Runs on arduino, output not testetarduino

1 files changed, 137 insertions, 0 deletions

diff --git a/scene.ino b/scene.ino
new file mode 100644
index 0000000..77dbdc1
--- /dev/null
+++ b/scene.ino
@@ -0,0 +1,137 @@
+#include "scene.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+static inline void link_object(space_t *s, object_t *o)
+{
+	if (s) {
+		o->next = s->objects;
+		s->objects = o;
+	} else {
+		o->next = 0;
+	}
+}
+
+container_t *container_init(container_t *c, unsigned objs, unsigned mats, unsigned ligs) 
+{
+	c->obj_index = c->mat_index = c->lig_index = 0;
+
+	c->obj_cap = objs;
+	c->mat_cap = mats;
+	c->lig_cap = ligs;
+
+	return c;
+}
+
+space_t *container_prepare_space(container_t *c)
+{
+	//memset(&c->space, 0, sizeof(space_t));
+	for (int i = 0; i < sizeof(space_t); i++) {
+		*(uint8_t *)&c->space = 0;
+	}
+
+	return &c->space;
+}
+
+// Finds the next empty object_t space
+// Return NULL if full
+static inline object_t *container_obj_space(container_t *cont) 
+{
+	if (cont->obj_index >= cont->obj_cap) {
+		//fprintf(stderr, "Could not create object, because container is full\n");
+		return NULL;
+	}
+
+	// Find a nice spot in the content blob
+	return &((object_t *) cont->content)[cont->obj_index++];
+}
+
+static inline material_t *container_mat_space(container_t *cont) 
+{
+	if (cont->mat_index >= cont->mat_cap) {
+		//fprintf(stderr, "Could not create material, because container is full\n");
+		return NULL;
+	}
+
+	// Find a nice spot in the content blob.
+	// Remember to jump over objects
+	return &((material_t *) (
+				cont->content + 
+				sizeof(object_t) * cont->obj_cap
+				))[cont->mat_index++];
+}
+
+static inline light_t *container_lig_space(container_t *cont) 
+{
+	if (cont->lig_index >= cont->lig_cap) {
+		//fprintf(stderr, "Could not create light, because container is full\n");
+		return NULL;
+	}
+
+	// Find a nice spot in the content blob.
+	// Remember to jump over objects and materials
+	return &((light_t *) (
+				cont->content + 
+				sizeof(object_t) * cont->obj_cap + 
+				sizeof(material_t) * cont->mat_cap
+				))[cont->lig_index++];
+}
+
+object_t *add_object(container_t *cont, unsigned type)
+{
+
+	object_t *o = container_obj_space(cont);
+	if (!o) {
+		return NULL;
+	}
+
+	// Fill out the data
+	o->type = type;
+
+	// Link to the linked list
+	link_object(&cont->space, o);
+
+	return o;
+}
+
+light_t *add_light(container_t *cont)
+{
+	light_t *o = container_lig_space(cont);
+	if (!o) {
+		return NULL;
+	}
+
+	space_t *s = &cont->space;
+	if (s) {
+		o->next = s->lights;
+		s->lights = o;
+	} else {
+		o->next = NULL;
+	}
+
+	return o;
+}
+
+// It's alot easier to set the stuff outside of this function
+material_t *add_material(container_t *cont)
+{
+	material_t *m = container_mat_space(cont);
+
+	return m;
+}
+
+void obj_norm_at(object_t *o, vector_t *dest, vector_t *point)
+{
+	switch(o->type) {
+		case TYPE_SPHERE:
+			vector_sub(dest, point, &o->sph.center);
+			vector_scale_inv(dest, dest, vector_len(dest));
+			break;
+		case TYPE_PLANE:
+			vector_copy(dest, &o->pl.norm);
+			break;
+	}
+
+	return;
+}