From 31a9010253e555091992515c09760ff4118a224b Mon Sep 17 00:00:00 2001
From: Tim Redfern <tim@getdrop.com>
Date: Thu, 31 May 2018 18:49:38 +0100
Subject: add audioplotter source

---
 gui/src/AudioPlotter.cpp | 86 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 gui/src/AudioPlotter.cpp

(limited to 'gui/src/AudioPlotter.cpp')

diff --git a/gui/src/AudioPlotter.cpp b/gui/src/AudioPlotter.cpp
new file mode 100644
index 0000000..dba6765
--- /dev/null
+++ b/gui/src/AudioPlotter.cpp
@@ -0,0 +1,86 @@
+#include "Audioplotter.h"
+
+colourPolyline Audioplotter::compute_chaos(colourPolyline& poly,float colourFade){
+    colourPolyline tempPoly;
+    for (int i=0;i<poly.size();i++){
+            REAL iv[6]={poly[i].x,poly[i].y,chaos_a,chaos_b,chaos_k,chaos_p};
+            //ofLog() << i<<": calculating chaos with: "<<poly[i].x<<" "<<poly[i].y<<" "<<attractor.a<<" "<<attractor.b<<" "<<attractor.k<<" "<<attractor.p;
+            attractor.set(iv);
+            attractor.calc();
+            //ofLog() << i<<": got points: "<<attractor.nx<<" "<<attractor.ny;
+            tempPoly.addVertex(ofPoint(attractor.nx,attractor.ny),poly.getColourAt(i)*colourFade);
+    }
+    return tempPoly;
+}
+vector <colourPolyline> Audioplotter::output(float scale,float decay){
+
+        ofMatrix4x4 x = ofMatrix4x4::newIdentityMatrix();
+        x.translate((-ofGetWidth()/2)+((ofVec2f)translate).x,(-ofGetHeight()/2)+((ofVec2f)translate).y,0);
+        x.rotate(rotate,0,0,1);
+        //x.scale(((ofVec2f)scale).x,((ofVec2f)scale).y,1.0f);
+        x.translate((ofGetWidth()/2),(ofGetHeight()/2),0);
+    //destructive or non?
+            float fadefactor=decay<0.0f?1.0f-(1.0f/history_size):decay;
+
+            vector <colourPolyline> outdata;
+
+            for (int i=0;i<data.size();i++){
+                    vector <colourPolyline> newdata;
+                    for (int j=0;j<data[i].size();j++){
+                            colourPolyline line=lineTransformer::polyLineTransform(x,data[i][j]); //,fadefactor);
+                            line.setColour((line.getColourAt(0)*fadefactor)+(((ofColor)endColour)*(1.0f-fadefactor)));
+                            
+                            if (usechaos) {
+                                    colourPolyline chaosline=compute_chaos(line); //,fadefactor);
+                                    line.mix(chaosline,chaosamount);
+                            }
+
+                            
+                            //ofLog() << "set colour to "<<col;
+                            newdata.push_back(line);
+                            outdata.push_back(line);
+                    }
+                    data[i]=newdata;
+            }
+            return outdata;
+}
+void Audioplotter::addpoints(vector <float> &audio){
+    int num=min((int)num_points,(int)audio.size());
+    float step=((float)audio.size())/(num+1);
+    vector <colourPolyline> newdata;
+    if (joined){
+            colourPolyline line;
+            if (bars){
+                    for (int i=0;i<num-1;i++){
+                            line.addVertex(((step*(i+1))*ofGetWidth())/audio.size(),(0.5f+audio[step*(i+1)])*ofGetHeight(),startColour);
+                            line.addVertex(((step*(i+2))*ofGetWidth())/audio.size(),(0.5f+audio[step*(i+1)])*ofGetHeight(),startColour);
+                            line.addVertex(((step*(i+2))*ofGetWidth())/audio.size(),(0.5f+audio[step*(i+2)])*ofGetHeight(),startColour);
+                    } 
+            }
+            else {
+                    for (int i=0;i<num;i++){
+                            line.addVertex(((step*(i+1))*ofGetWidth())/audio.size(),(0.5f+audio[step*(i+1)])*ofGetHeight(),startColour);
+                    }   
+            }       
+            newdata.push_back(line);
+    }
+    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);
+            }
+    }
+    data.insert(data.begin(),newdata);
+    while (data.size()>history_size) {
+        data.pop_back();
+    }
+}
+int Audioplotter::numpoints(){
+    int num=0;
+    for (auto d=data.begin();d!=data.end();d++){
+            num+=d->size();
+    }
+    return num;
+}
\ No newline at end of file
-- 
cgit v1.2.3