@kitware/vtk.js/Rendering/OpenGL/ImageSlice.js

Visualization Toolkit for the Web

import { mat4 } from 'gl-matrix';
import { newInstance as newInstance$1, obj, setGet } from '../../macros.js';
import vtkViewNode from '../SceneGraph/ViewNode.js';
import { registerOverride } from './ViewNodeFactory.js';

// vtkOpenGLImageSlice methods
// ----------------------------------------------------------------------------

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

  publicAPI.buildPass = function (prepass) {
    if (!model.renderable || !model.renderable.getVisibility()) {
      return;
    }

    if (prepass) {
      if (!model.renderable) {
        return;
      }

      model._openGLRenderWindow = publicAPI.getFirstAncestorOfType('vtkOpenGLRenderWindow');
      model._openGLRenderer = publicAPI.getFirstAncestorOfType('vtkOpenGLRenderer');
      model.context = model._openGLRenderWindow.getContext();
      publicAPI.prepareNodes();
      publicAPI.addMissingNode(model.renderable.getMapper());
      publicAPI.removeUnusedNodes();
    }
  };

  publicAPI.traverseZBufferPass = function (renderPass) {
    if (!model.renderable || !model.renderable.getNestedVisibility() || model._openGLRenderer.getSelector() && !model.renderable.getNestedPickable()) {
      return;
    }

    publicAPI.apply(renderPass, true);
    model.children.forEach(function (child) {
      child.traverse(renderPass);
    });
    publicAPI.apply(renderPass, false);
  };

  publicAPI.traverseOpaqueZBufferPass = function (renderPass) {
    return publicAPI.traverseOpaquePass(renderPass);
  }; // we draw textures, then mapper, then post pass textures


  publicAPI.traverseOpaquePass = function (renderPass) {
    if (!model.renderable || !model.renderable.getNestedVisibility() || !model.renderable.getIsOpaque() || model._openGLRenderer.getSelector() && !model.renderable.getNestedPickable()) {
      return;
    }

    publicAPI.apply(renderPass, true);
    model.children.forEach(function (child) {
      child.traverse(renderPass);
    });
    publicAPI.apply(renderPass, false);
  }; // we draw textures, then mapper, then post pass textures


  publicAPI.traverseTranslucentPass = function (renderPass) {
    if (!model.renderable || !model.renderable.getNestedVisibility() || model.renderable.getIsOpaque() || model._openGLRenderer.getSelector() && !model.renderable.getNestedPickable()) {
      return;
    }

    publicAPI.apply(renderPass, true);
    model.children.forEach(function (child) {
      child.traverse(renderPass);
    });
    publicAPI.apply(renderPass, false);
  };

  publicAPI.queryPass = function (prepass, renderPass) {
    if (prepass) {
      if (!model.renderable || !model.renderable.getVisibility()) {
        return;
      }

      if (model.renderable.getIsOpaque()) {
        renderPass.incrementOpaqueActorCount();
      } else {
        renderPass.incrementTranslucentActorCount();
      }
    }
  };

  publicAPI.zBufferPass = function (prepass, renderPass) {
    return publicAPI.opaquePass(prepass, renderPass);
  };

  publicAPI.opaqueZBufferPass = function (prepass, renderPass) {
    return publicAPI.opaquePass(prepass, renderPass);
  }; // Renders myself


  publicAPI.opaquePass = function (prepass, renderPass) {
    if (prepass) {
      model.context.depthMask(true);
    }
  }; // Renders myself


  publicAPI.translucentPass = function (prepass, renderPass) {
    model.context.depthMask(!prepass);
  };

  publicAPI.getKeyMatrices = function () {
    // has the actor changed?
    if (model.renderable.getMTime() > model.keyMatrixTime.getMTime()) {
      mat4.copy(model.keyMatrices.mcwc, model.renderable.getMatrix());
      mat4.transpose(model.keyMatrices.mcwc, model.keyMatrices.mcwc);
      model.keyMatrixTime.modified();
    }

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


var DEFAULT_VALUES = {
  context: 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, {
    mtime: 0
  });
  model.keyMatrices = {
    mcwc: mat4.identity(new Float64Array(16))
  }; // Build VTK API

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

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

var newInstance = newInstance$1(extend, 'vtkOpenGLImageSlice'); // ----------------------------------------------------------------------------

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

registerOverride('vtkImageSlice', newInstance);

export { vtkImageSlice as default, extend, newInstance };