#include <default.c>

STRING* sDrawTxt1;
STRING* sDrawTxt2;

void uu1ViewCheck(){
	switch(uu1){
		case 0:
		sDrawTxt1="0 - Box is fully outside the view frustum.";
		break;
		case 1:
		sDrawTxt1="1 - Box is partially inside the view frustum.";
		break;
		case 2:
		sDrawTxt1="2 - Box is fully inside the view frustum.";
		break;
	}
}

void uu2ViewCheck(){
	switch(uu2){
		case 0:
		sDrawTxt2="0 - Point is fully outside the view frustum.";
		break;
		case 1:
		sDrawTxt2="1 - Point is partially inside the view frustum.";
		break;
		case 2:
		sDrawTxt2="2 - Point is fully inside the view frustum.";
		break;
	}
}

void main()
{
	video_aspect = 4./3.;
	level_load(0);
	wait(2);

	vec_set(camera.x,vector(0,0,10));
	vec_set(camera.pan,vector(-10,-20,0));
	camera.clip_near = 1;
	camera.clip_far  = 60;
	camera.arc = 90;

	def_debug();
	
	int i=2;
	while (1){
		
		uu1ViewCheck();uu2ViewCheck();
	
		draw_box3d(vector(-4,-4,-4), vector(4,4,4), COLOR_GREEN, 100);
		draw_point3d(vector(0,-30,0), COLOR_RED, 100, 1);
		
		if(uu1 = view_check(camera,vector(-4,-4,-4),vector(4,4,4))){}
		draw_text(sDrawTxt1,5,120, COLOR_GREEN);
		
		if(uu2 = view_check(camera,vector(0,-30,0),vector(0,-30,0))){}
		draw_text(sDrawTxt2,5,140, COLOR_RED);
		
		if(camera.x <= -90) i=-2;
		if(camera.x >=  30) i= 2;
		
		camera.x -= i * time_step;
		camera.x = clamp (camera.x,-90,30);
		wait(1);
	}
}