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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 | 24x 24x 24x 24x 1x 24x 24x 24x 24x 24x 24x 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';
// ----------------------------------------------------------------------------
// vtkMouseCameraTrackballZoomManipulator methods
// ----------------------------------------------------------------------------
function vtkMouseCameraTrackballZoomManipulator(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkMouseCameraTrackballZoomManipulator');
publicAPI.onButtonDown = (interactor, renderer, position) => {
model.previousPosition = position;
const size = interactor.getView().getViewportSize(renderer);
const camera = renderer.getActiveCamera();
const direction = model.flipDirection ? -1 : 1;
if (camera.getParallelProjection()) {
model.zoomScale = (1.5 / size[1]) * direction;
} else {
const range = camera.getClippingRange();
model.zoomScale = 1.5 * (range[1] / size[1]) * direction;
}
};
publicAPI.onMouseMove = (interactor, renderer, position) => {
if (!position) {
return;
}
const dy = model.previousPosition.y - position.y;
const camera = renderer.getActiveCamera();
if (camera.getParallelProjection()) {
const k = dy * model.zoomScale;
camera.setParallelScale((1.0 - k) * camera.getParallelScale());
} else {
const cameraPos = camera.getPosition();
const cameraFp = camera.getFocalPoint();
const norm = camera.getDirectionOfProjection();
const k = dy * model.zoomScale;
let tmp = k * norm[0];
cameraPos[0] += tmp;
cameraFp[0] += tmp;
tmp = k * norm[1];
cameraPos[1] += tmp;
cameraFp[1] += tmp;
tmp = k * norm[2];
cameraPos[2] += tmp;
cameraFp[2] += tmp;
if (!camera.getFreezeFocalPoint()) {
camera.setFocalPoint(cameraFp[0], cameraFp[1], cameraFp[2]);
}
camera.setPosition(cameraPos[0], cameraPos[1], cameraPos[2]);
renderer.resetCameraClippingRange();
}
if (interactor.getLightFollowCamera()) {
renderer.updateLightsGeometryToFollowCamera();
}
model.previousPosition = position;
};
publicAPI.onScroll = (interactor, renderer, delta) => {
if (!delta) {
return;
}
const camera = renderer.getActiveCamera();
const dyf = 1 - delta / 10;
if (camera.getParallelProjection()) {
camera.setParallelScale(camera.getParallelScale() / dyf);
} else {
camera.dolly(dyf);
renderer.resetCameraClippingRange();
}
if (interactor.getLightFollowCamera()) {
renderer.updateLightsGeometryToFollowCamera();
}
};
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
const DEFAULT_VALUES = {
zoomScale: 0.0,
flipDirection: false,
};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);
// Inheritance
macro.obj(publicAPI, model);
vtkCompositeMouseManipulator.extend(publicAPI, model, initialValues);
vtkCompositeCameraManipulator.extend(publicAPI, model, initialValues);
macro.setGet(publicAPI, model, ['flipDirection']);
// Object specific methods
vtkMouseCameraTrackballZoomManipulator(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(
extend,
'vtkMouseCameraTrackballZoomManipulator'
);
// ----------------------------------------------------------------------------
export default { newInstance, extend };
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