Changeset 1328 for XIOS/dev/branch_openmp/extern/remap/src/clipper.cpp

Timestamp:

11/15/17 12:14:34 (7 years ago)

Author:

yushan

Message:

dev_omp

File:

• XIOS/dev/branch_openmp/extern/remap/src/clipper.cpp (modified) (1 diff)

XIOS/dev/branch_openmp/extern/remap/src/clipper.cpp

@@ -4274 +4274 @@
 {
   //The equation of a line in general form (Ax + By + C = 0)
-  //given 2 points (x,y) & (x,y) is ...
-  //(y - y)x + (x - x)y + (y - y)x - (x - x)y = 0
-  //A = (y - y); B = (x - x); C = (y - y)x - (x - x)y
-  //perpendicular distance of point (x,y) = (Ax + By + C)/Sqrt(A + B)
+  //given 2 points (x¹,y¹) & (x²,y²) is ...
+  //(y¹ - y²)x + (x² - x¹)y + (y² - y¹)x¹ - (x² - x¹)y¹ = 0
+  //A = (y¹ - y²); B = (x² - x¹); C = (y² - y¹)x¹ - (x² - x¹)y¹
+  //perpendicular distance of point (x³,y³) = (Ax³ + By³ + C)/Sqrt(A² + B²)
   //see http://en.wikipedia.org/wiki/Perpendicular_distance
   double A = double(ln1.Y - ln2.Y);