add svg export

Author: summasmiff

fermat_spiral/fermat_spiral.pde

@@ -4,6 +4,7 @@ int _numPoints = 450;
 float _angle = 137.5;
 float _scale = 10;
 float _seedSize = 20;
+String _saveName = "fermat_spiral_";
 
 
 void setup() {
@@ -15,21 +16,58 @@ void setup() {
 }
 
 void draw() {
-  for(int n=0; n<_numPoints; n++) {
-      float theta = n * radians(_angle);
-      float radius = sqrt(n) * _scale;
-      float translateX = radius * cos(theta) + width/2;
-      float translateY = radius * sin(theta) + height/2;
-      
-      float x = 0;
-      float y = 0;
-      
-      float size = (n / 42) + _seedSize;
-
-      pushMatrix();      
-      translate(translateX, translateY);
-      rotate(theta);
-      quad(x, y+size/4, x+size/2, y, x+size, y+size/4, x+size/2, y+ size/2);
-      popMatrix();
-    }
+  for (int n=0; n<_numPoints; n++) {
+    float theta = n * radians(_angle);
+    float radius = sqrt(n) * _scale;
+    float translateX = radius * cos(theta) + width/2;
+    float translateY = radius * sin(theta) + height/2;
+
+    float x = 0;
+    float y = 0;
+
+    float size = (n / 42) + _seedSize;
+
+    pushMatrix();      
+    translate(translateX, translateY);
+    rotate(theta);
+    quad(x, y+size/4, x+size/2, y, x+size, y+size/4, x+size/2, y+ size/2);
+    popMatrix();
+  }
+}
+
+void keyPressed() {
+  if (key == 's' || key == 'S') {
+    exportSVG();
+  }
+}
+
+void exportSVG() {
+  String exportName = _saveName + round(_seedSize) + ".svg";
+  PGraphics pg = createGraphics(width, height, SVG, exportName);
+  pg.beginDraw();
+  pg.noFill();
+  pg.strokeWeight(1);
+  pg.stroke(0);
+
+  for (int n=0; n<_numPoints; n++) {
+    float theta = n * radians(_angle);
+    float radius = sqrt(n) * _scale;
+    float translateX = radius * cos(theta) + width/2;
+    float translateY = radius * sin(theta) + height/2;
+
+    float x = 0;
+    float y = 0;
+
+    float size = (n / 42) + _seedSize;
+
+    pg.pushMatrix();      
+    pg.translate(translateX, translateY);
+    pg.rotate(theta);
+    pg.quad(x, y+size/4, x+size/2, y, x+size, y+size/4, x+size/2, y+ size/2);
+    pg.popMatrix();
+  }
+
+  pg.endDraw();
+  pg.dispose();
+  println("saved " + exportName);
 }