: integer,
error: x - integer,
};
}
export function vtkInterpolationMathRound(x) {
return Math.round(x);
}
//----------------------------------------------------------------------------
// Perform a clamp to limit an index to [b, c] and subtract b.
export function vtkInterpolationMathClamp(a, b, c) {
let clamp = a <= c ? a : c;
clamp -= b;
clamp = clamp >= 0 ? clamp : 0;
return clamp;
}
//----------------------------------------------------------------------------
// Perform a wrap to limit an index to [b, c] and subtract b.
export function vtkInterpolationMathWrap(a, b, c) {
const range = c - b + 1;
let wrap = a - b;
wrap %= range;
// required for some % implementations
wrap = wrap >= 0 ? wrap : wrap + range;
return wrap;
}
//----------------------------------------------------------------------------
// Perform a mirror to limit an index to [b, c] and subtract b.
export function vtkInterpolationMathMirror(a, b, c) {
const range = c - b;
const ifzero = range === 0 ? 1 : 0;
const range2 = 2 * range + ifzero;
let mirror = a - b;
mirror = mirror >= 0 ? mirror : -mirror;
mirror %= range2;
mirror = mirror <= range ? mirror : range2 - mirror;
return mirror;
}
export default {
vtkInterpolationInfo,
vtkInterpolationWeights,
vtkInterpolationMathFloor,
vtkInterpolationMathRound,
vtkInterpolationMathClamp,
vtkInterpolationMathWrap,
vtkInterpolationMathMirror,
};
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