public void CrtMeshBuilderFunctions_GenerateApproximateSphereAtUnitRadius_TestSimple90DegreeAzimuthAndInclination()
{
//Covers the centre one quarter of one side of a sphere
ICrtMeshBuilderFunctions functions = new CrtMeshBuilderFunctions();
var verts = functions.GenerateSphereSurfacePatchAtUnitRadiusWithExtraVertexOverhangForNormalCalculation(1.0f,
3,
0.25f * (float)Math.PI,
0.25f * (float)Math.PI,
0.0f);
var ort = 0.70710678118f; // 1/sqrt(2)
var centre = verts[12];
var cpos = centre.Position;
var ctex = centre.TexCoord;
Assert.Equal(1.0f, cpos.Z, 3);
Assert.Equal(0.0f, cpos.X, 3);
Assert.Equal(0.0f, cpos.Y, 3);
Assert.Equal(0.5f, ctex.X, 3);
Assert.Equal(0.5f, ctex.Y, 3);
var topleft = verts[6];
var tpos = topleft.Position;
var ttex = topleft.TexCoord;
Assert.Equal(0.5f, tpos.Z, 3);
Assert.Equal(-0.5f, tpos.X, 3);
Assert.Equal(ort, tpos.Y, 3);
Assert.Equal(0.0f, ttex.X, 3);
Assert.Equal(0.0f, ttex.Y, 3);
var bottomright = verts[18];
var bpos = bottomright.Position;
var btex = bottomright.TexCoord;
Assert.Equal(0.5f, bpos.Z, 3);
Assert.Equal(0.5f, bpos.X, 3);
Assert.Equal(-ort, bpos.Y, 3);
Assert.Equal(1.0f, btex.X, 3);
Assert.Equal(1.0f, btex.Y, 3);
}
public void CrtMeshBuilderFunctions_GenerateApproximateSphereAtUnitRadius_TestSimple180DegreeAzimuthAndInclination()
{
//Basically creates have a sphere covered, so top and bottom verts are all at the poles
ICrtMeshBuilderFunctions functions = new CrtMeshBuilderFunctions();
var verts = functions.GenerateSphereSurfacePatchAtUnitRadiusWithExtraVertexOverhangForNormalCalculation(1.0f,
3,
0.5f * (float)Math.PI,
0.5f * (float)Math.PI,
0.0f);
var centre = verts[12];
var cpos = centre.Position;
var ctex = centre.TexCoord;
Assert.Equal(1.0f, cpos.Z, 3);
Assert.Equal(0.0f, cpos.X, 3);
Assert.Equal(0.0f, cpos.Y, 3);
Assert.Equal(0.5f, ctex.X, 3);
Assert.Equal(0.5f, ctex.Y, 3);
var topleft = verts[6];
var tpos = topleft.Position;
var ttex = topleft.TexCoord;
Assert.Equal(0.0f, tpos.Z, 3);
Assert.Equal(0.0f, tpos.X, 3);
Assert.Equal(1.0f, tpos.Y, 3);
Assert.Equal(0.0f, ttex.X, 3);
Assert.Equal(0.0f, ttex.Y, 3);
var bottomright = verts[18];
var bpos = bottomright.Position;
var btex = bottomright.TexCoord;
Assert.Equal(0.0f, bpos.Z, 3);
Assert.Equal(0.0f, bpos.X, 3);
Assert.Equal(-1.0f, bpos.Y, 3);
Assert.Equal(1.0f, btex.X, 3);
Assert.Equal(1.0f, btex.Y, 3);
}
public void CrtMeshBuilderFunctions_GenerateApproximateSphereAtUnitRadius_TestSimpleCornerRounding()
{
//Covers the centre one quarter of one side of a sphere
ICrtMeshBuilderFunctions functions = new CrtMeshBuilderFunctions();
var verts = functions.GenerateSphereSurfacePatchAtUnitRadiusWithExtraVertexOverhangForNormalCalculation(1.0f,
4,
0.25f * (float)Math.PI,
0.25f * (float)Math.PI,
1.0f);
/*
*
* 0 1 2 3
* 4 5 6 7
* 8 9 10 11
* 12 13 14 15
*
* 4 and 11 should be half way along corner radii
*
*/
var ort = 0.70710678118f; // 1/sqrt(2)
var topleft = verts[8];
var tpos = topleft.Position;
var ttex = topleft.TexCoord;
Assert.Equal(ort, tpos.Z, 3);
Assert.Equal(0.0f, tpos.X, 3);
Assert.Equal(0.707106f, tpos.Y, 3);
Assert.Equal(0.5f, ttex.X, 3);
Assert.Equal(0.0f, ttex.Y, 3);
var bottomright = verts[28];
var bpos = bottomright.Position;
var btex = bottomright.TexCoord;
Assert.Equal(ort, bpos.Z, 3);
Assert.Equal(0.0f, bpos.X, 3);
Assert.Equal(-0.707106f, bpos.Y, 3);
Assert.Equal(0.5f, btex.X, 3);
Assert.Equal(1.0f, btex.Y, 3);
var leftthird = verts[13];
var lpos = leftthird.Position;
var ltex = leftthird.TexCoord;
Assert.Equal(0.712992f, lpos.Z, 3);
Assert.Equal(-0.651654f, lpos.X, 3);
Assert.Equal(0.25881f, lpos.Y, 3);
Assert.Equal(0.0285954f, ltex.X, 3);
Assert.Equal(0.333f, ltex.Y, 3);
var rightlastthird = verts[22];
var rpos = rightlastthird.Position;
var rtex = rightlastthird.TexCoord;
Assert.Equal(0.712992f, rpos.Z, 3);
Assert.Equal(0.651654f, rpos.X, 3);
Assert.Equal(-0.25881f, rpos.Y, 3);
Assert.Equal(0.97140f, rtex.X, 3);
Assert.Equal(0.6666f, rtex.Y, 3);
}
