标签:processing multi-touch android
我是Processing的新手,我想在Android模式下运行我的草图.我希望它同时支持多个触摸.
我想知道是否有人可以指导我这个问题:
如何让草图支持多次触摸?
解决方法:
这是一个完整的例子:
/*
*
* androidMultiTouch.pde
* Shows the basic use of MultiTouch Events
*
*/
//-----------------------------------------------------------------------------------------
// IMPORTS
import android.view.MotionEvent;
//-----------------------------------------------------------------------------------------
// VARIABLES
int TouchEvents;
float xTouch[];
float yTouch[];
int currentPointerId = 0;
boolean printFPS;
//-----------------------------------------------------------------------------------------
void setup() {
size(displayWidth, displayHeight);
orientation(LANDSCAPE);
background(0, 255, 0);
fill(0, 0, 244);
rect(100, 100, 100, 100);
stroke(255);
// Initialize Multitouch x y arrays
xTouch = new float [10];
yTouch = new float [10]; // Don't use more than ten fingers!
}
//-----------------------------------------------------------------------------------------
void draw() {
background(255, 0, 0);
for (int i = 0; i < xTouch.length; i++) {
ellipse(xTouch[i], yTouch[i], 150, 150);
}
}
//-----------------------------------------------------------------------------------------
public boolean surfaceTouchEvent(MotionEvent event) {
// Number of places on the screen being touched:
TouchEvents = event.getPointerCount();
// If no action is happening, listen for new events else
for (int i = 0; i < TouchEvents; i++) {
int pointerId = event.getPointerId(i);
xTouch[pointerId] = event.getX(i);
yTouch[pointerId] = event.getY(i);
float siz = event.getSize(i);
}
// ACTION_DOWN
if (event.getActionMasked() == 0 ) {
print("Initial action detected. (ACTION_DOWN)");
print("Action index: " +str(event.getActionIndex()));
}
// ACTION_UP
else if (event.getActionMasked() == 1) {
print("ACTION_UP");
print("Action index: " +str(event.getActionIndex()));
}
// ACTION_POINTER_DOWN
else if (event.getActionMasked() == 5) {
print("Secondary pointer detected: ACTION_POINTER_DOWN");
print("Action index: " +str(event.getActionIndex()));
}
// ACTION_POINTER_UP
else if (event.getActionMasked() == 6) {
print("ACTION_POINTER_UP");
print("Action index: " +str(event.getActionIndex()));
}
//
else if (event.getActionMasked() == 4) {
}
// If you want the variables for motionX/motionY, mouseX/mouseY etc.
// to work properly, you'll need to call super.surfaceTouchEvent().
return super.surfaceTouchEvent(event);
}
标签:processing,multi-touch,android 来源: https://codeday.me/bug/20191007/1864067.html
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