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 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 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | import macro from 'vtk.js/Sources/macros';
import vtkCompositeCameraManipulator from 'vtk.js/Sources/Interaction/Manipulators/CompositeCameraManipulator';
import vtkCompositeMouseManipulator from 'vtk.js/Sources/Interaction/Manipulators/CompositeMouseManipulator';
import * as vtkMath from 'vtk.js/Sources/Common/Core/Math';
// ----------------------------------------------------------------------------
// vtkMouseCameraSliceManipulator methods
// ----------------------------------------------------------------------------
function vtkMouseCameraSliceManipulator(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkMouseCameraSliceManipulator');
publicAPI.onButtonDown = (interactor, renderer, position) => {
model.previousPosition = position;
};
publicAPI.onMouseMove = (interactor, renderer, position) => {
if (!position) {
return;
}
const dy = position.y - model.previousPosition.y;
const camera = renderer.getActiveCamera();
const range = camera.getClippingRange();
let distance = camera.getDistance();
// scale the interaction by the height of the viewport
let viewportHeight = 0.0;
if (camera.getParallelProjection()) {
viewportHeight = 2.0 * camera.getParallelScale();
} else {
const angle = vtkMath.radiansFromDegrees(camera.getViewAngle());
viewportHeight = 2.0 * distance * Math.tan(0.5 * angle);
}
const size = interactor.getView().getViewportSize(renderer);
const delta = (dy * viewportHeight) / size[1];
distance += delta;
// clamp the distance to the clipping range
if (distance < range[0]) {
distance = range[0] + viewportHeight * 1e-3;
}
if (distance > range[1]) {
distance = range[1] - viewportHeight * 1e-3;
}
camera.setDistance(distance);
model.previousPosition = position;
};
publicAPI.onScroll = (interactor, renderer, delta) => {
if (!delta) {
return;
}
let scrollDelta = 1.0 - delta;
scrollDelta *= 25; // TODO: expose factor?
const camera = renderer.getActiveCamera();
const range = camera.getClippingRange();
let distance = camera.getDistance();
distance += scrollDelta;
// clamp the distance to the clipping range
if (distance < range[0]) {
distance = range[0];
}
if (distance > range[1]) {
distance = range[1];
}
camera.setDistance(distance);
};
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);
// Inheritance
macro.obj(publicAPI, model);
vtkCompositeCameraManipulator.extend(publicAPI, model, initialValues);
vtkCompositeMouseManipulator.extend(publicAPI, model, initialValues);
// Object specific methods
vtkMouseCameraSliceManipulator(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(
extend,
'vtkMouseCameraSliceManipulator'
);
// ----------------------------------------------------------------------------
export default { newInstance, extend };
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