phyllotaxic spiral

01-archimedean-spiral/002-in-out-sine-wave.c

@@ -52,7 +52,7 @@ int main(int argc, char **argv){
 		}
 	}
 
-	// OPTIONAL: pick up the pen when it gets to the middle
+	// // OPTIONAL: pick up the pen when it gets to the middle
 	// fprintf(file, "\"/>\n"); // closing quote
 	// fprintf(file, "<polyline fill=\"none\" stroke=\"#000000\" points=\"");  // hanging open quote
 

01-archimedean-spiral/004-in-out-phyllotaxic-join.c

@@ -0,0 +1,75 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <math.h>
+
+#include "../common/noise.c"
+
+#define TWOPI 6.28318530718
+
+// output
+char filename[128] = "004-phyllotaxic-join.svg\0";
+char path[128] = "out/\0";
+
+// document
+int width = 800;
+int height = 800;
+
+// shape
+int REVOLUTIONS = 8;
+float SPACING = 7.0f;
+
+int main(int argc, char **argv){
+	time_t t;
+	srand((unsigned) time(&t));
+	float seed = rand()%1000/100.0;
+
+	strcat(path, filename);
+	FILE *file = fopen(path, "w");
+	// HEADER
+	fprintf(file, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
+	fprintf(file, "<svg version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\" ");
+	fprintf(file, "x=\"0px\" y=\"0px\" width=\"%dpx\" height=\"%dpx\" ", width, height);
+	fprintf(file, "viewBox=\"0 0 %d %d\">\n", width, height);
+	// BODY
+	fprintf(file, "<g>\n");
+	fprintf(file, "<polyline fill=\"none\" stroke=\"#000000\" points=\"");  // hanging open polyline
+
+	float divider = 10 * 60;
+	float wobbleFreq = 13.0;
+	float wobbleMag = 1;
+	// wobbleFreq = 7.0;
+	// wobbleMag = 0.33;
+
+	for(int i = REVOLUTIONS-1; i >= 0; i--){
+		for(float a = TWOPI; a >= 0; a -= TWOPI/divider){
+			float revolution = 2*(i+a/TWOPI);
+			float SCALE = 1.5 * revolution;
+			float x = width*.5  + cos(a) * SCALE * (revolution + sin(a*wobbleFreq)*wobbleMag );
+			float y = height*.5 + sin(a) * SCALE * (revolution + sin(a*wobbleFreq)*wobbleMag );
+			fprintf(file, "%.2f,%.2f ", x, y);
+		}
+	}
+
+	// // OPTIONAL: pick up the pen when it gets to the middle
+	// fprintf(file, "\"/>\n"); // closing polyline
+	// fprintf(file, "<polyline fill=\"none\" stroke=\"#000000\" stroke-miterlimit=\"10\" points=\"");  // hanging open polyline
+
+	for(int i = 0; i < REVOLUTIONS; i++){
+		for(float a = 0; a < TWOPI; a += TWOPI/divider){
+			float revolution = 2*(i+a/TWOPI);
+			float SCALE = 1.5 * revolution;
+			float x = width*.5  + cos(a-TWOPI*.5) * SCALE * (revolution + sin(a*wobbleFreq)*wobbleMag );
+			float y = height*.5 + sin(a-TWOPI*.5) * SCALE * (revolution + sin(a*wobbleFreq)*wobbleMag );
+			fprintf(file, "%.2f,%.2f ", x, y);
+		}
+	}
+
+	fprintf(file, "\"/>\n"); // closing polyline
+
+	fprintf(file, "</g>\n");
+	fprintf(file, "</svg>");
+	fclose(file);
+	return 0;
+}

01-archimedean-spiral/004-in-out-phyllotaxic.c

@@ -0,0 +1,89 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <math.h>
+
+#include "../common/noise.c"
+
+#define TWOPI 6.28318530718
+
+// output
+char filename[128] = "004-phyllotaxic.svg\0";
+char path[128] = "out/\0";
+
+// document
+int width = 800;
+int height = 800;
+
+// shape
+int REVOLUTIONS = 6;
+float SPACING = 7.0f;
+
+int main(int argc, char **argv){
+	time_t t;
+	srand((unsigned) time(&t));
+	float seed = rand()%1000/100.0;
+
+	strcat(path, filename);
+	FILE *file = fopen(path, "w");
+	// HEADER
+	fprintf(file, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
+	fprintf(file, "<svg version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\" ");
+	fprintf(file, "x=\"0px\" y=\"0px\" width=\"%dpx\" height=\"%dpx\" ", width, height);
+	fprintf(file, "viewBox=\"0 0 %d %d\">\n", width, height);
+	// BODY
+	fprintf(file, "<g>\n");
+	fprintf(file, "<polyline fill=\"none\" stroke=\"#000000\" points=\"");  // hanging open polyline
+
+	float divider = 5 * 60;
+	float SCALE = 26;
+	float wobbleFreq = 19.0;
+	float wobbleMag = 0.4;
+	// float SCALE = 45;
+	// float REVOLUTIONS = 7;
+	// float wobbleFreq = 7.0;
+	// float wobbleMag = 0.33;
+
+	for(int i = REVOLUTIONS-1; i >= 0; i--){
+		for(float a = TWOPI; a >= 0; a -= TWOPI/divider){
+			float revolution = 2*(i+a/TWOPI);
+			float x = width*.5  + cos(a) * SCALE * (revolution + sin(a*wobbleFreq)*wobbleMag);
+			float y = height*.5 + sin(a) * SCALE * (revolution + sin(a*wobbleFreq)*wobbleMag);
+			fprintf(file, "%.2f,%.2f ", x, y);
+		}
+	}
+
+	// // OPTIONAL: pick up the pen when it gets to the middle
+	// fprintf(file, "\"/>\n"); // closing quote
+	// fprintf(file, "<polyline fill=\"none\" stroke=\"#000000\" stroke-miterlimit=\"10\" points=\"");  // hanging open quote
+
+	for(int i = 0; i < REVOLUTIONS; i++){
+		for(float a = 0; a < TWOPI; a += TWOPI/divider){
+			float revolution = 2*(i+a/TWOPI);
+			float x = width*.5  + cos(a-TWOPI*.5) * SCALE * (revolution + sin(a*wobbleFreq)*wobbleMag);
+			float y = height*.5 + sin(a-TWOPI*.5) * SCALE * (revolution + sin(a*wobbleFreq)*wobbleMag);
+			fprintf(file, "%.2f,%.2f ", x, y);
+		}
+	}
+
+	// fprintf(file, "\"/>\n"); // closing quote
+	// fprintf(file, "<polyline fill=\"none\" stroke=\"#000000\" stroke-miterlimit=\"10\" points=\"");  // hanging open quote
+
+	// int i = 14;
+	// 	for(float a = 0; a <= TWOPI+.0001; a += TWOPI/divider){
+	// 		float wobbleIncr = 5*sqrt(i + 2*a/TWOPI);
+	// 		wobbleIncr = 1.0;
+	// 		x = width*.5  + SCALE * cos(a) * (i + sin(a*wobbleFreq)*wobbleMag*wobbleIncr );
+	// 		y = height*.5 + SCALE * sin(a) * (i + sin(a*wobbleFreq)*wobbleMag*wobbleIncr );
+	// 		fprintf(file, "%.2f,%.2f ", x, y);
+	// 	}
+
+	//+ cos(turn) * .2*sqrt(i + 2*a/TWOPI) 
+	fprintf(file, "\"/>\n"); // closing quote
+
+	fprintf(file, "</g>\n");
+	fprintf(file, "</svg>");
+	fclose(file);
+	return 0;
+}