Fix index function in IsoRingBuilder (fix #18)

mthh · mthh · commit 1b98ecf16d67 · 2024-04-30T14:46:07.000+02:00
This fix follows erronous change made in b32d16b will trying toi fix #12.
diff --git a/src/isoringbuilder.rs b/src/isoringbuilder.rs
@@ -166,7 +166,7 @@ impl IsoRingBuilder {
     }
 
     fn index(&self, point: &Pt) -> usize {
-        (point.x as usize) * 2 + (point.y as usize) * (self.dx + 1usize) * 4
+        (point.x as f64 * 2.0 + point.y as f64 * ((self.dx + 1) * 4) as f64) as usize
     }
 
     // Stitchs segments to rings.

Original file line number	Diff line number	Diff line change
`@@ -166,7 +166,7 @@ impl IsoRingBuilder {`
`166`	`166`	`}`
`167`	`167`
`168`	`168`	`fn index(&self, point: &Pt) -> usize {`
`169`		`- (point.x as usize) * 2 + (point.y as usize) * (self.dx + 1usize) * 4`
	`169`	`+ (point.x as f64 * 2.0 + point.y as f64 * ((self.dx + 1) * 4) as f64) as usize`
`170`	`170`	`}`
`171`	`171`
`172`	`172`	`// Stitchs segments to rings.`