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//Orbit trap Add---------------------------------------

vec3 colorBase = vec3(0.0,0.0,0.0);

vec3 cycle(vec3 c, float s) {
	return vec3(0.5)+0.5*vec3(cos(s*Cycles+c.x),cos(s*Cycles+c.y),cos(s*Cycles+c.z));
}

vec3 getColorOrbit() {
	orbitTrap.w = sqrt(orbitTrap.w);
	
	vec3 orbitColor;
	if (CycleColors) {
		orbitColor = cycle(X.xyz,orbitTrap.x)*X.w*orbitTrap.x +
		cycle(Y.xyz,orbitTrap.y)*Y.w*orbitTrap.y +
		cycle(Z.xyz,orbitTrap.z)*Z.w*orbitTrap.z +
		cycle(R.xyz,orbitTrap.w)*R.w*orbitTrap.w;
	} else {
		orbitColor = X.xyz*X.w*orbitTrap.x +
		Y.xyz*Y.w*orbitTrap.y +
		Z.xyz*Z.w*orbitTrap.z +
		R.xyz*R.w*orbitTrap.w;
	}
	
	vec3 color = mix(BaseColor, 3.0*orbitColor,  OrbitStrength);
	return color;
}

#ifdef  providesColor
vec3 baseColor(vec3 point, vec3 normal);
#endif

material getMaterial( in vec3 z0, in vec3 nor, in float item )
{//get material properties (color,refr/refl,gloss,spec,specExp)
	Mater0.color= getColorOrbit();
	return (item==0.0)?Mater0:Mater1; //you can extend this with a texture lookup etc.
}

float mapL(in vec3 z){//this is the DE for emissive light (use folding etc. to create multiple lights)
	//z-=lightPosition;
	vec3 z2 = z;
	return (UseEmissive2)?min( length(z-=lightPosition)-lightSize , length(z2-=lightPosition2)-lightSize2 ):length(z-=lightPosition)-lightSize;
}

	float p;
	p= dot(lightPosition,z);
	if (p>0) emColor= lightColor2;
	else emColor=lightColor;

vec4 getEmissiveDir( in vec3 pos)
{//get the direction to a DE based light
	vec2 vt=vec2(mapL(pos),0.0);//find emissive light dir by triangulating its nearest point

	float d=length(pos-lightPosition)-lightSize;
	float d2=min(d,length(pos-lightPosition2)-lightSize2);
	if(d2==d) emColor=lightColor; else emColor=lightColor2;

	return vec4(-normalize(vec3(-mapL(pos-vt.xyy)+mapL(pos+vt.xyy),
			-mapL(pos-vt.yxy)+mapL(pos+vt.yxy),-mapL(pos-vt.yyx)+mapL(pos+vt.yyx))),vt.x);
}

vec2 spherical(vec3 n) {
	return vec2 (acos(n.z)/PI, atan(n.y,n.x)/(2.0*PI) );
}

	if(UseBackgroundPicture){
		backColor = texture2D(texture,spherical(normalize(dir)).yx).xyz;
	}

	if(UseBackgroundPicture){
		backColor = texture2D(texture,spherical(normalize(rd)).yx).xyz;
	}

	if(UseBackgroundPicture){
		vec2 position =  (viewCoord+vec2(1.0))/2.0;
		position.y = 1.0-position.y;
		backColor = texture2D( texture, position).xyz;
	}

	if(UseBackgroundPicture){
		float theta = 1.57079633;
		backColor = texture2D( texture, spherical(normalize(vec3(rd.x,rd.y*cos(theta)-rd.z*sin(theta), rd.y*sin(theta)+  rd.z*cos(theta) ))).yx).xyz;
	}

coef = dot(nor,rd)-Falloff;
m.refrRefl = mix( 0.01,m.refrRefl, (coef));

m.color = mix( FalloffColor, BaseColor, (1-coef));