Make SVG coordinates positive

src/input.rs

@@ -69,6 +69,10 @@ fn read_stdin() -> InputData {
 fn read_svg(input: &str) -> Result<InputData, Box<Error>> {
 	let svg = Document::from_str(input)?;
 	let svg = svg.svg_element().unwrap();
+	let svg_height = match svg.attributes().get_value(AttributeId::Height).unwrap() {
+		AttributeValue::Length(l) => l.num as f32,
+		_ => -42.0
+	};
 	let mut house = None;
 	let mut polys = Vec::new();
 	for (id, node) in svg.descendants().svg() {
@@ -85,13 +89,13 @@ fn read_svg(input: &str) -> Result<InputData, Box<Error>> {
 				for p in &path.0 {
 					match p {
 						PathSegment::MoveTo { x, y, .. } => {
-							points.push(Point::new(*x as f32, -*y as f32));
+							points.push(Point::new(*x as f32, svg_height-*y as f32));
 						}
 						PathSegment::LineTo { x, y, .. } => {
-							points.push(Point::new(*x as f32, -*y as f32));
+							points.push(Point::new(*x as f32, svg_height-*y as f32));
 						}
 						PathSegment::VerticalLineTo { y, .. } => {
-							points.push(Point::new(points.last().unwrap().x(), -*y as f32));
+							points.push(Point::new(points.last().unwrap().x(), svg_height-*y as f32));
 						}
 						PathSegment::HorizontalLineTo { x, .. } => {
 							points.push(Point::new(*x as f32, points.last().unwrap().y()));

src/main.rs

@@ -234,7 +234,7 @@ fn main() {
 	if opt.debug {
 		// Performanz-Schätzung anzeigen
 		eprintln!(
-			"DEBUG: {}μs/Iteration mit {} Iterationen",
+			"DEBUG: {}us/Iteration mit {} Iterationen",
 			total_time.as_micros() / iterations,
 			iterations
 		);