X-Git-Url: http://git.treefish.org/~alex/seamulator.git/blobdiff_plain/ce5cb9e3b065ec3eabd2ffa79923043fdfb2087a..40fe15ee6190427f3bbc5db4ff640442626cc3bb:/src/watersurface.cpp

diff --git a/src/watersurface.cpp b/src/watersurface.cpp
new file mode 100644
index 0000000..a38ad57
--- /dev/null
+++ b/src/watersurface.cpp
@@ -0,0 +1,59 @@
+#include "watersurface.h"
+
+#include <GL/glut.h>
+
+WaterSurface::WaterSurface(int size, double extend) :
+  m_size{size},
+  m_extend{extend}
+{
+  m_points.resize(size*size);
+}
+
+SurfacePoint& WaterSurface::at(int x, int y)
+{
+  return m_points.at(x + m_size*y);
+}
+
+const SurfacePoint& WaterSurface::at(int x, int y) const
+{
+  return m_points.at(x + m_size*y);
+}
+
+int WaterSurface::size() const
+{
+  return m_size;
+}
+
+double WaterSurface::extend() const
+{
+  return m_extend;
+}
+
+void WaterSurface::draw() const
+{
+  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) {
+    for (int x = 0; x < m_size - 1; ++x) {
+      drawSingleTile(x, y);
+    }
+  }
+}
+
+void WaterSurface::drawSingleTile(int x, int y) const
+{
+  glBegin(GL_TRIANGLES);
+
+  glVertex3f(x, y, at(x, y).getHeight());
+  glVertex3f(x+1, y, at(x+1, y).getHeight());
+  glVertex3f(x+1, y+1, at(x+1, y+1).getHeight());
+
+  glVertex3f(x, y, at(x, y).getHeight());
+  glVertex3f(x, y+1, at(x, y+1).getHeight());
+  glVertex3f(x+1, y+1, at(x+1, y+1).getHeight());
+
+  glEnd();
+}