public Vector2 ToWorld(Vector2 screenPoint, float parallax = 1)
{
/*
Vector2 shift = new Vector2(_origin.X * scrWidth, _origin.Y * scrHeight);
screenPoint.X -= shift.X;
screenPoint.Y -= shift.Y;
screenPoint = Vector2.Transform(screenPoint, Quaternion.FromAxisAngle(Vector3.UnitZ, -_rotation));//Vector3.Transform(new Vector3(screenPoint), Matrix4.CreateRotationZ(-_rotation)).Xy;
screenPoint /= _scale;
//screenPoint.X += shift.X;
//screenPoint.Y += shift.Y;
screenPoint.X += _position.X * parallax;
screenPoint.Y += _position.Y * parallax;
*/
return screenPoint.Transform(Matrix4.Invert(GetViewMatrix(parallax)));
//return screenPoint;
}
private void DrawInternal(
Texture2D texture,
Vector2 destination,
int width,
int height,
Rectangle? source,
Color4? tint,
Vector2? origin,
Vector2? scale,
float rotation,
float layerDepth)
{
this.EnsureDrawInProgress();
if (texture == null)
throw new ArgumentNullException("texture");
if (texture != this.texture)
this.Flush();
this.texture = texture;
if (source == null)
source = new Rectangle(0, 0, texture.Width, texture.Height);
if (tint == null)
tint = Color4.White;
if (origin == null)
origin = Vector2.Zero;
if (scale == null)
scale = Vector2.One;
Vector2 topLeft = new Vector2(-origin.Value.X, -origin.Value.Y);
Vector2 topRight = new Vector2(width - origin.Value.X, -origin.Value.Y);
Vector2 bottomRight = new Vector2(width - origin.Value.X, height - origin.Value.Y);
Vector2 bottomLeft = new Vector2(-origin.Value.X, height - origin.Value.Y);
Matrix4 rotationMatrix;
Matrix4.CreateRotationZ(rotation, out rotationMatrix);
Matrix4 scaleMatrix;
Matrix4.CreateScale(scale.Value.X, scale.Value.Y, 1.0f, out scaleMatrix);
Matrix4 translationMatrix;
Matrix4.CreateTranslation(destination.X, destination.Y, out translationMatrix);
Matrix4 identity = Matrix4.Identity;
Matrix4 transform1;
Matrix4.Multiply(ref identity, ref scaleMatrix, out transform1);
Matrix4 transform2;
Matrix4.Multiply(ref transform1, ref rotationMatrix, out transform2);
Matrix4 transform3;
Matrix4.Multiply(ref transform2, ref translationMatrix, out transform3);
topLeft = topLeft.Transform(ref transform3);
topRight = topRight.Transform(ref transform3);
bottomRight = bottomRight.Transform(ref transform3);
bottomLeft = bottomLeft.Transform(ref transform3);
this.AddQuad(
ref topLeft,
ref topRight,
ref bottomRight,
ref bottomLeft,
source.Value,
tint.Value,
layerDepth);
}
public Vector2 ToScreen(Vector2 worldPoint, float parallax = 1)
{
/*
Vector2 shift = new Vector2(_origin.X * scrWidth, _origin.Y * scrHeight);
worldPoint.X -= _position.X * parallax;
worldPoint.Y -= _position.Y * parallax;
//worldPoint.X -= shift.X;
//worldPoint.Y -= shift.Y;
worldPoint = Vector2.Transform(worldPoint, Quaternion.FromAxisAngle(Vector3.UnitZ, -_rotation));
worldPoint *= _scale;
worldPoint.X += shift.X;
worldPoint.Y += shift.Y;
*/
return worldPoint.Transform(GetViewMatrix(parallax));
//return worldPoint;
}
