Actor2D

Introduction

This class is not intended for general use. Please use the
similarly named class under Rendering/Core. This class is
a WebGL implementation of that generic renderable class in
Rendering Core. This class will automatically get instantiated
and rendered as needed by the OpenGLRenderWindow.

Source

index.js
import * as macro from '../../../macro';
import vtkViewNode from '../../SceneGraph/ViewNode';

// ----------------------------------------------------------------------------
// vtkOpenGLActor methods
// ----------------------------------------------------------------------------

function vtkOpenGLActor2D(publicAPI, model) {
// Set our className
model.classHierarchy.push('vtkOpenGLActor2D');

// Builds myself.
publicAPI.buildPass = (prepass) => {
if (prepass) {
if (!model.renderable) {
return;
}
model.openGLRenderer = publicAPI.getFirstAncestorOfType(
'vtkOpenGLRenderer'
);
publicAPI.prepareNodes();
publicAPI.addMissingNodes(model.renderable.getTextures());
publicAPI.addMissingNode(model.renderable.getMapper());
publicAPI.removeUnusedNodes();
}
};

// we draw textures, then mapper, then post pass textures
publicAPI.traverseOpaquePass = (renderPass) => {
if (
!model.renderable ||
!model.renderable.getVisibility() ||
!model.renderable.getIsOpaque() ||
(model.openGLRenderer.getSelector() && !model.renderable.getPickable())
) {
return;
}

publicAPI.apply(renderPass, true);
model.children.forEach((child) => {
if (!child.isA('vtkOpenGLTexture')) {
child.traverse(renderPass);
}
});
publicAPI.apply(renderPass, false);
};

// we draw textures, then mapper, then post pass textures
publicAPI.traverseTranslucentPass = (renderPass) => {
if (
!model.renderable ||
!model.renderable.getVisibility() ||
model.renderable.getIsOpaque() ||
(model.openGLRenderer.getSelector() && !model.renderable.getPickable())
) {
return;
}

publicAPI.apply(renderPass, true);
model.children.forEach((child) => {
if (!child.isA('vtkOpenGLTexture')) {
child.traverse(renderPass);
}
});
publicAPI.apply(renderPass, false);
};

publicAPI.activateTextures = () => {
// always traverse textures first, then mapper
model.activeTextures = [];
model.children.forEach((child) => {
if (child.isA('vtkOpenGLTexture')) {
child.render();
if (child.getHandle()) {
model.activeTextures.push(child);
}
}
});
};

// Renders myself
publicAPI.opaquePass = (prepass, renderPass) => {
if (prepass) {
model.context = publicAPI
.getFirstAncestorOfType('vtkOpenGLRenderWindow')
.getContext();
model.context.depthMask(true);
publicAPI.activateTextures();
} else {
// deactivate textures
model.activeTextures.forEach((child) => {
child.deactivate();
});
}
};

// Renders myself
publicAPI.translucentPass = (prepass, renderPass) => {
if (prepass) {
model.context = publicAPI
.getFirstAncestorOfType('vtkOpenGLRenderWindow')
.getContext();
model.context.depthMask(false);
publicAPI.activateTextures();
} else {
// deactivate textures
model.activeTextures.forEach((child) => {
child.deactivate();
});
model.context.depthMask(true);
}
};
}

// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------

const DEFAULT_VALUES = {
context: null,
activeTextures: [],
};

// ----------------------------------------------------------------------------

export function extend(publicAPI, model, initialValues = {}) {
Object.assign(model, DEFAULT_VALUES, initialValues);

// Inheritance
vtkViewNode.extend(publicAPI, model, initialValues);

// Build VTK API
macro.setGet(publicAPI, model, ['context']);

macro.get(publicAPI, model, ['activeTextures']);

// Object methods
vtkOpenGLActor2D(publicAPI, model);
}

// ----------------------------------------------------------------------------

export const newInstance = macro.newInstance(extend);

// ----------------------------------------------------------------------------

export default { newInstance, extend };