X-Git-Url: http://git.treefish.org/~alex/seamulator.git/blobdiff_plain/3a3ad62faa958b07f2a91b4b21e6cfa92309ba80..f2e44f70d56b60e6eef78656ca4b558917474276:/watersurface.cpp

diff --git a/watersurface.cpp b/watersurface.cpp
index 930cf7f..a38ad57 100644
--- a/watersurface.cpp
+++ b/watersurface.cpp
@@ -2,9 +2,9 @@
 
 #include <GL/glut.h>
 
-WaterSurface::WaterSurface(int size, double unitLength) :
+WaterSurface::WaterSurface(int size, double extend) :
   m_size{size},
-  m_unitLength{unitLength}
+  m_extend{extend}
 {
   m_points.resize(size*size);
 }
@@ -24,9 +24,16 @@ int WaterSurface::size() const
   return m_size;
 }
 
+double WaterSurface::extend() const
+{
+  return m_extend;
+}
+
 void WaterSurface::draw() const
 {
-  glScalef(m_unitLength, m_unitLength, 1.0f);
+  const double scaleFactor{m_extend / m_size};
+
+  glScalef(scaleFactor, scaleFactor, 1.0f);
   glTranslatef(-(float)(m_size - 1) / 2, -(float)(m_size - 1) / 2, 0);
 
   for (int y = 0; y < m_size - 1; ++y) {