/// <summary>
/// Apply properties in text box to currently selected object.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void b_ApplyProperties_Click(object sender, EventArgs e)
{
// apply these new settings
if (currentlySelectedObject != null && AreObjPropertiesValid())
{
float newScale = float.Parse(tb_Scale.Text);
currentlySelectedObject.Width = (currentlySelectedObject.Width / currentlySelectedObject.scale) * newScale;
if ((currentlySelectedObject is InstasteelCircleObject || (currentlySelectedObject is CircleObject && !(currentlySelectedObject is PaintedObject))))
{
currentlySelectedObject.Height = currentlySelectedObject.Width;
float radius = (float)currentlySelectedObject.Width / (2 * CASSWorld.SCALE);
// circle objects only
currentlySelectedObject.RemoveFromWorld();
CircleDef shape = new CircleDef();
shape.Radius = radius;
// HACK HACK HACK - this won't work for objects that have more than one shape!
shape.Density = currentlySelectedObject.shapes[0].Density;
shape.Friction = currentlySelectedObject.shapes[0].Friction;
shape.Restitution = currentlySelectedObject.shapes[0].Restitution;
currentlySelectedObject.shapes.Clear(); // get rid of the old, unscaled shape
currentlySelectedObject.shapes.Add(shape); // add the new one
currentlySelectedObject.AddToWorld();
}
else if (currentlySelectedObject.TextureFilename == "Art\\Objects\\BoxObjects\\bottomTexture2273")
{
float halfWidth = (float)currentlySelectedObject.Width / (2 * CASSWorld.SCALE);
float halfHeight = (float)currentlySelectedObject.Height / (2 * CASSWorld.SCALE);
// box object only...
currentlySelectedObject.RemoveFromWorld();
// Create the collision shape
PolygonDef shape = new PolygonDef();
shape.SetAsBox(halfWidth, halfHeight);
// HACK HACK HACK - this won't work for objects that have more than one shape!
shape.Density = currentlySelectedObject.shapes[0].Density;
shape.Friction = currentlySelectedObject.shapes[0].Friction;
shape.Restitution = currentlySelectedObject.shapes[0].Restitution;
currentlySelectedObject.shapes.Clear(); // get rid of the old, unscaled shape
currentlySelectedObject.shapes.Add(shape); // add the new one
currentlySelectedObject.AddToWorld();
}
else if (currentlySelectedObject is InstasteelObject || !(currentlySelectedObject is PaintedObject))
{
currentlySelectedObject.Height = (currentlySelectedObject.Height / currentlySelectedObject.scale) * newScale;
// Determine dimensions
float halfWidth = (float)currentlySelectedObject.Width / (2 * CASSWorld.SCALE);
float halfHeight = (float)currentlySelectedObject.Height / (2 * CASSWorld.SCALE);
// box object only...
currentlySelectedObject.RemoveFromWorld();
// Create the collision shape
PolygonDef shape = new PolygonDef();
shape.SetAsBox(halfWidth, halfHeight);
// HACK HACK HACK - this won't work for objects that have more than one shape!
shape.Density = currentlySelectedObject.shapes[0].Density;
shape.Friction = currentlySelectedObject.shapes[0].Friction;
shape.Restitution = currentlySelectedObject.shapes[0].Restitution;
currentlySelectedObject.shapes.Clear(); // get rid of the old, unscaled shape
currentlySelectedObject.shapes.Add(shape); // add the new one
currentlySelectedObject.AddToWorld();
}
if ((bool)cBox_StaticObject.Checked)
{
MassData mass = new MassData();
mass.Mass = 0f;
currentlySelectedObject.Body.SetMass(mass);
}
else if (currentlySelectedObject.Body.GetMass()==0)
{
MassData mass = new MassData();
mass.Mass = 1f;
currentlySelectedObject.Body.SetMass(mass);
currentlySelectedObject.Body.GetShapeList().Density = 1f;
currentlySelectedObject.Body.SetMassFromShapes();
}
float newRotation = float.Parse(tb_Rotation.Text);
currentlySelectedObject.Angle = MathHelper.ToRadians(newRotation);
currentlySelectedObject.scale = newScale;
float newbound1 = float.Parse(tb_bound1.Text);
float newbound2 = float.Parse(tb_bound2.Text);
if (currentlySelectedObject is MovingObject)
{
MovingObject temp = (MovingObject)currentlySelectedObject;
temp.bound1 = temp.Position.Y - newbound1;
temp.bound2 = temp.Position.Y + newbound2;
Console.WriteLine(temp.bound1 + " " + temp.bound2);
currentlySelectedObject = temp;
}
else if (currentlySelectedObject is HorizontalMovingObject)
{
HorizontalMovingObject temp = (HorizontalMovingObject)currentlySelectedObject;
temp.bound1 = temp.Position.X - newbound1;
temp.bound2 = temp.Position.X + newbound2;
currentlySelectedObject = temp;
}
}
pb_Level.Refresh();
}
internal PolygonShape(ShapeDef def)
: base(def)
{
Box2DXDebug.Assert(def.Type == ShapeType.PolygonShape);
_type = ShapeType.PolygonShape;
PolygonDef poly = (PolygonDef)def;
// Get the vertices transformed into the body frame.
_vertexCount = poly.VertexCount;
Box2DXDebug.Assert(3 <= _vertexCount && _vertexCount <= Settings.MaxPolygonVertices);
// Copy vertices.
for (int i = 0; i < _vertexCount; ++i)
{
_vertices[i] = poly.Vertices[i];
}
// Compute normals. Ensure the edges have non-zero length.
for (int i = 0; i < _vertexCount; ++i)
{
int i1 = i;
int i2 = i + 1 < _vertexCount ? i + 1 : 0;
Vec2 edge = _vertices[i2] - _vertices[i1];
Box2DXDebug.Assert(edge.LengthSquared() > Common.Settings.FLT_EPSILON * Common.Settings.FLT_EPSILON);
_normals[i] = Vec2.Cross(edge, 1.0f);
_normals[i].Normalize();
}
#if DEBUG
// Ensure the polygon is convex.
for (int i = 0; i < _vertexCount; ++i)
{
for (int j = 0; j < _vertexCount; ++j)
{
// Don't check vertices on the current edge.
if (j == i || j == (i + 1) % _vertexCount)
{
continue;
}
// Your polygon is non-convex (it has an indentation).
// Or your polygon is too skinny.
float s = Vec2.Dot(_normals[i], _vertices[j] - _vertices[i]);
Box2DXDebug.Assert(s < -Settings.LinearSlop);
}
}
// Ensure the polygon is counter-clockwise.
for (int i = 1; i < _vertexCount; ++i)
{
float cross = Vec2.Cross(_normals[i - 1], _normals[i]);
// Keep asinf happy.
cross = Common.Math.Clamp(cross, -1.0f, 1.0f);
// You have consecutive edges that are almost parallel on your polygon.
float angle = (float)System.Math.Asin(cross);
Box2DXDebug.Assert(angle > Settings.AngularSlop);
}
#endif
// Compute the polygon centroid.
_centroid = ComputeCentroid(poly.Vertices, poly.VertexCount);
// Compute the oriented bounding box.
ComputeOBB(out _obb, _vertices, _vertexCount);
// Create core polygon shape by shifting edges inward.
// Also compute the min/max radius for CCD.
for (int i = 0; i < _vertexCount; ++i)
{
int i1 = i - 1 >= 0 ? i - 1 : _vertexCount - 1;
int i2 = i;
Vec2 n1 = _normals[i1];
Vec2 n2 = _normals[i2];
Vec2 v = _vertices[i] - _centroid;;
Vec2 d = new Vec2();
d.X = Vec2.Dot(n1, v) - Settings.ToiSlop;
d.Y = Vec2.Dot(n2, v) - Settings.ToiSlop;
// Shifting the edge inward by b2_toiSlop should
// not cause the plane to pass the centroid.
// Your shape has a radius/extent less than b2_toiSlop.
Box2DXDebug.Assert(d.X >= 0.0f);
Box2DXDebug.Assert(d.Y >= 0.0f);
Mat22 A = new Mat22();
A.Col1.X = n1.X; A.Col2.X = n1.Y;
A.Col1.Y = n2.X; A.Col2.Y = n2.Y;
_coreVertices[i] = A.Solve(d) + _centroid;
}
}
internal PolygonShape(ShapeDef def) : base(def)
{
Box2DXDebug.Assert(def.Type == ShapeType.PolygonShape);
this._type = ShapeType.PolygonShape;
PolygonDef polygonDef = (PolygonDef)def;
this._vertexCount = polygonDef.VertexCount;
Box2DXDebug.Assert(3 <= this._vertexCount && this._vertexCount <= Settings.MaxPolygonVertices);
for (int i = 0; i < this._vertexCount; i++)
{
this._vertices[i] = polygonDef.Vertices[i];
}
for (int i = 0; i < this._vertexCount; i++)
{
int num = i;
int num2 = (i + 1 < this._vertexCount) ? (i + 1) : 0;
Vec2 a = this._vertices[num2] - this._vertices[num];
Box2DXDebug.Assert(a.LengthSquared() > Settings.FLT_EPSILON * Settings.FLT_EPSILON);
this._normals[i] = Vec2.Cross(a, 1f);
this._normals[i].Normalize();
}
for (int i = 0; i < this._vertexCount; i++)
{
for (int j = 0; j < this._vertexCount; j++)
{
if (j != i && j != (i + 1) % this._vertexCount)
{
float num3 = Vec2.Dot(this._normals[i], this._vertices[j] - this._vertices[i]);
Box2DXDebug.Assert(num3 < -Settings.LinearSlop);
}
}
}
for (int i = 1; i < this._vertexCount; i++)
{
float num4 = Vec2.Cross(this._normals[i - 1], this._normals[i]);
num4 = Box2DX.Common.Math.Clamp(num4, -1f, 1f);
float num5 = (float)System.Math.Asin((double)num4);
Box2DXDebug.Assert(num5 > Settings.AngularSlop);
}
this._centroid = PolygonShape.ComputeCentroid(polygonDef.Vertices, polygonDef.VertexCount);
PolygonShape.ComputeOBB(out this._obb, this._vertices, this._vertexCount);
for (int i = 0; i < this._vertexCount; i++)
{
int num = (i - 1 >= 0) ? (i - 1) : (this._vertexCount - 1);
int num2 = i;
Vec2 a2 = this._normals[num];
Vec2 a3 = this._normals[num2];
Vec2 b = this._vertices[i] - this._centroid;
Vec2 b2 = default(Vec2);
b2.X = Vec2.Dot(a2, b) - Settings.ToiSlop;
b2.Y = Vec2.Dot(a3, b) - Settings.ToiSlop;
Box2DXDebug.Assert(b2.X >= 0f);
Box2DXDebug.Assert(b2.Y >= 0f);
Mat22 mat = default(Mat22);
mat.Col1.X = a2.X;
mat.Col2.X = a2.Y;
mat.Col1.Y = a3.X;
mat.Col2.Y = a3.Y;
this._coreVertices[i] = mat.Solve(b2) + this._centroid;
}
}
