Added: Unoptimized tricorn algorithm draft

Implementierung/Makefile

@@ -1,4 +1,5 @@
 CFLAGS= -Wall -Wextra -O3
+LDLIBS = -lm
 CC = gcc
 
 .PHONY: all clean
@@ -6,6 +7,6 @@ CC = gcc
 all: tricorn
 
 tricorn: main.c tricorn.c
-	$(CC) $(CFLAGS) -o $@ $^
+	$(CC) $(CFLAGS) -o $@ $^ $(LDLIBS)
 clean:
 	rm -f tricorn

Implementierung/main.c

@@ -1,6 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
+#include <sys/types.h>
 
 void save_bmp(const char *filename, unsigned char *img, size_t width, ssize_t height);
 

Implementierung/tricorn.c

@@ -1,4 +1,39 @@
 #include "tricorn.h"
-void tricorn(float complex  start, size_t width, size_t height, float res, unsigned n, _Bool color, unsigned char* img){
+
+static const float convergenceLimit = 2.0f;
+unsigned converge(float complex position,unsigned n);
+
+void tricorn(float complex  start, size_t width, ssize_t height, float res, unsigned n, _Bool color, unsigned char* img){
     
+    height = height < 0 ?  height*-1 : height;
+
+    for(size_t i = 0; i < width; i++){
+        for(ssize_t j = 0; j < height; j++){
+
+            unsigned value = converge(start + (i*res + I*j*res),n);
+            size_t position = (i*width +j) *3;
+
+            if(!color){
+                img[position] =  value;
+                img[position + 1] = value;
+                img[position + 2] = value;
+            }
+            else{ // TEMPORARY / Bad looking color gradient before testing
+                img[position] = (value % 85)*3;
+                img[position + 1] = 85 +(value % 85) * 2;
+                img[position + 2] = 170 +(value % 85);
+            }
+
+        }
+    }
+}
+unsigned converge(float complex position,unsigned n){
+
+    complex float result  = 0;
+    for(unsigned i = 0; i < n; i++){
+        result = cpowf(conjf(result),2) + position;
+        if(sqrtf(crealf(result)+cimagf(result)) > convergenceLimit)
+            return 255-4*(i % 64);
+    }
+    return 0;
 }

Implementierung/tricorn.h

@@ -1,3 +1,5 @@
 #include <complex.h>
 #include <stddef.h>
-void tricorn(float complex  start, size_t width, size_t height, float res, unsigned n, _Bool color, unsigned char* img);
+#include <math.h>
+#include <sys/types.h>
+void tricorn(float complex  start, size_t width, ssize_t  height, float res, unsigned n, _Bool color, unsigned char* img);