Added pgm drawing and got light ray tracing working

Still needs correct light simulation and reflections

1 files changed, 27 insertions, 0 deletions

diff --git a/pgm.c b/pgm.c
new file mode 100644
index 0000000..058b445
--- /dev/null
+++ b/pgm.c
@@ -0,0 +1,27 @@
+#include "pgm.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int pgm_write_header(FILE *fp, unsigned int w, unsigned int h)
+{
+	return fprintf(fp, "P3\n%d %d\n255\n", w, h);
+}
+
+int pgm_write_pixel(FILE *fp, color_t *c)
+{
+	return fprintf(fp, "%d %d %d\n", c->r, c->g, c->b);
+}
+
+color_t *color_set(color_t *c, uint8_t r, uint8_t g, uint8_t b)
+{
+	if (!c) {
+		c = (color_t *) malloc(sizeof(c));
+	}
+
+	c->r = r;
+	c->g = g;
+	c->b = b;
+
+	return c;
+}