Added basic color

1 files changed, 65 insertions, 0 deletions

diff --git a/src/color.c b/src/color.c
new file mode 100644
index 0000000..45a00fa
--- /dev/null
+++ b/src/color.c
@@ -0,0 +1,65 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   color.c                                            :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: charles <charles.cabergs@gmail.com>        +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2020/05/13 11:53:53 by charles           #+#    #+#             */
+/*   Updated: 2020/05/13 13:00:48 by charles          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "scop.h"
+
+#include <string.h>
+float	*color_new(size_t n)
+{
+	size_t			i;
+	float			step;
+	float			*colors;
+	union u_color	c;
+
+	if ((colors = malloc(sizeof(float) * (n * 4))) == NULL)
+		return (NULL);
+	step = 1.0 / (float)n;
+	i = 0;
+	c.r = 0.0;
+	c.g = 0.0;
+	c.b = 0.0;
+	c.a = 1.0;
+	while (i < n)
+	{
+		c.r += step;
+		c.g += step;
+		c.b += step;
+		ft_memcpy(&colors[i * 4], c.data, 4 * sizeof(float));
+		i++;
+	}
+	return (colors);
+}
+
+bool	color_merge_vertices(t_object *object)
+{
+	size_t	i;
+	float	*colors;
+	float	*new_vertices;
+
+	if ((colors = color_new(object->vertices_len)) == NULL)
+		return (false);
+	if ((new_vertices = malloc(sizeof(float) * (object->vertices_len * 8))) == NULL)
+	{
+		free(colors);
+		return (false);
+	}
+	i = 0;
+	while (i < object->vertices_len)
+	{
+		ft_memcpy(&new_vertices[i * 8], &object->vertices[i * 4], 4 * sizeof(float));
+		ft_memcpy(&new_vertices[i * 8 + 4], &colors[i * 4], 4 * sizeof(float));
+		i++;
+	}
+	free(object->vertices);
+	object->vertices = new_vertices;
+	return (true);
+}