RectangleContextRepresentation

Source

index.js
import macro from 'vtk.js/Sources/macro';
import vtkActor from 'vtk.js/Sources/Rendering/Core/Actor';
import vtkHandleRepresentation from 'vtk.js/Sources/Widgets/Representations/HandleRepresentation';
import vtkMapper from 'vtk.js/Sources/Rendering/Core/Mapper';
import vtkPolyData from 'vtk.js/Sources/Common/DataModel/PolyData';

import { vec3 } from 'gl-matrix';

// ----------------------------------------------------------------------------
// vtkRectangleContextRepresentation methods
// ----------------------------------------------------------------------------

function vtkRectangleContextRepresentation(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkRectangleContextRepresentation');

// --------------------------------------------------------------------------
// Generic rendering pipeline
// --------------------------------------------------------------------------

model.mapper = vtkMapper.newInstance();
model.actor = vtkActor.newInstance();

model.mapper.setInputConnection(publicAPI.getOutputPort());
model.actor.setMapper(model.mapper);
model.actor.getProperty().setOpacity(0.2);
model.actor.getProperty().setColor(0, 1, 0);

publicAPI.addActor(model.actor);

// --------------------------------------------------------------------------

publicAPI.setDrawBorder = (draw) => {
model.drawBorder = draw;
};

// --------------------------------------------------------------------------

publicAPI.setDrawFace = (draw) => {
model.drawFace = draw;
};

// --------------------------------------------------------------------------

publicAPI.setOpacity = (opacity) => {
model.actor.getProperty().setOpacity(opacity);
};

// --------------------------------------------------------------------------

publicAPI.requestData = (inData, outData) => {
if (model.deleted) {
return;
}

const list = publicAPI.getRepresentationStates(inData[0]);
const state = list[0];

const dataset = vtkPolyData.newInstance();

if (state.getVisible()) {
const point1 = state.getOrigin();
const point2 = state.getCorner();
const diagonal = [0, 0, 0];
vec3.subtract(diagonal, point2, point1);
const up = state.getUp();
const upComponent = vec3.dot(diagonal, up);

const points = new Float32Array(4 * 3);
points[0] = point1[0];
points[1] = point1[1];
points[2] = point1[2];
points[3] = point1[0] + upComponent * up[0];
points[4] = point1[1] + upComponent * up[1];
points[5] = point1[2] + upComponent * up[2];
points[6] = point2[0];
points[7] = point2[1];
points[8] = point2[2];
points[9] = point2[0] - upComponent * up[0];
points[10] = point2[1] - upComponent * up[1];
points[11] = point2[2] - upComponent * up[2];

dataset.getPoints().setData(points, 3);

if (model.drawFace) {
const polys = new Uint32Array([4, 0, 1, 2, 3]);
dataset.getPolys().setData(polys, 1);
}
if (model.drawBorder) {
const line = new Uint32Array([5, 0, 1, 2, 3, 0]);
dataset.getLines().setData(line, 1);
}
} else {
dataset.getPoints().setData([], 0);
dataset.getPolys().setData([], 0);
dataset.getLines().setData([], 0);
}

outData[0] = dataset;
};

publicAPI.getSelectedState = (prop, compositeID) => model.state;
}

// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------

const DEFAULT_VALUES = {
drawBorder: false,
drawFace: true,
};

// ----------------------------------------------------------------------------

export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);

vtkHandleRepresentation.extend(publicAPI, model, initialValues);
macro.setGetArray(publicAPI, model, ['color'], 1);

macro.get(publicAPI, model, ['mapper', 'actor']);

// Object specific methods
vtkRectangleContextRepresentation(publicAPI, model);
}

// ----------------------------------------------------------------------------

export const newInstance = macro.newInstance(
extend,
'vtkRectangleContextRepresentation'
);

// ----------------------------------------------------------------------------

export default { newInstance, extend };