From 0437a53ca0200ea375c37a53125e93929cc882a1 Mon Sep 17 00:00:00 2001
From: Anish Lakhwara <anish@lakhwara.com>
Date: Mon, 24 Feb 2020 14:53:57 +1100
Subject: [PATCH] made lines, now with motion blur, not sure if the motion blur
 actiually works

---
 lines/lines.pde | 104 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 lines/lines.pde

diff --git a/lines/lines.pde b/lines/lines.pde
new file mode 100644
index 0000000..6235d5f
--- /dev/null
+++ b/lines/lines.pde
@@ -0,0 +1,104 @@
+int[][] result;
+float t, c;
+
+float ease(float p) {
+  return 3*p*p - 2*p*p*p;
+}
+
+float ease(float p, float g) {
+  if (p < 0.5) 
+    return 0.5 * pow(2*p, g);
+  else
+    return 1 - 0.5 * pow(2*(1 - p), g);
+}
+
+float mn = .5*sqrt(3), ia = atan(sqrt(.5));
+
+void push() {
+  pushMatrix();
+  pushStyle();
+}
+
+void pop() {
+  popStyle();
+  popMatrix();
+}
+
+void draw() {
+
+  if (!recording) {
+    t = mouseX*1.0/width;
+    c = mouseY*1.0/height;
+    if (mousePressed)
+      println(c);
+    draw_();
+  } else {
+    for (int i=0; i<width*height; i++)
+      for (int a=0; a<3; a++)
+        result[i][a] = 0;
+
+    c = 0;
+    for (int sa=0; sa<samplesPerFrame; sa++) {
+      t = map(frameCount-1 + sa*shutterAngle/samplesPerFrame, 0, numFrames, 0, 1);
+      draw_();
+      loadPixels();
+      for (int i=0; i<pixels.length; i++) {
+        result[i][0] += pixels[i] >> 16 & 0xff;
+        result[i][1] += pixels[i] >> 8 & 0xff;
+        result[i][2] += pixels[i] & 0xff;
+      }
+    }
+
+    loadPixels();
+    for (int i=0; i<pixels.length; i++)
+      pixels[i] = 0xff << 24 | 
+        int(result[i][0]*1.0/samplesPerFrame) << 16 | 
+        int(result[i][1]*1.0/samplesPerFrame) << 8 | 
+        int(result[i][2]*1.0/samplesPerFrame);
+    updatePixels();
+
+    saveFrame("fr###.png");
+    println(frameCount,"/",numFrames);
+    if (frameCount==numFrames)
+      exit();
+  }
+}
+
+int samplesPerFrame = 5;
+int numFrames = 50;
+float shutterAngle = 1.5;
+
+boolean recording = true;
+
+void setup(){
+ size(500,500);
+ result = new int[width*height][3];
+}
+
+void draw_(){
+  background(0);
+
+  float t = 1.0*(frameCount-1)/numFrames;
+
+  stroke(20 + 225 * sin(TWO_PI*t), 20 + 255 * cos(TWO_PI*t), 170);
+//  fill(color(50 * sin(TWO_PI*t), 0,0));
+  strokeWeight(4 + 2 * sin(TWO_PI*t));
+
+
+
+//  line(250,250+50*cos(TWO_PI*t),250,250+50*sin(TWO_PI*t));
+//  line(250+50*cos(TWO_PI*t),250,250+50*sin(TWO_PI*t),250);
+  for (int i = 230; i <= 250; i += 5) {
+    //line(i+50*cos(TWO_PI*t),i+50*sin(TWO_PI*t),i-50*sin(TWO_PI*t),i+50*cos(TWO_PI*t));
+    //line(i+50*sin(TWO_PI*t),i+50*cos(TWO_PI*t),i+50*cos(TWO_PI*t),i-50*cos(TWO_PI*t));
+    //line(i+50*cos(TWO_PI*t),i-50*cos(TWO_PI*t),i+50*sin(TWO_PI*t),i-50*sin(TWO_PI*t));
+    line(i-50*cos(TWO_PI*t),i+50*cos(TWO_PI*t),i+50*sin(TWO_PI*t),i+50*sin(TWO_PI*t));
+    line(i+50*cos(TWO_PI*t),i-50*cos(TWO_PI*t),i-50*sin(TWO_PI*t),i-50*sin(TWO_PI*t));
+    //line(i-50*cos(TWO_PI*t),i+50*cos(TWO_PI*t),i+50*sin(TWO_PI*t),i-50*sin(TWO_PI*t));
+    line(i+50*sin(TWO_PI*t),i-50*sin(TWO_PI*t),i-50*cos(TWO_PI*t),i-50*cos(TWO_PI*t));
+    line(i-50*sin(TWO_PI*t),i+50*sin(TWO_PI*t),i+50*cos(TWO_PI*t),i+50*cos(TWO_PI*t));
+  }
+  if(frameCount<=numFrames){
+    saveFrame("fr###.png");
+  }
+}