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.. raw:: html
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const RENDERERS = {};
var ID = 0;
const renderWindow = vtk.Rendering.Core.vtkRenderWindow.newInstance();
const openglRenderWindow = vtk.Rendering.OpenGL.vtkRenderWindow.newInstance();
renderWindow.addView(openglRenderWindow);
const rootContainer = document.createElement('div');
rootContainer.style.position = 'fixed';
//rootContainer.style.zIndex = -1;
rootContainer.style.left = 0;
rootContainer.style.top = 0;
rootContainer.style.pointerEvents = 'none';
rootContainer.style.width = '100%';
rootContainer.style.height = '100%';
openglRenderWindow.setContainer(rootContainer);
const interact_style = vtk.Interaction.Style.vtkInteractorStyleManipulator.newInstance();
const manips = {
rot: vtk.Interaction.Manipulators.vtkMouseCameraTrackballRotateManipulator.newInstance(),
pan: vtk.Interaction.Manipulators.vtkMouseCameraTrackballPanManipulator.newInstance(),
zoom1: vtk.Interaction.Manipulators.vtkMouseCameraTrackballZoomManipulator.newInstance(),
zoom2: vtk.Interaction.Manipulators.vtkMouseCameraTrackballZoomManipulator.newInstance(),
roll: vtk.Interaction.Manipulators.vtkMouseCameraTrackballRollManipulator.newInstance(),
};
manips.rot.setUseFocalPointAsCenterOfRotation(true);
manips.zoom1.setControl(true);
manips.zoom2.setButton(3);
manips.roll.setShift(true);
manips.pan.setButton(2);
for (var k in manips){{
interact_style.addMouseManipulator(manips[k]);
}};
const interactor = vtk.Rendering.Core.vtkRenderWindowInteractor.newInstance();
interactor.setView(openglRenderWindow);
interactor.initialize();
interactor.setInteractorStyle(interact_style);
document.addEventListener('DOMContentLoaded', function () {
document.body.appendChild(rootContainer);
});
function updateViewPort(element, renderer) {
const { innerHeight, innerWidth } = window;
const { x, y, width, height } = element.getBoundingClientRect();
const viewport = [
x / innerWidth,
1 - (y + height) / innerHeight,
(x + width) / innerWidth,
1 - y / innerHeight,
];
renderer.setViewport(...viewport);
}
function recomputeViewports() {
const rendererElems = document.querySelectorAll('.renderer');
for (let i = 0; i < rendererElems.length; i++) {
const elem = rendererElems[i];
const { id } = elem;
const renderer = RENDERERS[id];
updateViewPort(elem, renderer);
}
renderWindow.render();
}
function resize() {
rootContainer.style.width = `${window.innerWidth}px`;
openglRenderWindow.setSize(window.innerWidth, window.innerHeight);
recomputeViewports();
}
window.addEventListener('resize', resize);
document.addEventListener('scroll', recomputeViewports);
function enterCurrentRenderer(e) {
interactor.bindEvents(document.body);
interact_style.setEnabled(true);
interactor.setCurrentRenderer(RENDERERS[e.target.id]);
}
function exitCurrentRenderer(e) {
interactor.setCurrentRenderer(null);
interact_style.setEnabled(false);
interactor.unbindEvents();
}
function applyStyle(element) {
element.classList.add('renderer');
element.style.width = '100%';
element.style.height = '100%';
element.style.display = 'inline-block';
element.style.boxSizing = 'border';
return element;
}
window.addEventListener('load', resize);
function render(data, parent_element, ratio){
// Initial setup
const renderer = vtk.Rendering.Core.vtkRenderer.newInstance({ background: [1, 1, 1 ] });
// iterate over all children children
for (var el of data){
var trans = el.position;
var rot = el.orientation;
var rgba = el.color;
var shape = el.shape;
// load the inline data
var reader = vtk.IO.XML.vtkXMLPolyDataReader.newInstance();
const textEncoder = new TextEncoder();
reader.parseAsArrayBuffer(textEncoder.encode(shape));
// setup actor,mapper and add
const mapper = vtk.Rendering.Core.vtkMapper.newInstance();
mapper.setInputConnection(reader.getOutputPort());
mapper.setResolveCoincidentTopologyToPolygonOffset();
mapper.setResolveCoincidentTopologyPolygonOffsetParameters(0.5,100);
const actor = vtk.Rendering.Core.vtkActor.newInstance();
actor.setMapper(mapper);
// set color and position
actor.getProperty().setColor(rgba.slice(0,3));
actor.getProperty().setOpacity(rgba[3]);
actor.rotateZ(rot[2]*180/Math.PI);
actor.rotateY(rot[1]*180/Math.PI);
actor.rotateX(rot[0]*180/Math.PI);
actor.setPosition(trans);
renderer.addActor(actor);
};
//add the container
const container = applyStyle(document.createElement("div"));
parent_element.appendChild(container);
container.addEventListener('mouseenter', enterCurrentRenderer);
container.addEventListener('mouseleave', exitCurrentRenderer);
container.id = ID;
renderWindow.addRenderer(renderer);
updateViewPort(container, renderer);
renderer.getActiveCamera().set({ position: [1, -1, 1], viewUp: [0, 0, 1] });
renderer.resetCamera();
RENDERERS[ID] = renderer;
ID++;
};
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