All files / Sources/Rendering/WebGPU/Actor2D index.js

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import { mat4 } from 'gl-matrix';
 
import macro from 'vtk.js/Sources/macros';
import vtkProp from 'vtk.js/Sources/Rendering/Core/Prop';
import vtkViewNode from 'vtk.js/Sources/Rendering/SceneGraph/ViewNode';
 
import { registerOverride } from 'vtk.js/Sources/Rendering/WebGPU/ViewNodeFactory';
 
const { CoordinateSystem } = vtkProp;
 
// ----------------------------------------------------------------------------
// vtkWebGPUActor methods
// ----------------------------------------------------------------------------
 
function vtkWebGPUActor2D(publicAPI, model) {
  // Set our className
  model.classHierarchy.push('vtkWebGPUActor2D');
 
  // Builds myself.
  publicAPI.buildPass = (prepass) => {
    if (prepass) {
      model.WebGPURenderer =
        publicAPI.getFirstAncestorOfType('vtkWebGPURenderer');
      model.WebGPURenderWindow = model.WebGPURenderer.getFirstAncestorOfType(
        'vtkWebGPURenderWindow'
      );
      if (model.propID === undefined) {
        model.propID = model.WebGPURenderWindow.getUniquePropID();
      }
      publicAPI.prepareNodes();
      publicAPI.addMissingNode(model.renderable.getMapper());
      publicAPI.removeUnusedNodes();
    }
  };
 
  // we draw textures, then mapper, then post pass textures
  publicAPI.traverseOpaquePass = (renderPass) => {
    if (
      !model.renderable ||
      !model.renderable.getNestedVisibility() ||
      !model.renderable.getIsOpaque() ||
      (model.WebGPURenderer.getSelector() &&
        !model.renderable.getNestedPickable())
    ) {
      return;
    }
 
    publicAPI.apply(renderPass, true);
 
    if (model.children[0]) {
      model.children[0].traverse(renderPass);
    }
 
    publicAPI.apply(renderPass, false);
  };
 
  // we draw textures, then mapper, then post pass textures
  publicAPI.traverseTranslucentPass = (renderPass) => {
    if (
      !model.renderable ||
      !model.renderable.getNestedVisibility() ||
      model.renderable.getIsOpaque() ||
      (model.WebGPURenderer.getSelector() &&
        !model.renderable.getNestedPickable())
    ) {
      return;
    }
 
    publicAPI.apply(renderPass, true);
 
    if (model.children[0]) {
      model.children[0].traverse(renderPass);
    }
 
    publicAPI.apply(renderPass, false);
  };
 
  publicAPI.queryPass = (prepass, renderPass) => {
    if (prepass) {
      if (!model.renderable || !model.renderable.getVisibility()) {
        return;
      }
      if (model.renderable.getIsOpaque()) {
        renderPass.incrementOpaqueActorCount();
      } else {
        renderPass.incrementTranslucentActorCount();
      }
    }
  };
 
  publicAPI.getBufferShift = (wgpuRen) => {
    publicAPI.getKeyMatrices(wgpuRen);
    return model.bufferShift;
  };
 
  publicAPI.getKeyMatrices = (wgpuRen) => {
    // has the actor or stabilization center changed?
    if (
      Math.max(model.renderable.getMTime(), wgpuRen.getStabilizedTime()) >
      model.keyMatricesTime.getMTime()
    ) {
      // compute the net shift, only apply stabilized coords with world coordinates
      model.bufferShift[0] = 0.0;
      model.bufferShift[1] = 0.0;
      model.bufferShift[2] = 0.0;
      const center = wgpuRen.getStabilizedCenterByReference();
      if (model.renderable.getCoordinateSystem() === CoordinateSystem.WORLD) {
        model.bufferShift[0] -= center[0];
        model.bufferShift[1] -= center[1];
        model.bufferShift[2] -= center[2];
      }
 
      mat4.identity(model.keyMatrices.bcwc);
      mat4.identity(model.keyMatrices.normalMatrix);
 
      // only meed the buffer shift to get to world
      mat4.translate(model.keyMatrices.bcwc, model.keyMatrices.bcwc, [
        -model.bufferShift[0],
        -model.bufferShift[1],
        -model.bufferShift[2],
      ]);
 
      // to get to stabilized we also need the center
      if (model.renderable.getCoordinateSystem() === CoordinateSystem.WORLD) {
        mat4.translate(model.keyMatrices.bcsc, model.keyMatrices.bcwc, [
          -center[0],
          -center[1],
          -center[2],
        ]);
      } else {
        mat4.copy(model.keyMatrices.bcsc, model.keyMatrices.bcwc);
      }
      model.keyMatricesTime.modified();
    }
 
    return model.keyMatrices;
  };
}
 
// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------
 
const DEFAULT_VALUES = {
  keyMatricesTime: null,
  keyMatrices: null,
  propID: undefined,
  bufferShift: undefined,
};
 
// ----------------------------------------------------------------------------
 
export function extend(publicAPI, model, initialValues = {}) {
  Object.assign(model, DEFAULT_VALUES, initialValues);
 
  // Inheritance
  vtkViewNode.extend(publicAPI, model, initialValues);
 
  model.keyMatricesTime = {};
  macro.obj(model.keyMatricesTime, { mtime: 0 });
  model.keyMatrices = {
    normalMatrix: new Float64Array(16),
    bcwc: new Float64Array(16),
    bcsc: new Float64Array(16),
  };
 
  macro.get(publicAPI, model, ['propID', 'keyMatricesTime']);
 
  model.bufferShift = [0, 0, 0, 0];
 
  // Object methods
  vtkWebGPUActor2D(publicAPI, model);
}
 
// ----------------------------------------------------------------------------
 
export const newInstance = macro.newInstance(extend);
 
// ----------------------------------------------------------------------------
 
export default { newInstance, extend };
 
// Register ourself to WebGPU backend if imported
registerOverride('vtkActor2D', newInstance);