我从Android OpenGL教程中获取了一些相同的代码,我想知道是否有可能实现这里看到的发光效果:
http://glslsandbox.com/e#25224.0
使用Square下面的实现?即不使用纹理?我想将这种发光效果应用到整个Squareie 填充
上面的链接使用了一个resolution变量,如果我试图对我的形状施加影响,我不确定是否需要这样做。我假设time不需要变量?
我在网上看到了许多用于产生发光效果的片段着色器示例,但其中大多数使用纹理。
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import java.nio.ShortBuffer;
import android.opengl.GLES20;
/**
* A two-dimensional square for use as a drawn object in OpenGL ES 2.0.
*/
public class Square {
private final String vertexShaderCode =
"uniform mat4 uMVPMatrix;" +
"attribute vec4 vPosition;" +
"void main() {" +
" gl_Position = uMVPMatrix * vPosition;" +
"}";
private final String fragmentShaderCode =
"precision mediump float;" …Run Code Online (Sandbox Code Playgroud) 有没有办法解决这个错误而不必在文件中放置一个忽略?
运行命令时出错:
./node_modules/tslint/bin/tslint -p src/tsconfig.json --type-check src/app/app.component.spec.ts
[21, 5]: unused expression, expected an assignment or function call
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测试:
let chai = require('chai');
let expect = chai.expect;
import { AppComponent } from './app.component';
import { ComponentFixture, TestBed } from '@angular/core/testing';
describe('AppComponent', function() {
let testAppComponent: AppComponent;
let fixture: ComponentFixture<AppComponent>;
beforeEach(() => {
TestBed.configureTestingModule({
declarations: [AppComponent]
});
fixture = TestBed.createComponent(AppComponent);
testAppComponent = fixture.componentInstance;
});
it('should create the correct component', () => {
expect(testAppComponent instanceof AppComponent).to.be.true;
});
});
Run Code Online (Sandbox Code Playgroud) 它非常基本的用户界面,但我无法设置JCheckBox按钮,以便它们紧接着(垂直)放置,没有任何间距.我如何减少下面的间距?
JPanel debugDrawPanel = new JPanel(new GridLayout(0,1));
JPanel eastPanel = new JPanel(new GridLayout(1,0));
JTabbedPane tab = new JTabbedPane();
click = new ClickPanel(this);
setSettings(new Settings());
for (Setting setting: getSettings().getAll()){
JCheckBox checkBox = new JCheckBox(setting.name);
checkBox.setName(setting.name);
checkBox.addItemListener(new CheckBoxItemListener(this));
debugDrawPanel.add(checkBox);
}
tab.addTab("Object Parameters", click);
tab.addTab("Debug Draw", debugDrawPanel);
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我正在使用vecmath库来帮助处理矩阵数学,而我正在转换opengl程序以glsl更好地利用它.
在写完问题之后我想我有3个小问题:
display()?即每一帧这就是我在我的函数中计算我projection和view矩阵的reshape方法GLEventListener..
Matrix4f mProjectionMatrix = createPerspectiveProjection(
60.0f, width / height, 0.1f, 100.0f);
Matrix4f mViewMatrix = new Matrix4f();
mViewMatrix.setIdentity();
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辅助功能..
private Matrix4f createPerspectiveProjection(float fov, float aspect, float zNear, float zFar){
Matrix4f mat = new Matrix4f();
float yScale = (float) (1 / (Math.tan(Math.toRadians(fov / 2))));
float xScale = yScale / aspect;
float frustrumLength = zFar - zNear;
mat.m00 = xScale;
mat.m11 = yScale;
mat.m22 …Run Code Online (Sandbox Code Playgroud) 我创建了一个RenderingPluginfor,用于在WebSphere Portal向客户端发送标记之前调用服务器端.插件循环遍历所有cookie,如果找不到'test',我想设置该cookie.
我知道这是可能的,HttpServletResponse但是RenderingPlugin没有访问该对象.它只有一个HttpServletRequest.
还有另一种方法吗?
public class Request implements com.ibm.workplace.wcm.api.plugin.RenderingPlugin {
@Override
public boolean render(RenderingPluginModel rpm) throws RenderingPluginException {
boolean found = false;
HttpServletRequest servletRequest = (HttpServletRequest) rpm.getRequest();
Cookie[] cookie = servletRequest.getCookies();
// loop through cookies
for (int i = 0; i < cookie.length; i++) {
// if test found
if (cookie[i].getName().equals("test")) {
found = true;
}
}
if (!found){
// set cookie here
}
}
}
Run Code Online (Sandbox Code Playgroud) 当logger.error被调用时,有很多不同的东西可以作为第三个参数传递。
如何验证e包含特定子字符串?
这是我的生产代码..
public class MyClass {
private ILogger logger = Slf4jLogbackLogger
.generateLogger(MyClass.class.getClassLoader().getResource("log_messages.properties"));
public void doSomething() {
logger.info(Optional.empty(), "MyClass.doSomething");
try {
.. do things // throw new RuntimeException("something");
} catch (Exception e) {
logger.error(Optional.empty(), "HANDLE_EXCEPTION", e);
}
}
}
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我的测试代码..
@RunWith(MockitoJUnitRunner.class)
public class TestMyClass {
@Mock
private ILogger logger;
@InjectMocks
@Spy
private MyClass myClass = new MyClass();
@Before
public void init() throws Exception {
MockitoAnnotations.initMocks(this);
}
@Test
public void testMyClass() throws Exception {
try {
myClass.doSomething(); …Run Code Online (Sandbox Code Playgroud) 如果没有,是否有比字符串连接更安全的方法?
试过这个..
final String CREATE_SCHEMA_SQL = "CREATE SCHEMA IF NOT EXISTS ?";
List<String> schemas = // ["001", "002", "003"];
for (String schema : schemas) {
try (Connection connection = dataSource.getConnection();
PreparedStatement createSchemaStatement =
connection.prepareStatement(CREATE_SCHEMA_SQL)) {
createSchemaStatement.setString(1, schema);
createSchemaStatement.executeUpdate();
} catch (SQLException e) {
throw new RuntimeException("Could not create tenant schema");
}
}
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产生这个错误:
org.postgresql.util.PSQLException: ERROR: syntax error at or near "$1"
Position: 29
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2674)
Run Code Online (Sandbox Code Playgroud) 我最近在 Linux 上经常使用 grep,但现在我需要使用 findstr 在 Windows 机器上执行相同的任务,但无法完全获得正确的语法。
我的 grep 命令如下所示:
grep "12/12/2011.\*followed by literal string" /myFile.txt
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因此,这会搜索指定的日期和文字字符串,但可以通过使用在两个搜索词之间包含任何其他字符的混合.\*
有人知道如何将此语句转换为 findstr 吗?谢谢
我有一个声明命名空间的js脚本,然后有一个run()我可以在XUL脚本中调用的方法,如myNamespace.run():
var myNamespace = {
run: function() {
var selectedText = getSelText();
alert (selectedText);
var getSelText = function() {
var focusedWindow = document.commandDispatcher.focusedWindow;
var selText = focusedWindow.getSelection();
return selText.toString();
}
}
}
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我希望能够getSelText()在myNamespace.run()不需要声明getSelText()为另一个顶级函数的情况下调用内部myNamespace.相反,它应该像内部的私有方法myNamespace.run().
当我运行此脚本时,我收到一个错误:
getSelText不是一个功能.
我是JavaScript的新手,所以我不知道设计它的最佳方法.是否有可能实现我的目标?我是以错误的方式来做这件事的吗?
感谢任何帮助!
是否可以在 vncserver:0已经启动:1而无需重新启动系统的情况下启动它?
系统详细信息:
Gnome 桌面管理器
[root@server ~]# uname -a
Linux server.com 2.6.32-358.11.1.el6.x86_64 #1 SMP Wed May 15 10:48:38 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux
Red Hat Enterprise Linux Server release 6.4 (Santiago)
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继续运行 :1
[root@server ~]# vncserver :1
A VNC server is already running as :1
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想:0改用但出现以下错误:
[root@server ~]# vncserver :0
WARNING: The first attempt to start Xvnc failed, possibly because the font
catalog is not properly configured. Attempting to determine an appropriate
font …Run Code Online (Sandbox Code Playgroud) java ×5
glsl ×2
linux ×2
angular ×1
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database ×1
findstr ×1
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