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| 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 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 | 3x 3x 3x 4x 4x 4x 4x 4x 4x 1x 1x 1x 1x 3x 1x 1x 4x 4x 4x 3x 3x 4x 3x 3x 3x 3x 4x 4x 4x 16x 16x 16x 4x 12x 12x 4x 4x 4x 4x 12x 12x 12x 12x 4x 4x 4x 4x 3x 3x 1x 3x 3x 3x 3x 1x | import macro from 'vtk.js/Sources/macros';
import vtkActor from 'vtk.js/Sources/Rendering/Core/Actor';
import vtkMapper from 'vtk.js/Sources/Rendering/Core/Mapper';
import * as vtkMath from 'vtk.js/Sources/Common/Core/Math';
import vtkBoundingBox from 'vtk.js/Sources/Common/DataModel/BoundingBox';
import vtkTubeFilter from 'vtk.js/Sources/Filters/General/TubeFilter';
import { getPixelWorldHeightAtCoord } from 'vtk.js/Sources/Widgets/Core/WidgetManager';
import vtkWidgetRepresentation, {
allocateArray,
} from 'vtk.js/Sources/Widgets/Representations/WidgetRepresentation';
import { RenderingTypes } from 'vtk.js/Sources/Widgets/Core/WidgetManager/Constants';
import vtkPolyData from 'vtk.js/Sources/Common/DataModel/PolyData';
// ----------------------------------------------------------------------------
// vtkPolyLineRepresentation methods
// ----------------------------------------------------------------------------
function vtkPolyLineRepresentation(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkPolyLineRepresentation');
const superClass = { ...publicAPI };
// --------------------------------------------------------------------------
// Internal polydata dataset
// --------------------------------------------------------------------------
const internalPolyData = vtkPolyData.newInstance({ mtime: 0 });
function allocateSize(polyData, size, closePolyLine = false) {
let points = null;
Iif (size < 2) {
// FIXME: Why 1 point and not 0 ?
points = allocateArray(polyData, 'points', 1).getData();
points.set([0, 0, 0]);
allocateArray(polyData, 'lines', 0).getData();
} else if (
!polyData.getPoints() ||
polyData.getPoints().length !== size * 3
) {
points = allocateArray(polyData, 'points', size).getData();
const cellSize = size + (closePolyLine ? 1 : 0);
if (
polyData.getLines().getNumberOfCells() !== 1 ||
polyData.getLines().getCellSizes()[0] !== cellSize
) {
const lines = allocateArray(polyData, 'lines', cellSize + 1); // +1 for the number of points
const cellData = lines.getData();
cellData[0] = cellSize;
for (let i = 1; i <= cellSize; i++) {
cellData[i] = i - 1;
}
Iif (closePolyLine) {
cellData[cellSize] = 0;
}
lines.setData(cellData);
}
}
return points;
}
/**
* Change the line/tube thickness.
* @param {number} lineThickness
*/
function applyLineThickness(lineThickness) {
let scaledLineThickness = lineThickness;
if (publicAPI.getScaleInPixels() && internalPolyData) {
const center = vtkBoundingBox.getCenter(internalPolyData.getBounds());
scaledLineThickness *= getPixelWorldHeightAtCoord(
center,
model.displayScaleParams
);
}
model._pipelines.tubes.filter.setRadius(scaledLineThickness);
}
// --------------------------------------------------------------------------
// Generic rendering pipeline
// --------------------------------------------------------------------------
model._pipelines = {
tubes: {
source: publicAPI,
filter: vtkTubeFilter.newInstance({
radius: model.lineThickness,
numberOfSides: 12,
capping: false,
}),
mapper: vtkMapper.newInstance(),
actor: vtkActor.newInstance({ parentProp: publicAPI }),
},
};
vtkWidgetRepresentation.connectPipeline(model._pipelines.tubes);
publicAPI.addActor(model._pipelines.tubes.actor);
// --------------------------------------------------------------------------
publicAPI.requestData = (inData, outData) => {
const state = inData[0];
outData[0] = internalPolyData;
// Remove invalid and coincident points for tube filter.
const list = publicAPI
.getRepresentationStates(state)
.reduce((subStates, subState) => {
const subStateOrigin =
subState.getOrigin && subState.getOrigin()
? subState.getOrigin()
: null;
const previousSubStateOrigin =
subStates.length && subStates[subStates.length - 1].getOrigin();
if (
!subStateOrigin ||
(previousSubStateOrigin &&
vtkMath.areEquals(subStateOrigin, previousSubStateOrigin))
) {
return subStates;
}
subStates.push(subState);
return subStates;
}, []);
const size = list.length;
const points = allocateSize(
outData[0],
size,
model.closePolyLine && size > 2
);
if (points) {
for (let i = 0; i < size; i++) {
const coords = list[i].getOrigin();
points[i * 3] = coords[0];
points[i * 3 + 1] = coords[1];
points[i * 3 + 2] = coords[2];
}
}
outData[0].getPoints().modified();
outData[0].modified();
const lineThickness = state.getLineThickness?.() ?? model.lineThickness;
applyLineThickness(lineThickness);
};
/**
* When mousing over the line, if behavior != CONTEXT,
* returns the parent state.
* @param {object} prop
* @param {number} compositeID
* @returns {object}
*/
publicAPI.getSelectedState = (prop, compositeID) => model.inputData[0];
publicAPI.updateActorVisibility = (renderingType, ctxVisible, hVisible) => {
const state = model.inputData[0];
// Make lines/tubes thicker for picking
let lineThickness = state.getLineThickness?.() ?? model.lineThickness;
if (renderingType === RenderingTypes.PICKING_BUFFER) {
lineThickness = Math.max(4, lineThickness);
}
applyLineThickness(lineThickness);
return superClass.updateActorVisibility(
renderingType,
ctxVisible,
hVisible
);
};
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
threshold: Number.EPSILON,
closePolyLine: false,
lineThickness: 2,
scaleInPixels: true,
};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
const newDefault = { ...DEFAULT_VALUES, ...initialValues };
vtkWidgetRepresentation.extend(publicAPI, model, newDefault);
macro.setGet(publicAPI, model, [
'threshold',
'closePolyLine',
'lineThickness',
]);
vtkPolyLineRepresentation(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(
extend,
'vtkPolyLineRepresentation'
);
// ----------------------------------------------------------------------------
export default { newInstance, extend };
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