Basic explorer with window resize, iterations change, moving around

1 files changed, 74 insertions, 20 deletions

diff --git a/src/color.c b/src/color.c
index f758595..2ad4bad 100644
--- a/src/color.c
+++ b/src/color.c
@@ -1,22 +1,76 @@
 #include "mandel.h"
 
-/* static Color *create_palette(Color start, Color end) */
-/* { */
-    /* int red_step = abs(end.rgb.r - start.rgb.r) / MAX_ITERATION; */
-    /* int green_step = abs(end.rgb.g - start.rgb.g) / MAX_ITERATION; */
-    /* int blue_step = abs(end.rgb.b - start.rgb.b) / MAX_ITERATION; */
-    /*  */
-    /* Color *palette = (Color*)malloc(sizeof(Color) * (MAX_ITERATION + 1)); */
-    /* if (palette == NULL) */
-    /*     return NULL; */
-    /* for (int i = 0; i < MAX_ITERATION; i++) */
-    /* { */
-    /*     #<{(| palette[i] = helper_HSL_to_RGB(i, 0.6, 1.0); |)}># */
-    /*     #<{(| printf("%x\n", palette[i].hexcode); |)}># */
-    /*     palette[i].rgb.r = i * red_step + start.rgb.r; */
-    /*     palette[i].rgb.g = i * green_step + start.rgb.g; */
-    /*     palette[i].rgb.b = i * blue_step + start.rgb.b; */
-    /* } */
-    /* palette[MAX_ITERATION].hexcode = 0x0; */
-    /* return palette; */
-/* } */
+#define MAX(x, y) (x > y ? x : y)
+#define MIN(x, y) (x < y ? x : y)
+
+static Color	color_hsl_to_rgb(ColorHSL color_hsl);
+
+Color	*color_palette_new(Color *palette, int iterations)
+{
+	ColorHSL	hsl;
+
+    palette = realloc(palette, sizeof(Color) * (iterations + 1));
+	if (palette == NULL)
+		return NULL;
+    for (int i = 0; i < iterations; i++)
+    {
+		hsl.h = (int)(255.0 * ((double)i / (double)iterations));
+		hsl.s = 150;
+		hsl.l = 127;
+		palette[i] = color_hsl_to_rgb(hsl);
+    }
+    palette[iterations].data = 0x0;
+    return palette;
+}
+
+static Color	color_hsl_to_rgb(ColorHSL color_hsl)
+{
+	Color	color_rgb;
+	double	h;
+	double	s;
+	double	l;
+	double	r;
+	double	g;
+	double	b;
+	double temp1, temp2, tempr, tempg, tempb;
+
+	h = color_hsl.h / 256.0;
+	s = color_hsl.s / 256.0;
+	l = color_hsl.l / 256.0;
+	if(s == 0)
+	{
+		r = l;
+		g = l;
+		b = l;
+	}
+	else
+	{
+		if (l < 0.5) temp2 = l * (1 + s);
+		else temp2 = (l + s) - (l * s);
+		temp1 = 2 * l - temp2;
+		tempr = h + 1.0 / 3.0;
+		if (tempr > 1) tempr--;
+		tempg = h;
+		tempb = h - 1.0 / 3.0;
+		if (tempb < 0) tempb++;
+
+		if (tempr < 1.0 / 6.0) r = temp1 + (temp2 - temp1) * 6.0 * tempr;
+		else if (tempr < 0.5) r = temp2;
+		else if (tempr < 2.0 / 3.0) r = temp1 + (temp2 - temp1) * ((2.0 / 3.0) - tempr) * 6.0;
+		else r = temp1;
+
+		if (tempg < 1.0 / 6.0) g = temp1 + (temp2 - temp1) * 6.0 * tempg;
+		else if (tempg < 0.5) g = temp2;
+		else if (tempg < 2.0 / 3.0) g = temp1 + (temp2 - temp1) * ((2.0 / 3.0) - tempg) * 6.0;
+		else g = temp1;
+
+		if(tempb < 1.0 / 6.0) b = temp1 + (temp2 - temp1) * 6.0 * tempb;
+		else if(tempb < 0.5) b = temp2;
+		else if(tempb < 2.0 / 3.0) b = temp1 + (temp2 - temp1) * ((2.0 / 3.0) - tempb) * 6.0;
+		else b = temp1;
+	}
+	color_rgb.r = (int)(r * 256.0);
+	color_rgb.g = (int)(g * 256.0);
+	color_rgb.b = (int)(b * 256.0);
+	return (color_rgb);
+}