test_tri_mesh.rb in gmath3D-1.0.0

- old
+ new
@@ -1,186 +1,186 @@
-$LOAD_PATH.unshift(File.dirname(__FILE__))
-require 'helper'
-
-include GMath3D
-
-MiniTest::Unit.autorun
-
-class TriMeshTestCase < MiniTest::Unit::TestCase
-  def get_box_mesh
-    box = Box.new(Vector3.new(-1,-1,-1), Vector3.new(2,3,4))
-    return TriMesh.from_box(box)
-  end
-
-  def get_plane_mesh
-    rect = Rectangle.new(Vector3.new(-1,-1,-1), Vector3.new(2,0,0), Vector3.new(0,4,0) )
-    return TriMesh.from_rectangle(rect)
-  end
-
-  def test_initalize
-    plane_mesh = get_plane_mesh()
-    assert_equal( 2, plane_mesh.tri_indices.size)
-    assert_equal( 4, plane_mesh.vertices.size)
-
-    box_mesh = get_box_mesh()
-    assert_equal( 12, box_mesh.tri_indices.size)
-    assert_equal( 8, box_mesh.vertices.size)
-
-    assert_raises ArgumentError do
-      invalidResult = TriMesh.new(nil)
-    end
-    assert_raises ArgumentError do
-      invalidResult = TriMesh.new(Vector3.new(), 4.0)
-    end
-  end
-
-  def test_equal
-    plane_mesh = get_plane_mesh()
-    assert( plane_mesh != nil )
-    assert( plane_mesh != "String" )
-
-    shallow = plane_mesh
-    assert( shallow == plane_mesh )
-    assert( shallow.equal?(plane_mesh) )
-
-    new_mesh = get_plane_mesh()
-    assert( shallow == new_mesh )
-    assert( !shallow.equal?(new_mesh) )
-  end
-
-  def test_clone
-    plane_mesh = get_plane_mesh()
-    shallow = plane_mesh
-
-    shallow.vertices[0].x = 12
-    shallow.vertices[2] = Vector3.new(-3,2,5)
-    shallow.tri_indices[0] = [3,2,1]
-    shallow.tri_indices[1][2] = 2
-
-    assert_equal( 12, shallow.vertices[0].x )
-    assert_equal( 12, plane_mesh.vertices[0].x )
-    assert_equal( Vector3.new(-3,2,5), shallow.vertices[2] )
-    assert_equal( Vector3.new(-3,2,5), plane_mesh.vertices[2] )
-    assert_equal( [3,2,1], shallow.tri_indices[0] )
-    assert_equal( [3,2,1], plane_mesh.tri_indices[0] )
-    assert_equal( 2, shallow.tri_indices[1][2] )
-    assert_equal( 2, plane_mesh.tri_indices[1][2] )
-
-    deep = plane_mesh.clone
-    assert( deep == plane_mesh )
-    assert( !deep.equal?(plane_mesh) )
-
-    deep.vertices[0].x = -1
-    deep.vertices[2] = Vector3.new(4,2,1)
-    deep.tri_indices[0] = [4,2,2]
-    deep.tri_indices[1][2] = 5
-
-    assert_equal( -1, deep.vertices[0].x )
-    assert_equal( 12, plane_mesh.vertices[0].x )
-    assert_equal( Vector3.new(4,2,1), deep.vertices[2] )
-    assert_equal( Vector3.new(-3,2,5), plane_mesh.vertices[2] )
-    assert_equal( [4,2,2], deep.tri_indices[0] )
-    assert_equal( [3,2,1], plane_mesh.tri_indices[0] )
-    assert_equal( 5, deep.tri_indices[1][2] )
-    assert_equal( 2, plane_mesh.tri_indices[1][2] )
-  end
-
-  def test_to_s
-    assert_equal( "TriMesh[triangle_count:12, vertex_count:8]", get_box_mesh().to_s)
-  end
-
-  def test_box
-    box_mesh = get_box_mesh
-    plane_mesh = get_plane_mesh
-    assert_equal( Vector3.new(-1,-1,-1), box_mesh.box.min_point )
-    assert_equal( Vector3.new( 2, 3, 4), box_mesh.box.max_point )
-    assert_equal( Vector3.new(-1,-1,-1), plane_mesh.box.min_point )
-    assert_equal( Vector3.new( 1, 3,-1), plane_mesh.box.max_point )
-  end
-
-  def test_triangles
-    vertices = [Vector3.new(0,0,0),Vector3.new(2,0,0),Vector3.new(2,2,0),Vector3.new(0,2,0)]
-    tri_indices = [[0,1,3],[1,2,3]]
-    tri_mesh = TriMesh.new(vertices, tri_indices)
-    triangles = tri_mesh.triangles
-    assert_equal(2, triangles.size)
-    assert_equal(Vector3.new(0,0,0), triangles[0].vertices[0])
-    assert_equal(Vector3.new(2,0,0), triangles[0].vertices[1])
-    assert_equal(Vector3.new(0,2,0), triangles[0].vertices[2])
-    assert_equal(Vector3.new(2,0,0), triangles[1].vertices[0])
-    assert_equal(Vector3.new(2,2,0), triangles[1].vertices[1])
-    assert_equal(Vector3.new(0,2,0), triangles[1].vertices[2])
-
-    triangle = tri_mesh.triangle(1)
-    assert_equal(Vector3.new(2,0,0), triangle.vertices[0])
-    assert_equal(Vector3.new(2,2,0), triangle.vertices[1])
-    assert_equal(Vector3.new(0,2,0), triangle.vertices[2])
-
-    triangle = tri_mesh.triangle(3)
-    assert_equal(nil, triangle)
-  end
-
-  def test_from_triangles
-    tris = Array.new(8)
-    tris[0] = Triangle.new( Vector3.new(0,0,0), Vector3.new(1,0,0), Vector3.new(0,1,1) )
-    tris[1] = Triangle.new( Vector3.new(1,0,0), Vector3.new(1,1,1), Vector3.new(0,1,1) )
-    tris[2] = Triangle.new( Vector3.new(1,0,0), Vector3.new(2,0,0), Vector3.new(1,1,1) )
-    tris[3] = Triangle.new( Vector3.new(2,0,0), Vector3.new(2,1,1), Vector3.new(1,1,1) )
-    tris[4] = Triangle.new( Vector3.new(0,1,1), Vector3.new(1,1,1), Vector3.new(0,2,2) )
-    tris[5] = Triangle.new( Vector3.new(1,1,1), Vector3.new(1,2,2), Vector3.new(0,2,2) )
-    tris[6] = Triangle.new( Vector3.new(1,1,1), Vector3.new(2,1,1), Vector3.new(1,2,2) )
-    tris[7] = Triangle.new( Vector3.new(2,1,1), Vector3.new(2,2,2), Vector3.new(1,2,2) )
-    trimesh_from_tris = TriMesh::from_triangles(tris)
-    assert_equal( 9, trimesh_from_tris.vertices.size)
-    assert_equal( 8, trimesh_from_tris.tri_indices.size)
-  end
-
-  def test_from_convex_polyline
-    vertices = Array.new(6)
-    vertices[0] = Vector3.new(1,0,0)
-    vertices[1] = Vector3.new(2,0,0)
-    vertices[2] = Vector3.new(3,1,0)
-    vertices[3] = Vector3.new(2,2,0)
-    vertices[4] = Vector3.new(1,2,0)
-    vertices[5] = Vector3.new(0,1,0)
-    polyline_closed = Polyline.new( vertices, false ) # closed Polyline
-    polyline_open   = Polyline.new( vertices, true  ) # open Polyline
-    trimesh_from_convex_polyline1 = TriMesh.from_convex_polyline( polyline_closed )
-    trimesh_from_convex_polyline2 = TriMesh.from_convex_polyline( polyline_open )
-
-    assert_equal(4, trimesh_from_convex_polyline1.area)
-    assert_equal(4, trimesh_from_convex_polyline2.area)
-  end
-
-  def test_from_extruded_polyline
-    vertices = Array.new(6)
-    vertices[0] = Vector3.new(1,0,0)
-    vertices[1] = Vector3.new(2,0,0)
-    vertices[2] = Vector3.new(3,1,0)
-    vertices[3] = Vector3.new(2,2,0)
-    vertices[4] = Vector3.new(1,2,0)
-    vertices[5] = Vector3.new(0,1,0)
-    polyline_closed = Polyline.new( vertices, false ) # closed Polyline
-    polyline_open   = Polyline.new( vertices, true  ) # open Polyline
-    extrude_direction = Vector3.new(0,0,2)
-    trimesh_from_extruded_polyline1 = TriMesh.from_extrude_polyline( polyline_closed , extrude_direction )
-    trimesh_from_extruded_polyline2 = TriMesh.from_extrude_polyline( polyline_open   , extrude_direction )
-
-    assert_in_delta(4+8*(Math.sqrt(2)), trimesh_from_extruded_polyline1.area, 1e-10)
-    assert_in_delta(4+6*(Math.sqrt(2)), trimesh_from_extruded_polyline2.area, 1e-10)
-  end
-
-  def test_area
-    box_mesh = get_box_mesh()
-    assert_equal(94, box_mesh.area)
-  end
-
-  def test_normals_for_each_vertices
-    box = Box.new(Vector3.new(-1,-1,-1), Vector3.new(1,1,1))
-    box_mesh  = TriMesh.from_box(box)
-    result = box_mesh.normals_for_each_vertices
-    assert_equal( box_mesh.vertices.size, result.size )
-    box_mesh.vertices.each do |vertex|
-      assert_equal(vertex.normalize, result[vertex])
-    end
-  end
-end
+$LOAD_PATH.unshift(File.dirname(__FILE__))
+require 'helper'
+
+include GMath3D
+
+MiniTest::Unit.autorun
+
+class TriMeshTestCase < MiniTest::Unit::TestCase
+  def get_box_mesh
+    box = Box.new(Vector3.new(-1,-1,-1), Vector3.new(2,3,4))
+    return TriMesh.from_box(box)
+  end
+
+  def get_plane_mesh
+    rect = Rectangle.new(Vector3.new(-1,-1,-1), Vector3.new(2,0,0), Vector3.new(0,4,0) )
+    return TriMesh.from_rectangle(rect)
+  end
+
+  def test_initalize
+    plane_mesh = get_plane_mesh()
+    assert_equal( 2, plane_mesh.tri_indices.size)
+    assert_equal( 4, plane_mesh.vertices.size)
+
+    box_mesh = get_box_mesh()
+    assert_equal( 12, box_mesh.tri_indices.size)
+    assert_equal( 8, box_mesh.vertices.size)
+
+    assert_raises ArgumentError do
+      invalidResult = TriMesh.new(nil)
+    end
+    assert_raises ArgumentError do
+      invalidResult = TriMesh.new(Vector3.new(), 4.0)
+    end
+  end
+
+  def test_equal
+    plane_mesh = get_plane_mesh()
+    assert( plane_mesh != nil )
+    assert( plane_mesh != "String" )
+
+    shallow = plane_mesh
+    assert( shallow == plane_mesh )
+    assert( shallow.equal?(plane_mesh) )
+
+    new_mesh = get_plane_mesh()
+    assert( shallow == new_mesh )
+    assert( !shallow.equal?(new_mesh) )
+  end
+
+  def test_clone
+    plane_mesh = get_plane_mesh()
+    shallow = plane_mesh
+
+    shallow.vertices[0].x = 12
+    shallow.vertices[2] = Vector3.new(-3,2,5)
+    shallow.tri_indices[0] = [3,2,1]
+    shallow.tri_indices[1][2] = 2
+
+    assert_equal( 12, shallow.vertices[0].x )
+    assert_equal( 12, plane_mesh.vertices[0].x )
+    assert_equal( Vector3.new(-3,2,5), shallow.vertices[2] )
+    assert_equal( Vector3.new(-3,2,5), plane_mesh.vertices[2] )
+    assert_equal( [3,2,1], shallow.tri_indices[0] )
+    assert_equal( [3,2,1], plane_mesh.tri_indices[0] )
+    assert_equal( 2, shallow.tri_indices[1][2] )
+    assert_equal( 2, plane_mesh.tri_indices[1][2] )
+
+    deep = plane_mesh.clone
+    assert( deep == plane_mesh )
+    assert( !deep.equal?(plane_mesh) )
+
+    deep.vertices[0].x = -1
+    deep.vertices[2] = Vector3.new(4,2,1)
+    deep.tri_indices[0] = [4,2,2]
+    deep.tri_indices[1][2] = 5
+
+    assert_equal( -1, deep.vertices[0].x )
+    assert_equal( 12, plane_mesh.vertices[0].x )
+    assert_equal( Vector3.new(4,2,1), deep.vertices[2] )
+    assert_equal( Vector3.new(-3,2,5), plane_mesh.vertices[2] )
+    assert_equal( [4,2,2], deep.tri_indices[0] )
+    assert_equal( [3,2,1], plane_mesh.tri_indices[0] )
+    assert_equal( 5, deep.tri_indices[1][2] )
+    assert_equal( 2, plane_mesh.tri_indices[1][2] )
+  end
+
+  def test_to_s
+    assert_equal( "TriMesh[triangle_count:12, vertex_count:8]", get_box_mesh().to_s)
+  end
+
+  def test_box
+    box_mesh = get_box_mesh
+    plane_mesh = get_plane_mesh
+    assert_equal( Vector3.new(-1,-1,-1), box_mesh.box.min_point )
+    assert_equal( Vector3.new( 2, 3, 4), box_mesh.box.max_point )
+    assert_equal( Vector3.new(-1,-1,-1), plane_mesh.box.min_point )
+    assert_equal( Vector3.new( 1, 3,-1), plane_mesh.box.max_point )
+  end
+
+  def test_triangles
+    vertices = [Vector3.new(0,0,0),Vector3.new(2,0,0),Vector3.new(2,2,0),Vector3.new(0,2,0)]
+    tri_indices = [[0,1,3],[1,2,3]]
+    tri_mesh = TriMesh.new(vertices, tri_indices)
+    triangles = tri_mesh.triangles
+    assert_equal(2, triangles.size)
+    assert_equal(Vector3.new(0,0,0), triangles[0].vertices[0])
+    assert_equal(Vector3.new(2,0,0), triangles[0].vertices[1])
+    assert_equal(Vector3.new(0,2,0), triangles[0].vertices[2])
+    assert_equal(Vector3.new(2,0,0), triangles[1].vertices[0])
+    assert_equal(Vector3.new(2,2,0), triangles[1].vertices[1])
+    assert_equal(Vector3.new(0,2,0), triangles[1].vertices[2])
+
+    triangle = tri_mesh.triangle(1)
+    assert_equal(Vector3.new(2,0,0), triangle.vertices[0])
+    assert_equal(Vector3.new(2,2,0), triangle.vertices[1])
+    assert_equal(Vector3.new(0,2,0), triangle.vertices[2])
+
+    triangle = tri_mesh.triangle(3)
+    assert_equal(nil, triangle)
+  end
+
+  def test_from_triangles
+    tris = Array.new(8)
+    tris[0] = Triangle.new( Vector3.new(0,0,0), Vector3.new(1,0,0), Vector3.new(0,1,1) )
+    tris[1] = Triangle.new( Vector3.new(1,0,0), Vector3.new(1,1,1), Vector3.new(0,1,1) )
+    tris[2] = Triangle.new( Vector3.new(1,0,0), Vector3.new(2,0,0), Vector3.new(1,1,1) )
+    tris[3] = Triangle.new( Vector3.new(2,0,0), Vector3.new(2,1,1), Vector3.new(1,1,1) )
+    tris[4] = Triangle.new( Vector3.new(0,1,1), Vector3.new(1,1,1), Vector3.new(0,2,2) )
+    tris[5] = Triangle.new( Vector3.new(1,1,1), Vector3.new(1,2,2), Vector3.new(0,2,2) )
+    tris[6] = Triangle.new( Vector3.new(1,1,1), Vector3.new(2,1,1), Vector3.new(1,2,2) )
+    tris[7] = Triangle.new( Vector3.new(2,1,1), Vector3.new(2,2,2), Vector3.new(1,2,2) )
+    trimesh_from_tris = TriMesh::from_triangles(tris)
+    assert_equal( 9, trimesh_from_tris.vertices.size)
+    assert_equal( 8, trimesh_from_tris.tri_indices.size)
+  end
+
+  def test_from_convex_polyline
+    vertices = Array.new(6)
+    vertices[0] = Vector3.new(1,0,0)
+    vertices[1] = Vector3.new(2,0,0)
+    vertices[2] = Vector3.new(3,1,0)
+    vertices[3] = Vector3.new(2,2,0)
+    vertices[4] = Vector3.new(1,2,0)
+    vertices[5] = Vector3.new(0,1,0)
+    polyline_closed = Polyline.new( vertices, false ) # closed Polyline
+    polyline_open   = Polyline.new( vertices, true  ) # open Polyline
+    trimesh_from_convex_polyline1 = TriMesh.from_convex_polyline( polyline_closed )
+    trimesh_from_convex_polyline2 = TriMesh.from_convex_polyline( polyline_open )
+
+    assert_equal(4, trimesh_from_convex_polyline1.area)
+    assert_equal(4, trimesh_from_convex_polyline2.area)
+  end
+
+  def test_from_extruded_polyline
+    vertices = Array.new(6)
+    vertices[0] = Vector3.new(1,0,0)
+    vertices[1] = Vector3.new(2,0,0)
+    vertices[2] = Vector3.new(3,1,0)
+    vertices[3] = Vector3.new(2,2,0)
+    vertices[4] = Vector3.new(1,2,0)
+    vertices[5] = Vector3.new(0,1,0)
+    polyline_closed = Polyline.new( vertices, false ) # closed Polyline
+    polyline_open   = Polyline.new( vertices, true  ) # open Polyline
+    extrude_direction = Vector3.new(0,0,2)
+    trimesh_from_extruded_polyline1 = TriMesh.from_extrude_polyline( polyline_closed , extrude_direction )
+    trimesh_from_extruded_polyline2 = TriMesh.from_extrude_polyline( polyline_open   , extrude_direction )
+
+    assert_in_delta(4+8*(Math.sqrt(2)), trimesh_from_extruded_polyline1.area, 1e-10)
+    assert_in_delta(4+6*(Math.sqrt(2)), trimesh_from_extruded_polyline2.area, 1e-10)
+  end
+
+  def test_area
+    box_mesh = get_box_mesh()
+    assert_equal(94, box_mesh.area)
+  end
+
+  def test_normals_for_each_vertices
+    box = Box.new(Vector3.new(-1,-1,-1), Vector3.new(1,1,1))
+    box_mesh  = TriMesh.from_box(box)
+    result = box_mesh.normals_for_each_vertices
+    assert_equal( box_mesh.vertices.size, result.size )
+    box_mesh.vertices.each do |vertex|
+      assert_equal(vertex.normalize, result[vertex])
+    end
+  end
+end