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import macro from 'vtk.js/Sources/macros';
import * as vtkMath from 'vtk.js/Sources/Common/Core/Math';
const { vtkDebugMacro } = macro;
/* eslint-disable new-cap */
/*
* Convenience function to access elements of a gl-matrix. If it turns
* out I have rows and columns swapped everywhere, then I'll just change
* the order of 'row' and 'col' parameters in this function
*/
// function getMatrixElement(matrix, row, col) {
// const idx = (row * 4) + col;
// return matrix[idx];
// }
// ----------------------------------------------------------------------------
// vtkCamera methods
// ----------------------------------------------------------------------------
function vtkCamera(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkCamera');
// Set up private variables and methods
const origin = new Float64Array(3);
const dopbasis = new Float64Array([0.0, 0.0, -1.0]);
const upbasis = new Float64Array([0.0, 1.0, 0.0]);
const tmpMatrix = mat4.identity(new Float64Array(16));
const tmpMatrix2 = mat4.identity(new Float64Array(16));
const tmpvec1 = new Float64Array(3);
const tmpvec2 = new Float64Array(3);
const tmpvec3 = new Float64Array(3);
const rotateMatrix = mat4.identity(new Float64Array(16));
const trans = mat4.identity(new Float64Array(16));
const newPosition = new Float64Array(3);
const newFocalPoint = new Float64Array(3);
// Internal Functions that don't need to be public
function computeViewPlaneNormal() {
// VPN is -DOP
model.viewPlaneNormal[0] = -model.directionOfProjection[0];
model.viewPlaneNormal[1] = -model.directionOfProjection[1];
model.viewPlaneNormal[2] = -model.directionOfProjection[2];
}
publicAPI.orthogonalizeViewUp = () => {
const vt = publicAPI.getViewMatrix();
model.viewUp[0] = vt[4];
model.viewUp[1] = vt[5];
model.viewUp[2] = vt[6];
publicAPI.modified();
};
publicAPI.setPosition = (x, y, z) => {
if (
x === model.position[0] &&
y === model.position[1] &&
z === model.position[2]
) {
return;
}
model.position[0] = x;
model.position[1] = y;
model.position[2] = z;
// recompute the focal distance
publicAPI.computeDistance();
publicAPI.modified();
};
publicAPI.setFocalPoint = (x, y, z) => {
if (
x === model.focalPoint[0] &&
y === model.focalPoint[1] &&
z === model.focalPoint[2]
) {
return;
}
model.focalPoint[0] = x;
model.focalPoint[1] = y;
model.focalPoint[2] = z;
// recompute the focal distance
publicAPI.computeDistance();
publicAPI.modified();
};
publicAPI.setDistance = (d) => {
if (model.distance === d) {
return;
}
model.distance = d;
if (model.distance < 1e-20) {
model.distance = 1e-20;
vtkDebugMacro('Distance is set to minimum.');
}
// we want to keep the camera pointing in the same direction
const vec = model.directionOfProjection;
// recalculate FocalPoint
model.focalPoint[0] = model.position[0] + vec[0] * model.distance;
model.focalPoint[1] = model.position[1] + vec[1] * model.distance;
model.focalPoint[2] = model.position[2] + vec[2] * model.distance;
publicAPI.modified();
};
//----------------------------------------------------------------------------
// This method must be called when the focal point or camera position changes
publicAPI.computeDistance = () => {
const dx = model.focalPoint[0] - model.position[0];
const dy = model.focalPoint[1] - model.position[1];
const dz = model.focalPoint[2] - model.position[2];
model.distance = Math.sqrt(dx * dx + dy * dy + dz * dz);
if (model.distance < 1e-20) {
model.distance = 1e-20;
vtkDebugMacro('Distance is set to minimum.');
const vec = model.directionOfProjection;
// recalculate FocalPoint
model.focalPoint[0] = model.position[0] + vec[0] * model.distance;
model.focalPoint[1] = model.position[1] + vec[1] * model.distance;
model.focalPoint[2] = model.position[2] + vec[2] * model.distance;
}
model.directionOfProjection[0] = dx / model.distance;
model.directionOfProjection[1] = dy / model.distance;
model.directionOfProjection[2] = dz / model.distance;
computeViewPlaneNormal();
};
//----------------------------------------------------------------------------
// Move the position of the camera along the view plane normal. Moving
// towards the focal point (e.g., > 1) is a dolly-in, moving away
// from the focal point (e.g., < 1) is a dolly-out.
publicAPI.dolly = (amount) => {
Iif (amount <= 0.0) {
return;
}
// dolly moves the camera towards the focus
const d = model.distance / amount;
publicAPI.setPosition(
model.focalPoint[0] - d * model.directionOfProjection[0],
model.focalPoint[1] - d * model.directionOfProjection[1],
model.focalPoint[2] - d * model.directionOfProjection[2]
);
};
publicAPI.roll = (angle) => {
const eye = model.position;
const at = model.focalPoint;
const up = model.viewUp;
const viewUpVec4 = new Float64Array([up[0], up[1], up[2], 0.0]);
mat4.identity(rotateMatrix);
const viewDir = new Float64Array([
at[0] - eye[0],
at[1] - eye[1],
at[2] - eye[2],
]);
mat4.rotate(
rotateMatrix,
rotateMatrix,
vtkMath.radiansFromDegrees(angle),
viewDir
);
vec4.transformMat4(viewUpVec4, viewUpVec4, rotateMatrix);
model.viewUp[0] = viewUpVec4[0];
model.viewUp[1] = viewUpVec4[1];
model.viewUp[2] = viewUpVec4[2];
publicAPI.modified();
};
publicAPI.azimuth = (angle) => {
const fp = model.focalPoint;
mat4.identity(trans);
// translate the focal point to the origin,
// rotate about view up,
// translate back again
mat4.translate(trans, trans, fp);
mat4.rotate(trans, trans, vtkMath.radiansFromDegrees(angle), model.viewUp);
mat4.translate(trans, trans, [-fp[0], -fp[1], -fp[2]]);
// apply the transform to the position
vec3.transformMat4(newPosition, model.position, trans);
publicAPI.setPosition(newPosition[0], newPosition[1], newPosition[2]);
};
publicAPI.yaw = (angle) => {
const position = model.position;
mat4.identity(trans);
// translate the camera to the origin,
// rotate about axis,
// translate back again
mat4.translate(trans, trans, position);
mat4.rotate(trans, trans, vtkMath.radiansFromDegrees(angle), model.viewUp);
mat4.translate(trans, trans, [-position[0], -position[1], -position[2]]);
// apply the transform to the position
vec3.transformMat4(newFocalPoint, model.focalPoint, trans);
publicAPI.setFocalPoint(
newFocalPoint[0],
newFocalPoint[1],
newFocalPoint[2]
);
};
publicAPI.elevation = (angle) => {
const fp = model.focalPoint;
// get the eye / camera position from the viewMatrix
const vt = publicAPI.getViewMatrix();
const axis = [-vt[0], -vt[1], -vt[2]];
mat4.identity(trans);
// translate the focal point to the origin,
// rotate about view up,
// translate back again
mat4.translate(trans, trans, fp);
mat4.rotate(trans, trans, vtkMath.radiansFromDegrees(angle), axis);
mat4.translate(trans, trans, [-fp[0], -fp[1], -fp[2]]);
// apply the transform to the position
vec3.transformMat4(newPosition, model.position, trans);
publicAPI.setPosition(newPosition[0], newPosition[1], newPosition[2]);
};
publicAPI.pitch = (angle) => {
const position = model.position;
const vt = publicAPI.getViewMatrix();
const axis = [vt[0], vt[1], vt[2]];
mat4.identity(trans);
// translate the camera to the origin,
// rotate about axis,
// translate back again
mat4.translate(trans, trans, position);
mat4.rotate(trans, trans, vtkMath.radiansFromDegrees(angle), axis);
mat4.translate(trans, trans, [-position[0], -position[1], -position[2]]);
// apply the transform to the focal point
vec3.transformMat4(newFocalPoint, model.focalPoint, trans);
publicAPI.setFocalPoint(...newFocalPoint);
};
publicAPI.zoom = (factor) => {
Iif (factor <= 0) {
return;
}
Iif (model.parallelProjection) {
model.parallelScale /= factor;
} else {
model.viewAngle /= factor;
}
publicAPI.modified();
};
publicAPI.translate = (x, y, z) => {
const offset = [x, y, z];
vtkMath.add(model.position, offset, model.position);
vtkMath.add(model.focalPoint, offset, model.focalPoint);
publicAPI.computeDistance();
publicAPI.modified();
};
publicAPI.applyTransform = (transformMat4) => {
const vuOld = [...model.viewUp, 1.0];
const posNew = [];
const fpNew = [];
const vuNew = [];
vuOld[0] += model.position[0];
vuOld[1] += model.position[1];
vuOld[2] += model.position[2];
vec4.transformMat4(posNew, [...model.position, 1.0], transformMat4);
vec4.transformMat4(fpNew, [...model.focalPoint, 1.0], transformMat4);
vec4.transformMat4(vuNew, vuOld, transformMat4);
vuNew[0] -= posNew[0];
vuNew[1] -= posNew[1];
vuNew[2] -= posNew[2];
publicAPI.setPosition(...posNew.slice(0, 3));
publicAPI.setFocalPoint(...fpNew.slice(0, 3));
publicAPI.setViewUp(...vuNew.slice(0, 3));
};
publicAPI.getThickness = () =>
model.clippingRange[1] - model.clippingRange[0];
publicAPI.setThickness = (thickness) => {
let t = thickness;
if (t < 1e-20) {
t = 1e-20;
vtkDebugMacro('Thickness is set to minimum.');
}
publicAPI.setClippingRange(
model.clippingRange[0],
model.clippingRange[0] + t
);
};
publicAPI.setThicknessFromFocalPoint = (thickness) => {
let t = thickness;
if (t < 1e-20) {
t = 1e-20;
vtkDebugMacro('Thickness is set to minimum.');
}
publicAPI.setClippingRange(model.distance - t / 2, model.distance + t / 2);
};
// Unimplemented functions
publicAPI.setRoll = (angle) => {}; // dependency on GetOrientation() and a model.ViewTransform object, see https://github.com/Kitware/VTK/blob/master/Common/Transforms/vtkTransform.cxx and https://vtk.org/doc/nightly/html/classvtkTransform.html
publicAPI.getRoll = () => {};
publicAPI.setObliqueAngles = (alpha, beta) => {};
publicAPI.getOrientation = () => {};
publicAPI.getOrientationWXYZ = () => {};
publicAPI.getFrustumPlanes = (aspect) => {
// Return array of 24 params (4 params for each of 6 plane equations)
};
publicAPI.getCameraLightTransformMatrix = (matrix) => {
mat4.copy(matrix, model.cameraLightTransform);
return matrix;
};
publicAPI.computeCameraLightTransform = () => {
// not sure if this is the correct transformation, based on the same funciton in VTK
mat4.copy(tmpMatrix, publicAPI.getViewMatrix());
mat4.invert(tmpMatrix, tmpMatrix);
mat4.fromScaling(tmpMatrix2, [
model.distance,
model.distance,
model.distance,
]);
mat4.multiply(tmpMatrix, tmpMatrix, tmpMatrix2);
mat4.identity(model.cameraLightTransform);
mat4.translate(model.cameraLightTransform, tmpMatrix, [0.0, 0.0, -1.0]);
};
publicAPI.deepCopy = (sourceCamera) => {};
publicAPI.physicalOrientationToWorldDirection = (ori) => {
// push the x axis through the orientation quat
const oriq = quat.fromValues(ori[0], ori[1], ori[2], ori[3]);
const coriq = quat.create();
const qdir = quat.fromValues(0.0, 0.0, 1.0, 0.0);
quat.conjugate(coriq, oriq);
// rotate the z axis by the quat
quat.multiply(qdir, oriq, qdir);
quat.multiply(qdir, qdir, coriq);
// return the z axis in world coords
return [qdir[0], qdir[1], qdir[2]];
};
publicAPI.getPhysicalToWorldMatrix = (result) => {
publicAPI.getWorldToPhysicalMatrix(result);
mat4.invert(result, result);
};
publicAPI.getWorldToPhysicalMatrix = (result) => {
mat4.identity(result);
// now the physical to vtk world rotation tform
const physVRight = [3];
vtkMath.cross(model.physicalViewNorth, model.physicalViewUp, physVRight);
result[0] = physVRight[0];
result[1] = physVRight[1];
result[2] = physVRight[2];
result[4] = model.physicalViewUp[0];
result[5] = model.physicalViewUp[1];
result[6] = model.physicalViewUp[2];
result[8] = -model.physicalViewNorth[0];
result[9] = -model.physicalViewNorth[1];
result[10] = -model.physicalViewNorth[2];
mat4.transpose(result, result);
vec3.set(
tmpvec1,
1 / model.physicalScale,
1 / model.physicalScale,
1 / model.physicalScale
);
mat4.scale(result, result, tmpvec1);
mat4.translate(result, result, model.physicalTranslation);
};
publicAPI.computeViewParametersFromViewMatrix = (vmat) => {
// invert to get view to world
mat4.invert(tmpMatrix, vmat);
// note with glmatrix operations happen in
// the reverse order
// mat.scale
// mat.translate
// will result in the translation then the scale
// mat.mult(a,b)
// results in perform the B transformation then A
// then extract the params position, orientation
// push 0,0,0 through to get a translation
vec3.transformMat4(tmpvec1, origin, tmpMatrix);
publicAPI.computeDistance();
const oldDist = model.distance;
publicAPI.setPosition(tmpvec1[0], tmpvec1[1], tmpvec1[2]);
// push basis vectors to get orientation
vec3.transformMat4(tmpvec2, dopbasis, tmpMatrix);
vec3.subtract(tmpvec2, tmpvec2, tmpvec1);
vec3.normalize(tmpvec2, tmpvec2);
publicAPI.setDirectionOfProjection(tmpvec2[0], tmpvec2[1], tmpvec2[2]);
vec3.transformMat4(tmpvec3, upbasis, tmpMatrix);
vec3.subtract(tmpvec3, tmpvec3, tmpvec1);
vec3.normalize(tmpvec3, tmpvec3);
publicAPI.setViewUp(tmpvec3[0], tmpvec3[1], tmpvec3[2]);
publicAPI.setDistance(oldDist);
};
// the provided matrix should include
// translation and orientation only
// mat is physical to view
publicAPI.computeViewParametersFromPhysicalMatrix = (mat) => {
// get the WorldToPhysicalMatrix
publicAPI.getWorldToPhysicalMatrix(tmpMatrix);
// first convert the physical -> view matrix to be
// world -> view
mat4.multiply(tmpMatrix, mat, tmpMatrix);
publicAPI.computeViewParametersFromViewMatrix(tmpMatrix);
};
publicAPI.setViewMatrix = (mat) => {
model.viewMatrix = mat;
if (model.viewMatrix) {
mat4.copy(tmpMatrix, model.viewMatrix);
publicAPI.computeViewParametersFromViewMatrix(tmpMatrix);
mat4.transpose(model.viewMatrix, model.viewMatrix);
}
};
publicAPI.getViewMatrix = () => {
Iif (model.viewMatrix) {
return model.viewMatrix;
}
mat4.lookAt(
tmpMatrix,
model.position, // eye
model.focalPoint, // at
model.viewUp // up
);
mat4.transpose(tmpMatrix, tmpMatrix);
const result = new Float64Array(16);
mat4.copy(result, tmpMatrix);
return result;
};
publicAPI.setProjectionMatrix = (mat) => {
model.projectionMatrix = mat;
};
publicAPI.getProjectionMatrix = (aspect, nearz, farz) => {
const result = new Float64Array(16);
mat4.identity(result);
Iif (model.projectionMatrix) {
const scale = 1 / model.physicalScale;
vec3.set(tmpvec1, scale, scale, scale);
mat4.copy(result, model.projectionMatrix);
mat4.scale(result, result, tmpvec1);
mat4.transpose(result, result);
return result;
}
mat4.identity(tmpMatrix);
// FIXME: Not sure what to do about adjust z buffer here
// adjust Z-buffer range
// this->ProjectionTransform->AdjustZBuffer( -1, +1, nearz, farz );
const cWidth = model.clippingRange[1] - model.clippingRange[0];
const cRange = [
model.clippingRange[0] + ((nearz + 1) * cWidth) / 2.0,
model.clippingRange[0] + ((farz + 1) * cWidth) / 2.0,
];
if (model.parallelProjection) {
// set up a rectangular parallelipiped
const width = model.parallelScale * aspect;
const height = model.parallelScale;
const xmin = (model.windowCenter[0] - 1.0) * width;
const xmax = (model.windowCenter[0] + 1.0) * width;
const ymin = (model.windowCenter[1] - 1.0) * height;
const ymax = (model.windowCenter[1] + 1.0) * height;
mat4.ortho(tmpMatrix, xmin, xmax, ymin, ymax, cRange[0], cRange[1]);
mat4.transpose(tmpMatrix, tmpMatrix);
} else Iif (model.useOffAxisProjection) {
throw new Error('Off-Axis projection is not supported at this time');
} else {
const tmp = Math.tan(vtkMath.radiansFromDegrees(model.viewAngle) / 2.0);
let width;
let height;
Iif (model.useHorizontalViewAngle === true) {
width = model.clippingRange[0] * tmp;
height = (model.clippingRange[0] * tmp) / aspect;
} else {
width = model.clippingRange[0] * tmp * aspect;
height = model.clippingRange[0] * tmp;
}
const xmin = (model.windowCenter[0] - 1.0) * width;
const xmax = (model.windowCenter[0] + 1.0) * width;
const ymin = (model.windowCenter[1] - 1.0) * height;
const ymax = (model.windowCenter[1] + 1.0) * height;
const znear = cRange[0];
const zfar = cRange[1];
tmpMatrix[0] = (2.0 * znear) / (xmax - xmin);
tmpMatrix[5] = (2.0 * znear) / (ymax - ymin);
tmpMatrix[2] = (xmin + xmax) / (xmax - xmin);
tmpMatrix[6] = (ymin + ymax) / (ymax - ymin);
tmpMatrix[10] = -(znear + zfar) / (zfar - znear);
tmpMatrix[14] = -1.0;
tmpMatrix[11] = (-2.0 * znear * zfar) / (zfar - znear);
tmpMatrix[15] = 0.0;
}
mat4.copy(result, tmpMatrix);
return result;
};
publicAPI.getCompositeProjectionMatrix = (aspect, nearz, farz) => {
const vMat = publicAPI.getViewMatrix();
const pMat = publicAPI.getProjectionMatrix(aspect, nearz, farz);
// mats are transposed so the order is A then B
// we reuse pMat as it is a copy so we can do what we want with it
mat4.multiply(pMat, vMat, pMat);
return pMat;
};
publicAPI.setDirectionOfProjection = (x, y, z) => {
Iif (
model.directionOfProjection[0] === x &&
model.directionOfProjection[1] === y &&
model.directionOfProjection[2] === z
) {
return;
}
model.directionOfProjection[0] = x;
model.directionOfProjection[1] = y;
model.directionOfProjection[2] = z;
const vec = model.directionOfProjection;
// recalculate FocalPoint
model.focalPoint[0] = model.position[0] + vec[0] * model.distance;
model.focalPoint[1] = model.position[1] + vec[1] * model.distance;
model.focalPoint[2] = model.position[2] + vec[2] * model.distance;
computeViewPlaneNormal();
};
// used to handle convert js device orientation angles
// when you use this method the camera will adjust to the
// device orientation such that the physicalViewUp you set
// in world coordinates looks up, and the physicalViewNorth
// you set in world coorindates will (maybe) point north
//
// NOTE WARNING - much of the documentation out there on how
// orientation works is seriously wrong. Even worse the Chrome
// device orientation simulator is completely wrong and should
// never be used. OMG it is so messed up.
//
// how it seems to work on iOS is that the device orientation
// is specified in extrinsic angles with a alpha, beta, gamma
// convention with axes of Z, X, Y (the code below substitutes
// the physical coordinate system for these axes to get the right
// modified coordinate system.
publicAPI.setDeviceAngles = (alpha, beta, gamma, screen) => {
const physVRight = [3];
vtkMath.cross(model.physicalViewNorth, model.physicalViewUp, physVRight);
// phone to physical coordinates
const rotmat = mat4.identity(new Float64Array(16));
mat4.rotate(
rotmat,
rotmat,
vtkMath.radiansFromDegrees(alpha),
model.physicalViewUp
);
mat4.rotate(rotmat, rotmat, vtkMath.radiansFromDegrees(beta), physVRight);
mat4.rotate(
rotmat,
rotmat,
vtkMath.radiansFromDegrees(gamma),
model.physicalViewNorth
);
mat4.rotate(
rotmat,
rotmat,
vtkMath.radiansFromDegrees(-screen),
model.physicalViewUp
);
const dop = new Float64Array([
-model.physicalViewUp[0],
-model.physicalViewUp[1],
-model.physicalViewUp[2],
]);
const vup = new Float64Array(model.physicalViewNorth);
vec3.transformMat4(dop, dop, rotmat);
vec3.transformMat4(vup, vup, rotmat);
publicAPI.setDirectionOfProjection(dop[0], dop[1], dop[2]);
publicAPI.setViewUp(vup[0], vup[1], vup[2]);
publicAPI.modified();
};
publicAPI.setOrientationWXYZ = (degrees, x, y, z) => {
const quatMat = mat4.identity(new Float64Array(16));
if (degrees !== 0.0 && (x !== 0.0 || y !== 0.0 || z !== 0.0)) {
// convert to radians
const angle = vtkMath.radiansFromDegrees(degrees);
const q = quat.create();
quat.setAxisAngle(q, [x, y, z], angle);
mat4.fromQuat(quatMat, q);
}
const newdop = new Float64Array(3);
vec3.transformMat4(newdop, [0.0, 0.0, -1.0], quatMat);
const newvup = new Float64Array(3);
vec3.transformMat4(newvup, [0.0, 1.0, 0.0], quatMat);
publicAPI.setDirectionOfProjection(...newdop);
publicAPI.setViewUp(...newvup);
publicAPI.modified();
};
publicAPI.computeClippingRange = (bounds) => {
let vn = null;
let position = null;
vn = model.viewPlaneNormal;
position = model.position;
const a = -vn[0];
const b = -vn[1];
const c = -vn[2];
const d = -(a * position[0] + b * position[1] + c * position[2]);
// Set the max near clipping plane and the min far clipping plane
const range = [a * bounds[0] + b * bounds[2] + c * bounds[4] + d, 1e-18];
// Find the closest / farthest bounding box vertex
for (let k = 0; k < 2; k++) {
for (let j = 0; j < 2; j++) {
for (let i = 0; i < 2; i++) {
const dist =
a * bounds[i] + b * bounds[2 + j] + c * bounds[4 + k] + d;
range[0] = dist < range[0] ? dist : range[0];
range[1] = dist > range[1] ? dist : range[1];
}
}
}
return range;
};
}
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
export const DEFAULT_VALUES = {
position: [0, 0, 1],
focalPoint: [0, 0, 0],
viewUp: [0, 1, 0],
directionOfProjection: [0, 0, -1],
parallelProjection: false,
useHorizontalViewAngle: false,
viewAngle: 30,
parallelScale: 1,
clippingRange: [0.01, 1000.01],
windowCenter: [0, 0],
viewPlaneNormal: [0, 0, 1],
useOffAxisProjection: false,
screenBottomLeft: [-0.5, -0.5, -0.5],
screenBottomRight: [0.5, -0.5, -0.5],
screenTopRight: [0.5, 0.5, -0.5],
freezeFocalPoint: false,
projectionMatrix: null,
viewMatrix: null,
cameraLightTransform: mat4.create(),
// used for world to physical transformations
physicalTranslation: [0, 0, 0],
physicalScale: 1.0,
physicalViewUp: [0, 1, 0],
physicalViewNorth: [0, 0, -1],
};
// ----------------------------------------------------------------------------
export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);
// Build VTK API
macro.obj(publicAPI, model);
macro.get(publicAPI, model, ['distance']);
macro.setGet(publicAPI, model, [
'parallelProjection',
'useHorizontalViewAngle',
'viewAngle',
'parallelScale',
'useOffAxisProjection',
'freezeFocalPoint',
'physicalScale',
]);
macro.getArray(publicAPI, model, [
'directionOfProjection',
'viewPlaneNormal',
'position',
'focalPoint',
]);
macro.setGetArray(publicAPI, model, ['clippingRange', 'windowCenter'], 2);
macro.setGetArray(
publicAPI,
model,
[
'viewUp',
'screenBottomLeft',
'screenBottomRight',
'screenTopRight',
'physicalTranslation',
'physicalViewUp',
'physicalViewNorth',
],
3
);
// Object methods
vtkCamera(publicAPI, model);
}
// ----------------------------------------------------------------------------
export const newInstance = macro.newInstance(extend, 'vtkCamera');
// ----------------------------------------------------------------------------
export default { newInstance, extend };
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