Add surface gui for the only surface we have here

example/src/ofApp.cpp

@@ -8,6 +8,8 @@ void ofApp::setup()
     
     // Create a triangle surface
     //triangleSurface.setup( ofVec2f(30,40), ofVec2f(500,500), ofVec2f(0,600), ofVec2f(0,0), ofVec2f(1,1), ofVec2f(0,1), &image.getTextureReference() );
+    
+    gui.setup(triangleSurface);
 }
 
 void ofApp::update()

example/src/ofApp.h

@@ -4,7 +4,7 @@
 #include "ofMain.h"
 #include "ofxPiMapper.h"
 
-#include "ofxCircleJoint.h"
+#include "ofxSurfaceGui.h"
 
 class ofApp : public ofBaseApp
 {
@@ -21,7 +21,7 @@ public:
     ofxTriangleSurface triangleSurface;
     ofImage image;
     
-    ofxCircleJoint joint;
+    ofxSurfaceGui gui;
 };
 
 #endif

src/ofxSurfaceGui.cpp

@@ -0,0 +1,30 @@
+#include "ofxSurfaceGui.h"
+
+ofxSurfaceGui::ofxSurfaceGui()
+{
+    jointCounter = 0;
+}
+
+ofxSurfaceGui::~ofxSurfaceGui()
+{
+    
+}
+
+void ofxSurfaceGui::setup(ofxTriangleSurface& surfaceForGui)
+{
+    surface = &surfaceForGui;
+    addNumJoints(3);
+}
+
+void ofxSurfaceGui::addJoint()
+{
+    jointCounter++;
+}
+
+void ofxSurfaceGui::addNumJoints(int num)
+{
+    for ( int i=0; i<num; i++ ) {
+        addJoint();
+        joints[i].position = surface->getVertex(i);
+    }
+}

src/ofxSurfaceGui.h

@@ -0,0 +1,25 @@
+#ifndef H_OFX_SURFACE_GUI
+#define H_OFX_SURFACE_GUI
+
+#include "ofMain.h"
+#include "ofxTriangleSurface.h"
+#include "ofxCircleJoint.h"
+
+class ofxSurfaceGui
+{
+public:
+    ofxSurfaceGui();
+    ~ofxSurfaceGui();
+    
+    void setup(ofxTriangleSurface& surfaceForGui);
+    
+private:
+    ofxTriangleSurface* surface;
+    ofxCircleJoint joints[100];
+    int jointCounter;
+    
+    void addJoint();
+    void addNumJoints(int num);
+};
+
+#endif

src/ofxTriangleSurface.cpp

@@ -70,4 +70,15 @@ void ofxTriangleSurface::setTexCoord(int index, ofVec2f t)
     }
     
     mesh.setTexCoord(index, t);
+}
+
+ofVec2f ofxTriangleSurface::getVertex(int index)
+{
+    if ( index > 2 ) {
+        ofLog() << "Vertex with this index does not exist: " << index << endl;
+        throw std::runtime_error("Index out of bounds.");
+    }
+    
+    ofVec3f vert = mesh.getVertex(index);
+    return ofVec2f(vert.x, vert.y);
 }

src/ofxTriangleSurface.h

@@ -15,6 +15,7 @@ public:
     void draw();
     void setVertex( int index, ofVec2f p );
     void setTexCoord( int index, ofVec2f t );
+    ofVec2f getVertex(int index);
 };
 
 #endif