#include?
#include?
#include?“rt.h“
#include?“rtlib.h“


object?objs?[NUM_OBJS];

LIGHT?lights?[NUM_LIGHTS];

int?obj_num?=?4;

VEC_PT?normalize?（VEC_PT?vec）
{
???/***?find?length?of?vec;?scale?vec?by?length;?return?new?vec?***/
	double?len;
	len?=?sqrt（vec.x?*?vec.x?+?vec.y?*?vec.y?+?vec.z?*?vec.z）;
	vec.x?=?vec.x/len;
	vec.y?=?vec.y/len;
	vec.z?=?vec.z/len;
	return?vec;
}

double?vec_len（VEC_PT?vec）
{
	double?len;
	len?=?sqrt（vec.x?*?vec.x?+?vec.y?*?vec.y?+?vec.z?*?vec.z）;
	return?len;
}

double?dot?（VEC_PT?v1?VEC_PT?v2）

{
???/***?return?result?of?dot?product?formula?***/
	double?dot_res;
	dot_res?=?v1.x?*?v2.x?+?v1.y?*?v2.y?+?v1.z?*?v2.z;
	return?dot_res;
}


VEC_PT?substract?（VEC_PT?vec1?VEC_PT?vec2）
{
	vec1.x?=?vec1.x?-?vec2.x;
	vec1.y?=?vec1.y?-?vec2.y;
	vec1.z?=?vec1.z?-?vec2.z;
	return?vec1;
}

VEC_PT?add?（VEC_PT?vec1?VEC_PT?vec2）
{
	vec1.x?=?vec1.x?+?vec2.x;
	vec1.y?=?vec1.y?+?vec2.y;
	vec1.z?=?vec1.z?+?vec2.z;
	return?vec1;
}

VEC_PT?multipy_cons?（double?cons?VEC_PT?vec）
{
	vec.x?=?vec.x?*?cons;
	vec.y?=?vec.y?*?cons;
	vec.z?=?vec.z?*?cons;
	return?vec;
}

COLOR?add_color?（COLOR?c1?COLOR?c2）
{
	c1.R?=?c1.R?+?c2.R;
	c1.G?=?c1.G?+?c2.G;
	c1.B?=?c1.B?+?c2.B;
	return?c1;
}

COLOR?cap_color_to_one?（COLOR?c）
{
	if（c.R?>?1）
		c.R?=?1;
	if（c.G?>1）
		c.G?=?1;
	if（c.B?>?1）
		c.B?=?1;
	return?c;
}

void?define_scene?（void）
{
???/***?define?all?objects?（location?type?color）?and?lights?here?***/
???objs?[0].sph_ctr.x?=?0.5;
???objs?[0].sph_ctr.y?=?0.8;
???objs?[0].sph_ctr.z?=?4.0;
???
	?objs?[0].object_type?=?SPHERE;
	?objs?[0].sph_radius?=?0.5;

???objs?[0].color.R?=?1;
???objs?[0].color.G?=?0;
???objs?[0].color.B?=?0;

???objs?[1].sph_ctr.x?=?-0.5;
???objs?[1].sph_ctr.y?=?0.15;
???objs?[1].sph_ctr.z?=?4.2;
???
	?objs?[1].object_type?=?SPHERE;
	?objs?[1].sph_radius?=?0.6;

???objs?[1].color.R?=?0;
???objs?[1].color.G?=?1;
???objs?[1].color.B?=?0;

???objs?[2].plane_normal.x?=?0;
???objs?[2].plane_normal.y?=?1;
???objs?[2].plane_normal.z?=?0;
???
	?objs?[2].object_type?=?PLANE;
	?objs?[2].plane_D?=?0.9;

???objs?[2].color.R?=?0.3;
???objs?[2].color.G?=?0.3;
???objs?[2].color.B?=?0.3;
???objs?[2].color2.R?=?1;
???objs?[2].color2.G?=?1;
???objs?[2].color2.B?=?1;
???
	?objs?[3].box_ll.x?=?0.3;
???objs?[3].box_ll.y?=?-0.6;
???objs?[3].box_ll.z?=?2.3;
	?objs?[3].box_ur.x?=?0.7;
???objs?[3].box_ur.y?=?-0.2;
???objs?[3].box_ur.z?=?3.0;
???
	?objs?[3].object_type?=?BOX;

???objs?[3].color.R?=?0;
???objs?[3].color.G?=?0;
???objs?[3].color.B?=?1;

???lights?[0].location.x?=?-10;
???lights?[0].location.y?=?10;
???lights?[0].location.z?=?-5;

	?lights[0].color.R?=?1.0;
	?lights[0].color.G?=?1.0;
	?lights[0].color.B?=?1.0;

???lights?[1].location.x?=?0;
???lights?[1].location.y?=?10;
???lights?[1].location.z?=?-10;

	?lights[1].color.R?=?1.0;
	?lights[1].color.G?=?1.0;
	?lights[1].color.B?=?

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-04-03?09:10??pj2_normal\
?????文件?????????346??2012-02-07?04:23??pj2_normal\Makefile
?????文件???????64935??2012-02-08?10:29??pj2_normal\pj2-f.jpg
?????文件?????2515854??2012-02-07?12:59??pj2_normal\pj2-f.ppm
?????文件????????7539??2012-02-07?12:59??pj2_normal\rt.c
?????文件?????????927??2012-02-07?05:43??pj2_normal\rt.h
?????文件?????????225??2012-02-07?04:23??pj2_normal\rtlib.h
?????文件????????6312??2012-02-07?04:23??pj2_normal\rtlib.o