@thewtex/vtk.js-esm/Rendering/OpenGL/Camera.js

Visualization Toolkit for the Web

import { obj, setGet, newInstance as newInstance$1 } from '../../macro.js';
import vtkViewNode from '../SceneGraph/ViewNode.js';
import { registerOverride } from './ViewNodeFactory.js';
import { d as copy, j as transpose, m as multiply } from '../../vendor/gl-matrix/esm/mat4.js';
import { f as fromMat4, a as invert } from '../../vendor/gl-matrix/esm/mat3.js';

// vtkOpenGLCamera methods
// ----------------------------------------------------------------------------

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

  publicAPI.buildPass = function (prepass) {
    if (prepass) {
      model.openGLRenderer = publicAPI.getFirstAncestorOfType('vtkOpenGLRenderer');
      model.openGLRenderWindow = model.openGLRenderer.getParent();
      model.context = model.openGLRenderWindow.getContext();
    }
  }; // Renders myself


  publicAPI.opaquePass = function (prepass) {
    if (prepass) {
      var tsize = model.openGLRenderer.getTiledSizeAndOrigin();
      model.context.viewport(tsize.lowerLeftU, tsize.lowerLeftV, tsize.usize, tsize.vsize);
      model.context.scissor(tsize.lowerLeftU, tsize.lowerLeftV, tsize.usize, tsize.vsize);
    }
  };

  publicAPI.translucentPass = publicAPI.opaquePass;
  publicAPI.opaqueZBufferPass = publicAPI.opaquePass;
  publicAPI.volumePass = publicAPI.opaquePass;

  publicAPI.getKeyMatrices = function (ren) {
    // has the camera changed?
    if (ren !== model.lastRenderer || model.openGLRenderWindow.getMTime() > model.keyMatrixTime.getMTime() || publicAPI.getMTime() > model.keyMatrixTime.getMTime() || ren.getMTime() > model.keyMatrixTime.getMTime() || model.renderable.getMTime() > model.keyMatrixTime.getMTime()) {
      copy(model.keyMatrices.wcvc, model.renderable.getViewMatrix());
      fromMat4(model.keyMatrices.normalMatrix, model.keyMatrices.wcvc);
      invert(model.keyMatrices.normalMatrix, model.keyMatrices.normalMatrix);
      transpose(model.keyMatrices.wcvc, model.keyMatrices.wcvc);
      var aspectRatio = model.openGLRenderer.getAspectRatio();
      copy(model.keyMatrices.vcpc, model.renderable.getProjectionMatrix(aspectRatio, -1, 1));
      transpose(model.keyMatrices.vcpc, model.keyMatrices.vcpc);
      multiply(model.keyMatrices.wcpc, model.keyMatrices.vcpc, model.keyMatrices.wcvc);
      model.keyMatrixTime.modified();
      model.lastRenderer = ren;
    }

    return model.keyMatrices;
  };
} // ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------


var DEFAULT_VALUES = {
  context: null,
  lastRenderer: null,
  keyMatrixTime: null,
  keyMatrices: null
}; // ----------------------------------------------------------------------------

function extend(publicAPI, model) {
  var initialValues = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
  Object.assign(model, DEFAULT_VALUES, initialValues); // Inheritance

  vtkViewNode.extend(publicAPI, model, initialValues);
  model.keyMatrixTime = {};
  obj(model.keyMatrixTime); // values always get set by the get method

  model.keyMatrices = {
    normalMatrix: new Float64Array(9),
    vcpc: new Float64Array(16),
    wcvc: new Float64Array(16),
    wcpc: new Float64Array(16)
  }; // Build VTK API

  setGet(publicAPI, model, ['context', 'keyMatrixTime']); // Object methods

  vtkOpenGLCamera(publicAPI, model);
} // ----------------------------------------------------------------------------

var newInstance = newInstance$1(extend); // ----------------------------------------------------------------------------

var vtkCamera = {
  newInstance: newInstance,
  extend: extend
}; // Register ourself to OpenGL backend if imported

registerOverride('vtkCamera', newInstance);

export default vtkCamera;
export { extend, newInstance };