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package demos.nurbs.curveapp;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
/**
* Class reacting to mouse events (implements interface for button press, drag and movement)
* Třída zpracovávající události myši (implementuje rozhraní zpracovávající stisk tlačítek i pohyb a tažení myší)
* @author Tomáš Hráský
*
*/
public class CurveMouseListener implements MouseListener, MouseMotionListener {
/**
* Actually selected control point index
* Index aktuálně vybraného řídícího bodu
*/
private int bodIndex;
/**
* Window listener is connected to
* Okno k nemuž listener patří
*/
private CurveApp appWindow;
/**
* Action type
* Typ prováděné činnosti
*/
private String actionType;
/**
* Pixel tolerance when selecting control point by clicking
* Tolerance pro indikaci kliku na řídící bod
*/
private static final int TOLERANCE=10;
/**
* Creates new listener with connection to given app window
* Vytvoří listener s odkazem na zadané okno
* @param app rodičovské okno
*/
public CurveMouseListener(CurveApp app) {
this.appWindow=app;
}
/* (non-Javadoc)
* @see java.awt.event.MouseListener#mouseClicked(java.awt.event.MouseEvent)
*/
public void mouseClicked(MouseEvent e) {
if(actionType==CurveApp.PRIDAT_AC){
Curve.getInstance().setIsCurveFinished(false);
float x=e.getX();
float y=e.getY();
float z=0;
float w=1;
int size;
float[] newCtrls;
try{
size=Curve.getInstance().getCtrlPoints().length;
}catch (Exception ex) {
size=0;
}
newCtrls=new float[size+4];
System.arraycopy(Curve.getInstance().getCtrlPoints(),0,newCtrls,0,size);
newCtrls[size]=x;
newCtrls[size+1]=y;
newCtrls[size+2]=z;
newCtrls[size+3]=w;
Curve.getInstance().setCtrlPoints(newCtrls);
}else if(actionType==CurveApp.SMAZAT_AC&&bodIndex>=0){
Curve.getInstance().setIsCurveFinished(false);
int size=Curve.getInstance().getCtrlPoints().length;
float[] newCtrls=new float[size-4];
int firstPartSize=(bodIndex)*4;
int secondPartSize=newCtrls.length-firstPartSize;
System.arraycopy(Curve.getInstance().getCtrlPoints(),0,newCtrls,0,firstPartSize);
System.arraycopy(Curve.getInstance().getCtrlPoints(),firstPartSize+4,newCtrls,firstPartSize,secondPartSize);
bodIndex=-1;
Curve.getInstance().setBodIndex(bodIndex);
Curve.getInstance().setCtrlPoints(newCtrls);
}
appWindow.updateGLCanvas();
}
/* (non-Javadoc)
* @see java.awt.event.MouseListener#mousePressed(java.awt.event.MouseEvent)
*/
public void mousePressed(MouseEvent e) {
// if(actionType==MOVE_AC){
float[] ctrlpoints=Curve.getInstance().getCtrlPoints();
int x=e.getX();
int y=e.getY();
this.bodIndex=-1;
// System.out.println(ctrlpoints.length);
for(int i=0;i<ctrlpoints.length/4;i++){
float xS = ctrlpoints[i*4]/ctrlpoints[i*4+3];
float yS = ctrlpoints[i*4+1]/ctrlpoints[i*4+3];
if(x>=xS-TOLERANCE&&x<=xS+TOLERANCE&&y>=yS-TOLERANCE&&y<=yS+TOLERANCE){
this.bodIndex=i;
}
}
Curve.getInstance().setBodIndex(bodIndex);
// }
appWindow.updateGLCanvas();
}
/* (non-Javadoc)
* @see java.awt.event.MouseListener#mouseReleased(java.awt.event.MouseEvent)
*/
public void mouseReleased(MouseEvent e) {
// this.bodIndex=-1;
}
/* (non-Javadoc)
* @see java.awt.event.MouseListener#mouseEntered(java.awt.event.MouseEvent)
*/
public void mouseEntered(MouseEvent e) {
}
/* (non-Javadoc)
* @see java.awt.event.MouseListener#mouseExited(java.awt.event.MouseEvent)
*/
public void mouseExited(MouseEvent e) {
}
/* (non-Javadoc)
* @see java.awt.event.MouseMotionListener#mouseDragged(java.awt.event.MouseEvent)
*/
public void mouseDragged(MouseEvent e) {
if(this.bodIndex>=0){
int x=e.getX();
int y=e.getY();
Curve.getInstance().setActiveX(x);
Curve.getInstance().setActiveY(y);
}
appWindow.updateGLCanvas();
}
/* (non-Javadoc)
* @see java.awt.event.MouseMotionListener#mouseMoved(java.awt.event.MouseEvent)
*/
public void mouseMoved(MouseEvent e) {
}
/**
* Set action type
* Nastaví typ prováděné činnosti
* @param action Action type
*/
public void setActionType(String action) {
this.actionType=action;
}
/**
* Returns actually selected control point index
* Vrací index aktuálně vybraného řídícího bodu
* @return actually selected control point index
*/
public int getBodIndex() {
return bodIndex;
}
/**
* Sets actually selected control point index
* Nastavuje index aktuálně vybraného řídícího bodu
* @param bodIndex actually selected control point index
*/
public void setBodIndex(int bodIndex) {
this.bodIndex = bodIndex;
}
}
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