random sampling

1 files changed, 11 insertions, 4 deletions

diff --git a/gui/src/AudioPlotter.cpp b/gui/src/AudioPlotter.cpp
index ba78f1e..ec53bf4 100644
--- a/gui/src/AudioPlotter.cpp
+++ b/gui/src/AudioPlotter.cpp
@@ -68,10 +68,17 @@ void Audioplotter::addpoints(vector <float> &audio){
     }
     else{
             for (int i=0;i<num;i++){
-                    colourPolyline line;
-                    line.addVertex(((step*(i+1))*ofGetWidth())/audio.size(),(0.5f+audio[step*(i+1)])*ofGetHeight(),startColour);
-                    line.addVertex(((step*(i+1))*ofGetWidth())/audio.size()+width,(0.5f+audio[step*(i+1)])*ofGetHeight(),startColour);
-                    newdata.push_back(line);
+                colourPolyline line;
+                if (random){
+                    float in=ofRandom(0.0f,audio.size());
+                    line.addVertex(((in*ofGetWidth())/audio.size())-(width/2),(0.5f+audio[in])*ofGetHeight(),startColour);
+                    line.addVertex(((in*ofGetWidth())/audio.size())+(width/2),(0.5f+audio[in])*ofGetHeight(),startColour);
+                }
+                else {
+                    line.addVertex(((step*(i+1))*ofGetWidth())/audio.size()-(width/2),(0.5f+audio[step*(i+1)])*ofGetHeight(),startColour);
+                    line.addVertex(((step*(i+1))*ofGetWidth())/audio.size()+(width/2),(0.5f+audio[step*(i+1)])*ofGetHeight(),startColour);
+                }   
+                newdata.push_back(line);
             }
     }
     data.insert(data.begin(),newdata);