window_complex position buffer, basic palette, mandelbrot working

1 files changed, 24 insertions, 0 deletions

diff --git a/src/helper.c b/src/helper.c
index e69de29..f3b040b 100644
--- a/src/helper.c
+++ b/src/helper.c
@@ -0,0 +1,24 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   helper.c                                           :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/02/24 11:54:57 by cacharle          #+#    #+#             */
+/*   Updated: 2020/02/24 12:17:08 by cacharle         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "fractol.h"
+
+void	h_offset_to_complex(t_state *state, t_complex *z, int offset)
+{
+	int y;  // unoptimized
+	int x;
+
+	y = offset / state->window.width;
+	x = offset % state->window.width;
+	z->a = y / state->window.height * state->plane.a;
+	z->b = x / state->window.width * state->plane.b;
+}