some slight changes to previous code

Lux/src/lightDrawing.cpp

@@ -68,19 +68,17 @@ void lightDrawing::draw() {
 
 
 
-
-
-
-
-
-void lightDrawing::clearAllLines() {
-    drawLine.clear();
+void lightDrawing::clearPreviousLine() {
+    // only allows you to delete the last added element
+    if (drawLine.size() > 0) { // you need this condition or the program will crash
+        drawLine.pop_back();
+    }
 }
 
 
 
 void lightDrawing::mouseDragged(ofVec3f _pos) {
-        drawLine[drawLine.size() - 1].addVertex(_pos);
+    drawLine[drawLine.size() - 1].addVertex(_pos);
 }
 
 
@@ -91,13 +89,10 @@ void lightDrawing::mouseRPressed() {
 
 
 void lightDrawing::mousePressed(ofVec3f _pos) {
-    //    drawLine.push_back(ofPolyline());
-    
     rightMouseButtonPressed = true;
     currentPolyline.curveTo(_pos.x,_pos.y,_pos.z);
     currentPolyline.curveTo(_pos.x,_pos.y,_pos.z);
     lastPoint.set(_pos.x,_pos.y,_pos.z);
-    
 }
 
 

Lux/src/lightDrawing.h

@@ -21,7 +21,7 @@ public:
     
     void setup();
     void draw();
-    void clearAllLines();
+    void clearPreviousLine();
     void mouseDragged(ofVec3f _pos);
     void mouseRPressed();
     
@@ -36,15 +36,12 @@ public:
     void mousePressed(ofVec3f _pos);
     void mouseReleased(ofVec3f _pos);
     
-    
-    
     vector <ofSpherePrimitive> storeSphere;
     ofSpherePrimitive sphere;
     void bubblesetup();
     void bubbledraw();
     void createbubble(ofVec3f _pos);
     
-    
 };