From 59cecd0385f90e25ce6c73782d5b01bba5bc5f7c Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Mon, 30 Jul 2018 15:26:47 +0200
Subject: fft nun fensterbar

---
 ROM.lpr     |  30 ++++++++++++---
 ROM.lps     | 122 +++++++++++++++++++++++++++++++-----------------------------
 romunit.pas |  44 ++++++++++++++++++++++
 3 files changed, 131 insertions(+), 65 deletions(-)

diff --git a/ROM.lpr b/ROM.lpr
index 30901d5..034fb35 100644
--- a/ROM.lpr
+++ b/ROM.lpr
@@ -16,7 +16,7 @@ var
   inPulsO,inPuls,refPulsO,refPuls,surTraj,cRefPuls,
     surVel,inPulsArg,refPulsArg,surTrajArg,surVelArg:    tExtPointArray;
   smooth,betaSmooth,veloSmooth:                          longint;
-  tmax,wmax,absShift,betaBound,veloBound:                extended;
+  tmax,wmax,absShift,betaBound,veloBound,fftBreite:      extended;
   force,fourier,mitAmplMod:                              boolean;
   f:                                                     textfile;
   s,t,u,lpicIn,rohIn,rohRef,outIn,
@@ -37,6 +37,7 @@ begin
   absShift:=-1e9;
   betaBound:=0.95;
   fourier:=false;
+  fftBreite:=-1;
   mitAmplMod:=true;
   veloSmooth:=1;
   veloBound:=1;
@@ -147,6 +148,11 @@ begin
       fourier:=true;
       continue;
     end;
+    if pos('FFT-Breite:',s)=1 then begin
+      delete(s,1,pos(':',s));
+      fftBreite:=strToFloat(trim(s));
+      continue;
+    end;
     if s='ohne FFT' then begin
       fourier:=false;
       continue;
@@ -273,10 +279,18 @@ begin
     if outVel<>'' then
       interpoliere(surVel);
     writeln(stderr,' fertig');
+    if fftBreite>0 then begin
+      fenstern(inPuls,fftBreite);
+      fenstern(refPuls,fftBreite);
+      fenstern(surTraj,fftBreite);
+      if outVel<>'' then
+        fenstern(surVel,fftBreite,true);
+    end;
     fft(inPuls,inPulsArg);
     fft(refPuls,refPulsArg);
     fft(surTraj,surTrajArg);
-    fft(surVel,surVelArg);
+    if outVel<>'' then
+      fft(surVel,surVelArg);
     inPuls[0]['y']:=0;
     refPuls[0]['y']:=0;
     surTraj[0]['y']:=0;
@@ -287,8 +301,10 @@ begin
       cut(inPulsArg,surTraj[length(surTraj)-1]['x']);
       cut(refPuls,surTraj[length(surTraj)-1]['x']);
       cut(refPulsArg,surTraj[length(surTraj)-1]['x']);
-      cut(surVel,surTraj[length(surTraj)-1]['x']);
-      cut(surVelArg,surTraj[length(surTraj)-1]['x']);
+      if outVel<>'' then begin
+        cut(surVel,surTraj[length(surTraj)-1]['x']);
+        cut(surVelArg,surTraj[length(surTraj)-1]['x']);
+      end;
     end
     else begin
       cut(surTraj,wmax);
@@ -297,8 +313,10 @@ begin
       cut(inPulsArg,wmax);
       cut(refPuls,wmax);
       cut(refPulsArg,wmax);
-      cut(surVel,wmax);
-      cut(surVelArg,wmax);
+      if outVel<>'' then begin
+        cut(surVel,wmax);
+        cut(surVelArg,wmax);
+      end;
     end;
     write(stderr,'alles normieren ...');
     normiere(inPuls);
diff --git a/ROM.lps b/ROM.lps
index 8c82481..90b1a22 100644
--- a/ROM.lps
+++ b/ROM.lps
@@ -7,9 +7,9 @@
       <Unit0>
         <Filename Value="ROM.lpr"/>
         <IsPartOfProject Value="True"/>
-        <TopLine Value="246"/>
-        <CursorPos X="54" Y="258"/>
-        <UsageCount Value="103"/>
+        <TopLine Value="287"/>
+        <CursorPos X="11" Y="319"/>
+        <UsageCount Value="106"/>
         <Loaded Value="True"/>
       </Unit0>
       <Unit1>
@@ -17,10 +17,10 @@
         <IsPartOfProject Value="True"/>
         <IsVisibleTab Value="True"/>
         <EditorIndex Value="1"/>
-        <TopLine Value="865"/>
-        <CursorPos X="3" Y="888"/>
-        <FoldState Value=" T3iE040528"/>
-        <UsageCount Value="103"/>
+        <TopLine Value="1066"/>
+        <CursorPos X="3" Y="1095"/>
+        <FoldState Value=" T3iF04052F"/>
+        <UsageCount Value="106"/>
         <Loaded Value="True"/>
       </Unit1>
       <Unit2>
@@ -28,7 +28,7 @@
         <IsPartOfProject Value="True"/>
         <EditorIndex Value="-1"/>
         <CursorPos Y="10"/>
-        <UsageCount Value="102"/>
+        <UsageCount Value="105"/>
       </Unit2>
       <Unit3>
         <Filename Value="../units/matheunit.pas"/>
@@ -40,131 +40,135 @@
       <Unit4>
         <Filename Value="../Make/tools.pas"/>
         <EditorIndex Value="-1"/>
-        <UsageCount Value="10"/>
+        <UsageCount Value="9"/>
       </Unit4>
       <Unit5>
         <Filename Value="../units/systemunit.pas"/>
         <EditorIndex Value="2"/>
         <CursorPos Y="16"/>
-        <UsageCount Value="13"/>
+        <UsageCount Value="15"/>
         <Loaded Value="True"/>
       </Unit5>
     </Units>
-    <JumpHistory Count="29" HistoryIndex="28">
+    <JumpHistory Count="30" HistoryIndex="29">
       <Position1>
         <Filename Value="romunit.pas"/>
-        <Caret Line="31" Column="14" TopLine="2"/>
+        <Caret Line="966" Column="30" TopLine="953"/>
       </Position1>
       <Position2>
-        <Filename Value="ROM.lpr"/>
-        <Caret Line="29" Column="60" TopLine="18"/>
+        <Filename Value="romunit.pas"/>
+        <Caret Line="1045" Column="48" TopLine="988"/>
       </Position2>
       <Position3>
         <Filename Value="romunit.pas"/>
-        <Caret Line="294" Column="12" TopLine="277"/>
       </Position3>
       <Position4>
         <Filename Value="romunit.pas"/>
-        <Caret Line="31" Column="14" TopLine="13"/>
+        <Caret Line="45" Column="20" TopLine="31"/>
       </Position4>
       <Position5>
-        <Filename Value="ROM.lpr"/>
-        <Caret Line="29" Column="28" TopLine="252"/>
+        <Filename Value="romunit.pas"/>
+        <Caret Line="316" Column="42" TopLine="329"/>
       </Position5>
       <Position6>
-        <Filename Value="romunit.pas"/>
-        <Caret Line="15" Column="30"/>
+        <Filename Value="ROM.lpr"/>
+        <Caret Line="183" Column="98" TopLine="168"/>
       </Position6>
       <Position7>
-        <Filename Value="romunit.pas"/>
-        <Caret Line="378" Column="19" TopLine="369"/>
+        <Filename Value="ROM.lpr"/>
       </Position7>
       <Position8>
-        <Filename Value="romunit.pas"/>
-        <Caret Line="45" Column="20" TopLine="27"/>
+        <Filename Value="ROM.lpr"/>
+        <Caret Line="18" Column="9"/>
       </Position8>
       <Position9>
-        <Filename Value="romunit.pas"/>
-        <Caret Line="316" Column="42" TopLine="287"/>
+        <Filename Value="ROM.lpr"/>
+        <Caret Line="26" Column="19"/>
       </Position9>
       <Position10>
-        <Filename Value="romunit.pas"/>
-        <Caret Line="378" Column="28" TopLine="350"/>
+        <Filename Value="ROM.lpr"/>
+        <Caret Line="33" Column="9" TopLine="4"/>
       </Position10>
       <Position11>
-        <Filename Value="romunit.pas"/>
-        <Caret Line="964" Column="21" TopLine="953"/>
+        <Filename Value="ROM.lpr"/>
+        <Caret Line="93" Column="13" TopLine="64"/>
       </Position11>
       <Position12>
-        <Filename Value="romunit.pas"/>
-        <Caret Line="966" Column="30" TopLine="953"/>
+        <Filename Value="ROM.lpr"/>
+        <Caret Line="256" Column="21" TopLine="234"/>
       </Position12>
       <Position13>
         <Filename Value="romunit.pas"/>
-        <Caret Line="1045" Column="48" TopLine="988"/>
+        <Caret Line="23" Column="29" TopLine="5"/>
       </Position13>
       <Position14>
-        <Filename Value="romunit.pas"/>
+        <Filename Value="ROM.lpr"/>
+        <Caret Line="258" Column="14" TopLine="234"/>
       </Position14>
       <Position15>
         <Filename Value="romunit.pas"/>
-        <Caret Line="45" Column="20" TopLine="31"/>
+        <Caret Line="15" Column="30"/>
       </Position15>
       <Position16>
-        <Filename Value="romunit.pas"/>
-        <Caret Line="316" Column="42" TopLine="329"/>
+        <Filename Value="ROM.lpr"/>
+        <Caret Line="258" Column="14" TopLine="264"/>
       </Position16>
       <Position17>
-        <Filename Value="ROM.lpr"/>
-        <Caret Line="183" Column="98" TopLine="168"/>
+        <Filename Value="romunit.pas"/>
+        <Caret Line="32" Column="23" TopLine="14"/>
       </Position17>
       <Position18>
-        <Filename Value="ROM.lpr"/>
+        <Filename Value="romunit.pas"/>
+        <Caret Line="876" Column="31"/>
       </Position18>
       <Position19>
-        <Filename Value="ROM.lpr"/>
-        <Caret Line="18" Column="9"/>
+        <Filename Value="romunit.pas"/>
+        <Caret Line="888" TopLine="865"/>
       </Position19>
       <Position20>
-        <Filename Value="ROM.lpr"/>
-        <Caret Line="26" Column="19"/>
+        <Filename Value="romunit.pas"/>
+        <Caret Line="36"/>
       </Position20>
       <Position21>
-        <Filename Value="ROM.lpr"/>
-        <Caret Line="33" Column="9" TopLine="4"/>
+        <Filename Value="romunit.pas"/>
+        <Caret Line="1063" Column="40" TopLine="1041"/>
       </Position21>
       <Position22>
-        <Filename Value="ROM.lpr"/>
-        <Caret Line="93" Column="13" TopLine="64"/>
+        <Filename Value="romunit.pas"/>
+        <Caret Line="1062" Column="26" TopLine="1041"/>
       </Position22>
       <Position23>
-        <Filename Value="ROM.lpr"/>
-        <Caret Line="256" Column="21" TopLine="234"/>
+        <Filename Value="romunit.pas"/>
+        <Caret Line="1068" Column="72" TopLine="1042"/>
       </Position23>
       <Position24>
-        <Filename Value="romunit.pas"/>
-        <Caret Line="23" Column="29" TopLine="5"/>
+        <Filename Value="ROM.lpr"/>
+        <Caret Line="286" Column="22" TopLine="139"/>
       </Position24>
       <Position25>
         <Filename Value="ROM.lpr"/>
-        <Caret Line="258" Column="14" TopLine="234"/>
+        <Caret Line="280" Column="25" TopLine="254"/>
       </Position25>
       <Position26>
-        <Filename Value="romunit.pas"/>
-        <Caret Line="15" Column="30"/>
+        <Filename Value="ROM.lpr"/>
+        <Caret Line="17" Column="11"/>
       </Position26>
       <Position27>
         <Filename Value="ROM.lpr"/>
-        <Caret Line="258" Column="14" TopLine="264"/>
+        <Caret Line="271" Column="26" TopLine="257"/>
       </Position27>
       <Position28>
         <Filename Value="romunit.pas"/>
-        <Caret Line="32" Column="23" TopLine="14"/>
+        <Caret Line="26" Column="19" TopLine="8"/>
       </Position28>
       <Position29>
-        <Filename Value="romunit.pas"/>
-        <Caret Line="876" Column="31"/>
+        <Filename Value="ROM.lpr"/>
+        <Caret Line="286" Column="37" TopLine="257"/>
       </Position29>
+      <Position30>
+        <Filename Value="romunit.pas"/>
+        <Caret Line="35" Column="61" TopLine="17"/>
+      </Position30>
     </JumpHistory>
   </ProjectSession>
 </CONFIG>
diff --git a/romunit.pas b/romunit.pas
index 41fa0c3..28e0df5 100644
--- a/romunit.pas
+++ b/romunit.pas
@@ -32,6 +32,7 @@ procedure fft(var dat: tExtPointArray; out datArg: tExtPointArray);
 procedure interpoliere(var dat: tExtPointArray);
 procedure normiere(var dat: tExtPointArray);
 procedure berechneRefPuls(inPuls,surTraj: tExtPointArray; betaGlaette: longint; betaBound: extended; out cRefPuls: tExtPointArray);
+procedure fenstern(var dat: tExtPointArray; breite: extended; alteMitte: boolean = false);
 
 type
   tSortThread = class(tThread)
@@ -1055,5 +1056,48 @@ begin
   fertig:=true;
 end;
 
+var
+  fensterMitte: longint;
+
+procedure fenstern(var dat: tExtPointArray; breite: extended; alteMitte: boolean = false);
+var
+  i,j,len: longint;
+  extrema: tLongintArray;
+  pp,mpp:  extended;
+begin
+  if not alteMitte then begin
+    setlength(extrema,0);
+    len:=0;
+    for i:=1 to length(dat)-2 do
+      if (dat[i]['y']>dat[i-1]['y']) xor
+         (dat[i+1]['y']>dat[i]['y']) then begin
+        if length(extrema)<=len then
+          setlength(extrema,len+65536);
+        extrema[len]:=i;
+        inc(len);
+      end;
+    setlength(extrema,len);
+    fensterMitte:=-1;
+    mpp:=-1;
+    for i:=0 to length(extrema)-1 do begin
+      pp:=-1;
+      for j:=0 to length(extrema)-1 do
+        if (abs(dat[extrema[j]]['x']-dat[extrema[i]]['x'])<2) and
+          (abs(dat[extrema[j]]['y']-dat[extrema[i]]['y'])>pp) then
+          pp:=abs(dat[extrema[j]]['y']-dat[extrema[i]]['y']);
+      if pp>mpp then begin
+        mpp:=pp;
+        fensterMitte:=extrema[i];
+      end;
+    end;
+  end;
+
+  for i:=0 to length(dat)-1 do
+    if abs(dat[i]['x']-dat[fensterMitte]['x']) >= breite then
+      dat[i]['y']:=0
+    else
+      dat[i]['y']:=dat[i]['y'] * (1+cos((dat[i]['x']-dat[fensterMitte]['x'])/breite*pi))/2;
+end;
+
 end.
 
-- 
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