Question

我想定义一个动画，该动画可以在特定时间段内在两种颜色之间改变mobject的颜色。

例如一个具有红色的对象，我想在2秒钟内在红色和黄色之间来回设置其颜色5次。

下面是我的代码（可以更改颜色，但间隔不是均匀的），只想确认这是否是正确的方法，谢谢！：

class ChangeColor(Animation):
    def interpolate_submobject(self, submobject, starting_sumobject, alpha):
        m = int(alpha * 10) % 2
        if m == 0:
            submobject.set_color(RED)
        else:
            submobject.set_color(YELLOW)

Answer 1

默认情况下，org.apache.nifi.processor.exception.ProcessException: java.sql.SQLException: Cannot create JDBC driver of class 'oracle.jdbc.driver.OracleDriver' for connect URL 'jdbc:oracle:thin@osi3454:1521/UTSOFTP' at org.apache.nifi.dbcp.DBCPConnectionPool.getConnection(DBCPConnectionPool.java:474) at org.apache.nifi.dbcp.DBCPService.getConnection(DBCPService.java:49) at sun.reflect.GeneratedMethodAccessor701.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.nifi.controller.service.StandardControllerServiceInvocationHandler.invoke(StandardControllerServiceInvocationHandler.java:87) at com.sun.proxy.$Proxy126.getConnection(Unknown Source) at org.apache.nifi.processors.standard.AbstractExecuteSQL.onTrigger(AbstractExecuteSQL.java:222) at org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27) at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1162) at org.apache.nifi.controller.tasks.ConnectableTask.invoke(ConnectableTask.java:209) at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:117) at org.apache.nifi.engine.FlowEngine$2.run(FlowEngine.java:110) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.sql.SQLException: Cannot create JDBC driver of class 'oracle.jdbc.driver.OracleDriver' for connect URL 'jdbc:oracle:thin@osi3454:1521/UTSOFTP' at org.apache.commons.dbcp2.BasicDataSource.createConnectionFactory(BasicDataSource.java:2224) at org.apache.commons.dbcp2.BasicDataSource.createDataSource(BasicDataSource.java:2104) at org.apache.commons.dbcp2.BasicDataSource.getConnection(BasicDataSource.java:1563) at org.apache.nifi.dbcp.DBCPConnectionPool.getConnection(DBCPConnectionPool.java:470) ... 19 common frames omitted Caused by: java.sql.SQLException: No suitable driver at org.apache.commons.dbcp2.BasicDataSource.createConnectionFactory(BasicDataSource.java:2216) ... 22 common frames omitted的增量为alpha，因此必须将其更改为smooth，以便正确显示。

linear

如何在两种颜色之间闪烁mobject

1 个答案: