Add select feature to joints

src/ofxBaseJoint.cpp

@@ -14,6 +14,7 @@ ofxBaseJoint::~ofxBaseJoint()
 void ofxBaseJoint::mousePressed(int x, int y, int button)
 {
     if ( hitTest(ofVec2f(x, y)) ) {
+        selected = true;
         clickDistance = position - ofVec2f(x, y);
         startDrag();
     }
@@ -47,8 +48,10 @@ bool ofxBaseJoint::isDragged()
 
 void ofxBaseJoint::setDefaultColors()
 {
-    fillColor = ofColor(0,255,255);
-    strokeColor = ofColor(255,255,255);
+    fillColor = ofColor(0, 255, 255);
+    strokeColor = ofColor(255, 255, 255);
+    fillColorSelected = ofColor(255, 255, 0);
+    strokeColorSelected = ofColor(255, 0, 0);
 }
 
 void ofxBaseJoint::setDefaultProperties()

src/ofxBaseJoint.h

@@ -27,8 +27,10 @@ public:
 protected:
     ofColor fillColor;
     ofColor strokeColor;
+    ofColor fillColorSelected;
+    ofColor strokeColorSelected;
     float strokeWidth;
-    ofVec2f clickDistance;
+    ofVec2f clickDistance; // How far from the center of the joint the user has clicked?
     bool dragging;
     
 private:

src/ofxCircleJoint.cpp

@@ -17,10 +17,22 @@ void ofxCircleJoint::draw()
     
     ofPushStyle();
     ofFill();
-    ofSetColor(fillColor);
+    
+    if ( selected ) {
+        ofSetColor(fillColorSelected);
+    } else {
+        ofSetColor(fillColor);
+    }
+    
     ofCircle(position.x, position.y, radius);
     ofNoFill();
-    ofSetColor(strokeColor);
+    
+    if ( selected ) {
+        ofSetColor(strokeColorSelected);
+    } else {
+        ofSetColor(strokeColor);
+    }
+    
     ofSetLineWidth(strokeWidth);
     ofCircle(position.x, position.y, radius);
     ofPopStyle();

src/ofxSurfaceGui.cpp

@@ -57,10 +57,12 @@ void ofxSurfaceGui::mousePressed(int x, int y, int button)
     
     if (mode == PROJECTION_MAPPING) {
         for ( int i=0; i<projectionMappingJoints.size(); i++ ) {
+            projectionMappingJoints[i].selected = false;
             projectionMappingJoints[i].mousePressed(x, y, button);
         }
     } else if (mode == TEXTURE_MAPPING) {
         for ( int i=0; i<textureMappingJoints.size(); i++ ) {
+            textureMappingJoints[i].selected = false;
             textureMappingJoints[i].mousePressed(x, y, button);
         }
     }