Java tutorial
/* * Copyright 2018 iserge. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.cleanlogic.cesiumjs4gwt.showcase.examples; import com.google.gwt.core.client.GWT; import com.google.gwt.event.logical.shared.ValueChangeEvent; import com.google.gwt.event.logical.shared.ValueChangeHandler; import com.google.gwt.user.client.ui.AbsolutePanel; import com.google.gwt.user.client.ui.CheckBox; import com.google.gwt.user.client.ui.FlexTable; import com.google.gwt.user.client.ui.HTML; import org.cesiumjs.cs.core.Cartesian3; import org.cesiumjs.cs.datasources.graphics.ModelGraphics; import org.cesiumjs.cs.datasources.graphics.options.ModelGraphicsOptions; import org.cesiumjs.cs.datasources.options.EntityOptions; import org.cesiumjs.cs.datasources.properties.ConstantPositionProperty; import org.cesiumjs.cs.datasources.properties.ConstantProperty; import org.cesiumjs.cs.scene.PostProcessStageComposite; import org.cesiumjs.cs.widgets.ViewerPanel; import org.cleanlogic.cesiumjs4gwt.showcase.basic.AbstractExample; import org.cleanlogic.cesiumjs4gwt.showcase.components.store.ShowcaseExampleStore; import org.cleanlogic.cesiumjs4gwt.showcase.examples.slider.Slider; import org.cleanlogic.cesiumjs4gwt.showcase.examples.slider.SliderEvent; import org.cleanlogic.cesiumjs4gwt.showcase.examples.slider.SliderListener; import javax.inject.Inject; /** * @author Serge Silaev aka iSergio <s.serge.b@gmail.com> */ public class Bloom extends AbstractExample { private ViewerPanel csVPanel; private CheckBox bloomCBox; private CheckBox glowOnlyCBox; private Slider contrastSlider; private Slider brightnessSlider; private Slider deltaSlider; private Slider sigmaSlider; private Slider stepSizeSlider; private int numberOfBalloons = 13; private double lonIncrement = 0.00025; private double initialLon = -122.99875; private double lat = 44.0503706; private double height = 100.0; @Inject public Bloom(ShowcaseExampleStore store) { super("Bloom", "Add bloom effect to the scene", new String[] { "Bloom", "Post processing" }, store); } @Override public void buildPanel() { csVPanel = new ViewerPanel(); for (int i = 0; i < numberOfBalloons; i++) { double lon = initialLon + i * lonIncrement; createModel(lon, lat, height); } bloomCBox = new CheckBox(); bloomCBox.setValue(true); bloomCBox.addValueChangeHandler(new MValueChangeHandler()); glowOnlyCBox = new CheckBox(); glowOnlyCBox.setValue(false); glowOnlyCBox.addValueChangeHandler(new MValueChangeHandler()); contrastSlider = new Slider("contrastSlider", -25500, 25500, 12800); contrastSlider.setStep(1); contrastSlider.setWidth("150px"); contrastSlider.addListener(new MSliderListener()); brightnessSlider = new Slider("brightnessSlider", -100, 100, -30); brightnessSlider.setStep(1); brightnessSlider.setWidth("150px"); brightnessSlider.addListener(new MSliderListener()); deltaSlider = new Slider("deltaSlider", 100, 500, 100); deltaSlider.setStep(1); deltaSlider.setWidth("150px"); deltaSlider.addListener(new MSliderListener()); sigmaSlider = new Slider("sigmaSlider", 100, 1000, 378); sigmaSlider.setStep(1); sigmaSlider.setWidth("150px"); sigmaSlider.addListener(new MSliderListener()); stepSizeSlider = new Slider("stepSizeSlider", 0, 700, 500); stepSizeSlider.setStep(1); stepSizeSlider.setWidth("150px"); stepSizeSlider.addListener(new MSliderListener()); FlexTable flexTable = new FlexTable(); flexTable.setHTML(1, 0, "<font color=\"white\">Bloom</font>"); flexTable.setWidget(1, 1, bloomCBox); flexTable.setHTML(2, 0, "<font color=\"white\">Glow only</font>"); flexTable.setWidget(2, 1, glowOnlyCBox); flexTable.setHTML(3, 0, "<font color=\"white\">Contrast</font>"); flexTable.setWidget(3, 1, contrastSlider); flexTable.setHTML(4, 0, "<font color=\"white\">Brightness</font>"); flexTable.setWidget(4, 1, brightnessSlider); flexTable.setHTML(5, 0, "<font color=\"white\">Delta</font>"); flexTable.setWidget(5, 1, deltaSlider); flexTable.setHTML(6, 0, "<font color=\"white\">Sigma</font>"); flexTable.setWidget(6, 1, sigmaSlider); flexTable.setHTML(7, 0, "<font color=\"white\">Step Size</font>"); flexTable.setWidget(7, 1, stepSizeSlider); AbsolutePanel aPanel = new AbsolutePanel(); aPanel.add(csVPanel); aPanel.add(flexTable, 20, 20); contentPanel.add(new HTML("<p>Post processing effects.</p>")); contentPanel.add(aPanel); initWidget(contentPanel); updatePostProcess(); Cartesian3 target = Cartesian3.fromDegrees(initialLon + lonIncrement, lat, height + 7.5); Cartesian3 offset = new Cartesian3(-37.048378684557974, -24.852967044804245, 4.352023653686047); csVPanel.getViewer().scene().camera().lookAt(target, offset); } private void createModel(double lon, double lat, double height) { Cartesian3 position = Cartesian3.fromDegrees(lon, lat, height); ModelGraphicsOptions modelGraphicsOptions = new ModelGraphicsOptions(); modelGraphicsOptions.uri = new ConstantProperty<>( GWT.getModuleBaseURL() + "SampleData/models/CesiumBalloon/CesiumBalloon.glb"); EntityOptions options = new EntityOptions(); options.name = GWT.getModuleBaseURL() + "SampleData/models/CesiumBalloon/CesiumBalloon.glb"; options.position = new ConstantPositionProperty(position); options.model = new ModelGraphics(modelGraphicsOptions); csVPanel.getViewer().entities().add(options); } private void updatePostProcess() { PostProcessStageComposite bloom = csVPanel.getViewer().scene().postProcessStages.bloom(); bloom.enabled = bloomCBox.getValue(); bloom.uniforms.setProperty("glowOnly", glowOnlyCBox.getValue()); bloom.uniforms.setProperty("contrast", contrastSlider.getValue() / 100.0); bloom.uniforms.setProperty("brightness", brightnessSlider.getValue() / 100.0); bloom.uniforms.setProperty("delta", deltaSlider.getValue() / 100.0); bloom.uniforms.setProperty("sigma", sigmaSlider.getValue() / 100.0); bloom.uniforms.setProperty("stepSize", stepSizeSlider.getValue() / 100.0); } @Override public String[] getSourceCodeURLs() { String[] sourceCodeURLs = new String[1]; sourceCodeURLs[0] = GWT.getModuleBaseURL() + "examples/" + "Bloom.txt"; return sourceCodeURLs; } private class MValueChangeHandler implements ValueChangeHandler<Boolean> { @Override public void onValueChange(ValueChangeEvent<Boolean> event) { updatePostProcess(); } } private class MSliderListener implements SliderListener { @Override public void onStart(SliderEvent e) { // } @Override public boolean onSlide(SliderEvent e) { updatePostProcess(); return true; } @Override public void onChange(SliderEvent e) { // } @Override public void onStop(SliderEvent e) { // } } }