intial work on plotting functions

1 files changed, 93 insertions, 0 deletions

diff --git a/src/plotting.c b/src/plotting.c
new file mode 100644
index 0000000..96d76c5
--- /dev/null
+++ b/src/plotting.c
@@ -0,0 +1,93 @@
+#include <stdlib.h>
+#include <string.h>
+#include "plotting.h"
+
+/*
+ * Gets the corresponding color for a given number of iterations according to a gradient
+ */
+color get_color(size_t iterations, size_t max_iterations, gradient map){
+    size_t val = (max_iterations - iterations) / max_iterations;
+    color color;
+
+    //TODO: map the interval of [0,max_iterations] to a value given a gradient
+    return color;
+}
+
+/*
+ * Gets the associated "red" value for a given number of iterations according to a gradient
+ */
+char get_red(size_t iterations, size_t max_iterations, gradient map){
+    char red;
+
+    return red;
+}
+
+/*
+ * Gets the associated "green" value for a given number of iterations according to a gradient
+ */
+char get_green(size_t iterations, size_t max_iterations, gradient map){
+    char green;
+
+    return green;
+}
+
+/*
+ * Gets the associated "blue" value for a given number of iterations according to a gradient
+ */
+char get_blue(size_t iterations, size_t max_iterations, gradient map){
+    char blue;
+
+    return blue;
+}
+
+colors_t* create_colors(size_t x, size_t y){
+    if(x <= 0 || y <= 0) return NULL;
+
+    char* red = malloc(x*y);
+    char* green = malloc(x*y);
+    char* blue = malloc(x*y);
+    
+    if(!red || !green || !blue){
+        free(red); free(green); free(blue);
+        return NULL;
+    }
+
+    colors_t* colors = malloc(sizeof(colors_t));
+    if(!colors){
+        free(red); free(green); free(blue);
+        return NULL;
+    }
+
+    colors->x = x;
+    colors->y = y;
+    colors->size = x*y;
+    colors->red = red;
+    colors->green = green;
+    colors->blue = blue;
+
+    return colors;
+}
+
+colors_t* copy_colors(colors_t* colors){
+    if(!colors) return NULL;
+
+    colors_t* colors_copy = create_colors(colors->x, colors->y);
+    if(!colors_copy) return NULL;
+
+    const size_t size = colors->size;
+
+    memcpy(colors_copy->red, colors->red, size);
+    memcpy(colors_copy->green, colors->green, size);
+    memcpy(colors_copy->blue, colors->blue, size);
+
+    return colors_copy;
+}
+
+void free_colors(colors_t* colors){
+    if(!colors) return;
+
+    free(colors->red);
+    free(colors->green);
+    free(colors->blue);
+    free(colors);
+}