Ticket #472: 472_test.patch

source/graphics/tests/test_Terrain.h

@@ -22 +22 @@
 #include "graphics/Patch.h"
 #include "graphics/RenderableObject.h"
 #include "maths/FixedVector3D.h"
+#include "maths/Fixed.h"
 
 class TestTerrain : public CxxTest::TestSuite
 {
@@ -53 +54 @@
 
     }
 
+    void SetHighPlateau(CTerrain& terrain, int height)
+    {
+        SetVertex(terrain, 4, 0, 100 +height*CELL_SIZE*HEIGHT_UNITS_PER_METRE);
+        SetVertex(terrain, 4, 1, 100 +height*CELL_SIZE*HEIGHT_UNITS_PER_METRE);
+        SetVertex(terrain, 4, 2, 100 +height*CELL_SIZE*HEIGHT_UNITS_PER_METRE);
+        SetVertex(terrain, 5, 0, 100 +height*CELL_SIZE*HEIGHT_UNITS_PER_METRE);
+        SetVertex(terrain, 5, 1, 100 +height*CELL_SIZE*HEIGHT_UNITS_PER_METRE);
+        SetVertex(terrain, 5, 2, 100 +height*CELL_SIZE*HEIGHT_UNITS_PER_METRE);
+    }
+
 public:
+    void test_GetExactGroundLevel()
+    {
+        CTerrain terrain;
+        terrain.Initialize(6, NULL);
+        Set45Slope(terrain);
+        SetHighPlateau(terrain, 20);
+
+        float ground;
+
+        ground = terrain.GetExactGroundLevel(0.f, 1.5f*CELL_SIZE);
+        TS_ASSERT_DELTA(ground, 100.f/HEIGHT_UNITS_PER_METRE, 0.01f);
+
+        ground = terrain.GetExactGroundLevel(0.5f*CELL_SIZE, 1.5f*CELL_SIZE);
+        TS_ASSERT_DELTA(ground, 100.f/HEIGHT_UNITS_PER_METRE+0.5f*CELL_SIZE, 0.01f);
+
+        ground = terrain.GetExactGroundLevel(1.5f*CELL_SIZE, 1.5f*CELL_SIZE);
+        TS_ASSERT_DELTA(ground, 100.f/HEIGHT_UNITS_PER_METRE+1.5f*CELL_SIZE, 0.01f);
+
+        ground = terrain.GetExactGroundLevel(2.5f*CELL_SIZE, 1.5f*CELL_SIZE);
+        TS_ASSERT_DELTA(ground, 100.f/HEIGHT_UNITS_PER_METRE+2.f*CELL_SIZE, 0.01f);
+
+        ground = terrain.GetExactGroundLevel(3.5f*CELL_SIZE, 1.5f*CELL_SIZE);
+        TS_ASSERT_DELTA(ground, 100.f/HEIGHT_UNITS_PER_METRE+11.f*CELL_SIZE, 0.01f);
+
+        ground = terrain.GetExactGroundLevel(4.5f*CELL_SIZE, 1.5f*CELL_SIZE);
+        TS_ASSERT_DELTA(ground, 100.f/HEIGHT_UNITS_PER_METRE+20.f*CELL_SIZE, 0.01f);
+    }
+
+    void test_GetExactGroundLevelFixed()
+    {
+        CTerrain terrain;
+        terrain.Initialize(4, NULL);
+        Set45Slope(terrain);
+        SetHighPlateau(terrain, 20);
+
+        CFixed_23_8 ground;
+
+        ground = terrain.GetExactGroundLevelFixed(CFixed_23_8::FromFloat(0.f), CFixed_23_8::FromFloat(1.5f*CELL_SIZE));
+        TS_ASSERT_DELTA(ground.ToFloat(), 100.f/HEIGHT_UNITS_PER_METRE, 0.01f);
+
+        ground = terrain.GetExactGroundLevelFixed(CFixed_23_8::FromFloat(0.5f*CELL_SIZE), CFixed_23_8::FromFloat(1.5f*CELL_SIZE));
+        TS_ASSERT_DELTA(ground.ToFloat(), 100.f/HEIGHT_UNITS_PER_METRE+0.5f*CELL_SIZE, 0.01f);
+
+        ground = terrain.GetExactGroundLevelFixed(CFixed_23_8::FromFloat(1.5f*CELL_SIZE), CFixed_23_8::FromFloat(1.5f*CELL_SIZE));
+        TS_ASSERT_DELTA(ground.ToFloat(), 100.f/HEIGHT_UNITS_PER_METRE+1.5f*CELL_SIZE, 0.01f);
+
+        ground = terrain.GetExactGroundLevelFixed(CFixed_23_8::FromFloat(2.5f*CELL_SIZE), CFixed_23_8::FromFloat(1.5f*CELL_SIZE));
+        TS_ASSERT_DELTA(ground.ToFloat(), 100.f/HEIGHT_UNITS_PER_METRE+2.f*CELL_SIZE, 0.01f);
+
+        ground = terrain.GetExactGroundLevelFixed(CFixed_23_8::FromFloat(3.5f*CELL_SIZE), CFixed_23_8::FromFloat(1.5f*CELL_SIZE));
+        TS_ASSERT_DELTA(ground.ToFloat(), 100.f/HEIGHT_UNITS_PER_METRE+11.f*CELL_SIZE, 0.01f);
+
+        ground = terrain.GetExactGroundLevelFixed(CFixed_23_8::FromFloat(4.5f*CELL_SIZE), CFixed_23_8::FromFloat(1.5f*CELL_SIZE));
+        TS_ASSERT_DELTA(ground.ToFloat(), 100.f/HEIGHT_UNITS_PER_METRE+20.f*CELL_SIZE, 0.01f);
+    }
+
     void test_CalcNormal()
     {
         CTerrain terrain;