/*************************
 ** Output methods
 */

/*
output { 
	type ppm;
	width 800;
	height 400;
	output-file "test.ppm";
}
*/

output {
	type X-root;
	update-time -1;		// Time between updates in seconds
}

/*************************
 ** Orbits
 */

orbit "fixed1" {
	type fixed-position;
	position 15.0 20.0;
}

orbit "random1" {
	type random-position;
}

orbit "circular1" {
	type circular;		
	nodes 30.0;		// Position of the nodes (crossing the equator)
	angle 30.0;		// Angle of the orbital plane w.r.t. equator
	period 100;		// Orbital period in seconds
	time-origin now;	// Temporal origin of the orbit 
				// ("date/time" or now)
	precession 5.0;		// Precession of nodes per orbit
	// precession-period 86400 // Precession period of nodes
}

/*************************
 ** Content providers
 */

content "earth" {
	bitmap {		// Bitmap
		file "earth.jpg";
		smooth;
	}
}

content "earthnight" {
	bitmap {
		file "earthnight.jpg";
		smooth;
	}
}

content "earthdots" {
	ref { ref "earth"; }
	latlongmarks {
		longitude-divs 12;
		longitude-minor-divs 15;
		scale-long-divs;
	}
}

content "terminator-test" {
	terminator {
		/* Example of an orbit reference
		sun {
			ref { ref "circular1"; }
		}
		*/
		sun {
			type circular;
			nodes 30.0;
			angle 30.0;
			period 100;
			time-origin now;
			precession 5.0;
		}
		night {
			ref { ref "earthnight"; }
		}
		day {
			ref { ref "earthdots"; }
		}
		boundary-width 30.0;
		boundary-blend linear;
	}
}

content "mixedbag" {		// Each part is optional
/* The following two options modify bitmap and outline colourings
 * neither is implemented yet
	bump-map "earth.height";
	sunlight {
		time-origin now; // Temporal origin ("date/time" or now)
		speed 1.0;	// Fraction of real-time to run at
		ecliptic 10.0;	// Ecliptic angle
		nodes
	}
*/
	ref { ref "earthdots"; }
/*
	geodesic {		// Line from one lat/long to another
		pt 0.0 53.0;
		pt -120.0 32.0;
		colour 255 127 0;
		//width 2;	// Width in pixels -- really use this?
		// Compute these by midpoint division and
		// normalisation to the sphere surface in 3-space?
	}
	markers {		// Draw markers
		marker-type cross;
		colour 255 255 255;
		marker 30.0 0.0 "Node 1";
		marker -150.0 0.0 "Node 2";
		marker-type dot;
		colour 255 0 0;
		marker 0.0 0.0 "Origin";
	}
	outline {		// Closed loop of solid colour
		colour 0 255 0;
		pt 0.0 0.0;
		pt 20.0 0.0;
		pt 20.0 20.0;
		pt 0.0 20.0;
	}
*/
	loxodrome {		// Line of constant heading
		start 30.0 -30.0;
		end -60.0 30.0;
		loops 2;
		colour 255 255 0;
	}
/*
	background-colour 0 0 0;// If not specified, no background 
				// clearing is done
*/
}

content "amiga" {
	check {
		longitude-divs 12;
		latitude-divs 6;
	}
}

content "amiga2" {
	check {
		longitude-divs 30;
		colour1 127 0 0;
		colour2 0 0 255;
	}
}

projection "planar-parallel" {
	type planar;
	subtype orthographic;
}

projection "planar-stereographic" {
	type planar;
	subtype stereographic;
}

projection "planar-gnomonic" {
	type planar;
	subtype gnomonic;
}

projection "planar-equidistant" {
	type planar;
	subtype equidistant;
	limit 90.0;
}

projection "planar-equalarea" {
	// == Lambert's Azimuthal Equal-Area
	type planar;
	subtype equal-area;
}

projection "cylorthographic0" {
	type cylindrical;
	subtype orthographic;
}

projection "cylorthographic30" {
	type cylindrical;
	subtype orthographic;
	standard-parallels 30;
}

projection "cylorthographic60" {
	type cylindrical;
	subtype orthographic;
	standard-parallels 60;
}

/*
projection "cylindrical-parallel" {
	type cylindrical;
	subtype orthographic;
	standard-parallels 15.0;
}

mercator is shorthand for:
	type cylindrical; subtype parallel;
	standard-parallels 0.0;
peters is shorthand for:
	type cylindrical; subtype parallel;
	standard-parallels 30.0;

projection "cylindrical" {
	type cylindrical;
	subtype gnomonic;
	standard-parallels 0.0;

}
*/

/*****************
 ** Viewports
 */

viewport "vp00" { bottom-left 0 0; size 256 256; scale 128; }
viewport "vp01" { bottom-left 256 0; size 256 256; scale 512; }
viewport "vp02" { bottom-left 512 0; size 256 256; scale 128; }
viewport "vp03" { bottom-left 768 0; size 256 256; scale 128; }
viewport "vp04" { bottom-left 0 256; size 256 256; scale 128; }
viewport "vp05" { bottom-left 256 256; size 256 256; scale 128; }
viewport "vp06" { bottom-left 512 256; size 256 256; scale 128; }
viewport "vp07" { bottom-left 768 256; size 256 256; scale 128; }
viewport "vp08" { bottom-left 0 512; size 256 256; scale 128; }
viewport "vp09" { bottom-left 256 512; size 256 256; scale 128; }
viewport "vp10" { bottom-left 512 512; size 256 256; scale 128; }
viewport "vp11" { bottom-left 768 512; size 256 256; scale 128; }

/*****************
 ** How to put everything together
 */

display {
	viewport "vp00";
	orbit "circular1";
	content "mixedbag";
	projection "planar-equalarea";
}

display {
	viewport "vp01";
	orbit "circular1";
	content "mixedbag";
	projection "planar-stereographic";
}

display {
	viewport "vp02";
	orbit "circular1";
	content "mixedbag";
	projection "planar-gnomonic";
}

display {
	viewport "vp03";
	orbit "circular1";
	content "mixedbag";
	projection "planar-parallel";
}

display {
	viewport "vp04";
	orbit "circular1";
	content "mixedbag";
	projection "planar-equidistant";
}

display {
	viewport "vp05";
	orbit "circular1";
	content "mixedbag";
	projection "cylorthographic0";
}

display {
	viewport "vp06";
	orbit "circular1";
	content "mixedbag";
	projection "cylorthographic30";
}

display {
	viewport "vp07";
	orbit "circular1";
	content "mixedbag";
	projection "cylorthographic60";
}