protected void SelectAxis(Axis axis, SceneMouseEventArgs args = null)
{
selectedAxis = axis;
if (args != null)
{
_registrationScreenspace = args.ScreenCoordinates;
}
var colours = GetColours();
using (_batch.Begin())
{
_batch.BindBuffer(BufferTarget.ArrayBuffer, _batch.BufferIdents[1]);
_batch.BufferVertexAttributeData(colours, BufferUsageHint.StaticDraw);
}
}
protected override void Transform(SceneMouseEventArgs args)
{
if (selectedAxis == Axis.None)
{
return;
}
var camera = args.Camera;
var originScreenspace = camera.Project(position);
var axisNormal = GetAxisNormal(selectedAxis);
var translation_screenspace = CalculateScreenspaceTranslation(originScreenspace,
camera.Project(position + axisNormal), args.ScreenCoordinates);
var near = camera.UnProject(originScreenspace + translation_screenspace);
var far = camera.UnProject(originScreenspace + translation_screenspace, -0.01f);
var mouseRay = new Ray(near, far);
// Setup and select the collision plane
var normal = FindPlaneNormal(mouseRay.Direction, axisNormal);
// Produce the plane-distance from origin from this objects position vector
var planeOffset = Vector3.Dot(normal, position);
// We use negetive offset here
var translationPlane = new Plane(normal, -planeOffset);
float?distance;
if (!translationPlane.Intersects(mouseRay, out distance))
{
return;
}
var mouseVector = mouseRay.Origin + mouseRay.Direction * distance.GetValueOrDefault();
var mouseProjectionLength = Vector3.Dot(axisNormal, mouseVector);
var positionProjectionLength = Vector3.Dot(axisNormal, position);
var translationProjectionLength = (mouseProjectionLength - positionProjectionLength);
var vector = (translationProjectionLength * axisNormal);
if (!(vector.Length > 0))
{
return;
}
SetTranslation(vector);
}
protected override void Transform(SceneMouseEventArgs args)
{
if (selectedAxis == Axis.None)
{
return;
}
var camera = args.Camera;
var originScreenspace = camera.Project(position);
var axisNormal = GetAxisNormal(selectedAxis);
var normalScreenspace = camera.Project(position + axisNormal).Normalized();
var translation = CalculateScreenspaceTranslation(originScreenspace,
camera.Project(position + axisNormal), args.ScreenCoordinates);
SetTransform(Vector2.Dot(translation, normalScreenspace));
}
public void OnMouseCaptureChanged(object sender, SceneMouseEventArgs e)
{
MouseCaptureChanged?.Invoke(sender, e);
}
public void OnMouseClick(object sender, SceneMouseEventArgs e)
{
MouseClick?.Invoke(sender, e);
}
public void OnMouseDown(object sender, SceneMouseEventArgs e)
{
MouseDown?.Invoke(sender, e);
}
protected override void Transform(SceneMouseEventArgs args)
{
if (selectedAxis == Axis.None)
{
return;
}
var camera = args.Camera;
var originScreenspace = camera.Project(_pivot);
var axisNormal = GetAxisNormal(selectedAxis);
var translation_screenspace = CalculateScreenspaceTranslation(originScreenspace,
camera.Project(position + axisNormal), args.ScreenCoordinates);
var near = camera.UnProject(args.ScreenCoordinates);
var far = camera.UnProject(args.ScreenCoordinates, -0.01f);
var mouseRay = new Ray(near, far);
// Setup and select the collision plane
var normal = Vector3.UnitZ; // FindPlaneNormal(mouseRay.Direction, axisNormal);
// Produce the plane-distance from origin from this objects position vector
var planeOffset = Vector3.Dot(normal, position);
// We use negetive offset here
var translationPlane = new Plane(normal, -planeOffset);
float?distance;
if (!translationPlane.Intersects(mouseRay, out distance))
{
return;
}
var mouseVector = mouseRay.Origin + mouseRay.Direction * distance.GetValueOrDefault();
var mouseProjectionLength = Vector3.Dot(axisNormal, mouseVector);
var positionProjectionLength = Vector3.Dot(axisNormal, position);
var translationProjectionLength = (mouseProjectionLength - positionProjectionLength);
var positionVector = WorldMatrix.ExtractTranslation();
var translationVector = mouseVector - _pivot;
var vector = (mouseProjectionLength * axisNormal);
var length = (position - _pivot).Length;
var t = (mouseVector - _pivot).Normalized() * length;
var normalizedPositionVector = positionVector.Normalized();
var normalizedTransformVector = (_pivot + t).Normalized();
CosTheta = Vector3.Dot(normalizedPositionVector, normalizedTransformVector);
SinTheta = Vector3.Cross(normalizedPositionVector, normalizedTransformVector).Length;
var atanPosition = Math.Atan2(normalizedPositionVector.Y, normalizedPositionVector.X);
var atanTransform = Math.Atan2(normalizedTransformVector.Y, normalizedTransformVector.X);
var angle = atanTransform - atanPosition;
var transform = Quaternion.FromAxisAngle(normal, (float)translationProjectionLength).Normalized();
// (positionVector, translationVector);
FromQuaternion = Matrix4.CreateFromQuaternion(transform);
#if DEBUG
#endif
SetTransform(transform);
}
protected abstract void Transform(SceneMouseEventArgs args);