redraw()

本参考资料用于Processing 3.0+。 如果你使用的是前一版本,请在使用软件帮助菜单内的参考资料。. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Core Javadoc and Libraries Javadoc.

名称

redraw()

示例
float x = 0;



void setup()
{  
size(200, 200);


noLoop();


  } 
void draw()
{  
background(204);


line(x, 0, x, height);

  } 
void mousePressed()
{  
x += 1;

 
redraw();


  } 
描述 Executes the code within draw() one time. This functions allows the program to update the display window only when necessary, for example when an event registered by mousePressed() or keyPressed() occurs.

In structuring a program, it only makes sense to call redraw() within events such as mousePressed(). This is because redraw() does not run draw() immediately (it only sets a flag that indicates an update is needed).

The redraw() function does not work properly when called inside draw(). To enable/disable animations, use loop() and noLoop().

语法
redraw()
返回值 void
相关 draw()
loop()
noLoop()
frameRate()

Updated on October 2, 2018 05:02:05pm EDT

redraw()