protected override bool OnTryBeginModify()
{
if (!Owner.IsAllowScale())
{
return(false);
}
Axes axes = GetAxesByMousePosition();
if (axes.TrueCount != 0)
{
modifyPosition = Owner.GetPosition();
Vector2 screenPosition;
if (CameraSettings.ProjectToScreenCoordinates(modifyPosition, out screenPosition))
{
startMouseOffset = Viewport.MousePosition - screenPosition;
startMousePosition = Viewport.MousePosition;
//modifyScale = new Vec3( 1, 1, 1 );
selectedAxes = axes;
helpText = "";
initialObjectsTransform = new TransformOfObject[Owner.Objects.Count];
for (int n = 0; n < Owner.Objects.Count; n++)
{
TransformToolObject obj = Owner.Objects[n];
initialObjectsTransform[n] = new TransformOfObject(obj.Position, obj.Rotation, obj.Scale);
}
return(true);
}
}
return(base.OnTryBeginModify());
}
public bool IsMouseOverTriangle(Vector3 p1, Vector3 p2, Vector3 p3)
{
Vector2 screenPosition1;
if (!CameraSettings.ProjectToScreenCoordinates(p1, out screenPosition1))
{
return(false);
}
Vector2 screenPosition2;
if (!CameraSettings.ProjectToScreenCoordinates(p2, out screenPosition2))
{
return(false);
}
Vector2 screenPosition3;
if (!CameraSettings.ProjectToScreenCoordinates(p3, out screenPosition3))
{
return(false);
}
Vector2 mouse = Viewport.MousePosition;
return(PointInTriangle(mouse, screenPosition1, screenPosition2, screenPosition3));
}
public bool IsMouseNearLine(Vector3 start, Vector3 end, out Vector2 projectedScreenPointInPixels, out Radian projectedScreenAngle, out double distance)
{
projectedScreenPointInPixels = Vector2.Zero;
projectedScreenAngle = 0;
distance = 0;
Vector2 viewportSize = Viewport.SizeInPixels.ToVector2();
Vector2 mouseInPixels = Viewport.MousePosition * viewportSize;
Vector2 screenStart;
if (!CameraSettings.ProjectToScreenCoordinates(start, out screenStart))
{
return(false);
}
Vector2 screenEnd;
if (!CameraSettings.ProjectToScreenCoordinates(end, out screenEnd))
{
return(false);
}
Vector2 screenStartInPixels = screenStart * viewportSize;
Vector2 screenEndInPixels = screenEnd * viewportSize;
Rectangle rect = new Rectangle(screenStartInPixels);
rect.Add(screenEndInPixels);
rect.Expand(SelectNearPixels);
if (!rect.Contains(mouseInPixels))
{
return(false);
}
projectedScreenPointInPixels = MathAlgorithms.ProjectPointToLine(screenStartInPixels, screenEndInPixels, mouseInPixels);
/*double */
distance = (mouseInPixels - projectedScreenPointInPixels).Length();
if (distance > SelectNearPixels)
{
return(false);
}
Vector2 screenDiff = screenEndInPixels - screenStartInPixels;
projectedScreenAngle = Math.Atan2(screenDiff.Y, screenDiff.X);
return(true);
}
public override void OnRenderUI()
{
base.OnRenderUI();
if (!Owner.IsAllowRotate())
{
return;
}
var renderer = Viewport.CanvasRenderer;
Vector2 viewportSize = Owner.ViewportControl.Viewport.SizeInPixels.ToVector2();
Axis axis = Axis.None;
if (!Viewport.MouseRelativeMode)
{
if (!modify_Activated && !modify_Prepare)
{
Vector2 screenLinePointInPixels;
Radian screenLineAngle;
axis = GetAxisByMousePosition(out screenLinePointInPixels, out screenLineAngle);
}
else
{
axis = selectedAxis;
}
}
//update cursor
if (rotateCursor != null && axis != Axis.None)
{
ViewportControl.OneFrameChangeCursor = rotateCursor;
}
//draw help text
if (modify_Activated && !string.IsNullOrEmpty(helpText))
{
Vector2 screenPosition;
if (CameraSettings.ProjectToScreenCoordinates(Owner.GetPosition(), out screenPosition))
{
double offsetY = (ArrowPixelSize / viewportSize.Y) * 1.2f;
Vector2 pos = new Vector2(screenPosition.X, screenPosition.Y - offsetY);
AddTextWithShadow(renderer, helpText, pos, EHorizontalAlignment.Center, EVerticalAlignment.Bottom,
new ColorValue(1, 1, 0), 2);
}
}
}
protected override bool OnTryBeginModify()
{
if (!Owner.IsAllowRotate())
{
return(false);
}
Vector2 screenLinePointInPixels;
Radian screenLineAngle;
Axis axis = GetAxisByMousePosition(out screenLinePointInPixels, out screenLineAngle);
if (axis != Axis.None)
{
modifyPosition = Owner.GetPosition();
Vector2 screenPosition;
if (CameraSettings.ProjectToScreenCoordinates(modifyPosition, out screenPosition))
{
Vector2 viewportSize = Owner.ViewportControl.Viewport.SizeInPixels.ToVector2();
selectedAxis = axis;
selectedScreenLinePointInPixels = screenLinePointInPixels;
selectedScreenLineAngle = screenLineAngle;
mouseStartPosition = Viewport.MousePosition;
//mouseStartPositionInPixels = EngineApp.Instance.MousePosition * viewportSize;
helpText = "";
initialObjectsTransform = new TransformOfObject[Owner.Objects.Count];
for (int n = 0; n < Owner.Objects.Count; n++)
{
TransformToolObject obj = Owner.Objects[n];
initialObjectsTransform[n] = new TransformOfObject(obj.Position, obj.Rotation, obj.Scale);
}
return(true);
}
}
return(base.OnTryBeginModify());
}
///////////////
Axis GetAxisByMousePosition(out Vector2 screenLinePointInPixels, out Radian screenLineAngle)
{
screenLinePointInPixels = Vector2.Zero;
screenLineAngle = 0;
Vector2 viewportSize = Owner.ViewportControl.Viewport.SizeInPixels.ToVector2();
Trace.Assert(Owner.Objects.Count != 0);
Vector3 position = Owner.GetPosition();
double radius = GetSize();
if (radius == 0)
{
return(Axis.None);
}
const double step = MathEx.PI / 64;
double innerRadius = radius * .75f;
double cameraDistance = GetCameraDistance(position);
Vector3 oldPos = Vector3.Zero;
Quaternion startRotation = GetStartObjectsRotation();
//X
for (double angle = 0; angle <= MathEx.PI * 2 + step * .5f; angle += step)
{
Vector3 pos = position + startRotation * (new Vector3(0, Math.Sin(angle), Math.Cos(angle)) * innerRadius);
if (angle != 0 && GetCameraDistance(pos) <= cameraDistance &&
IsMouseNearLine(oldPos, pos, out screenLinePointInPixels, out screenLineAngle, out _))
{
return(Axis.X);
}
oldPos = pos;
}
//Y
for (double angle = 0; angle <= MathEx.PI * 2 + step * .5f; angle += step)
{
Vector3 pos = position + startRotation * (new Vector3(Math.Sin(angle), 0, Math.Cos(angle)) * innerRadius);
if (angle != 0 && GetCameraDistance(pos) <= cameraDistance &&
IsMouseNearLine(oldPos, pos, out screenLinePointInPixels, out screenLineAngle, out _))
{
return(Axis.Y);
}
oldPos = pos;
}
//Z
for (double angle = 0; angle <= MathEx.PI * 2 + step * .5f; angle += step)
{
Vector3 pos = position + startRotation * (new Vector3(Math.Sin(angle),
Math.Cos(angle), 0) * innerRadius);
if (angle != 0 && (GetCameraDistance(pos) <= cameraDistance || Owner.SceneMode2D) &&
IsMouseNearLine(oldPos, pos, out screenLinePointInPixels, out screenLineAngle, out _))
{
return(Axis.Z);
}
oldPos = pos;
}
Vector2 mouseInPixels = Owner.viewportControl.Viewport.MousePosition * viewportSize;
Vector2 screenPosition;
if (CameraSettings.ProjectToScreenCoordinates(position, out screenPosition))
{
Vector2 screenPositionInPixels = screenPosition * viewportSize;
double mouseDistanceInPixels = (mouseInPixels - screenPositionInPixels).Length();
//Radius
if (Math.Abs(mouseDistanceInPixels - ArrowPixelSize) < SelectNearPixels && !Owner.SceneMode2D)
{
Vector2 diffPixels = mouseInPixels - screenPositionInPixels;
Vector2 direction = diffPixels.GetNormalize();
screenLinePointInPixels = (screenPositionInPixels + direction * ArrowPixelSize);
screenLineAngle = Math.Atan2(diffPixels.Y, diffPixels.X) + MathEx.PI / 2;
return(Axis.Radius);
}
//Inner circle
if (mouseDistanceInPixels < (ArrowPixelSize) * .75f + SelectNearPixels)
{
return(Axis.InnerCircle);
}
}
return(Axis.None);
}
public override void OnRenderUI()
{
base.OnRenderUI();
if (!Owner.IsAllowScale())
{
return;
}
var renderer = Viewport.CanvasRenderer;
Vector2 viewportSize = Viewport.SizeInPixels.ToVector2();
Axes axes = new Axes(false, false, false);
if (!Viewport.MouseRelativeMode)
{
if (!modify_Activated)
{
axes = GetAxesByMousePosition();
}
else
{
axes = selectedAxes;
}
}
//update cursor
if (scaleCursor != null && axes.TrueCount != 0)
{
ViewportControl.OneFrameChangeCursor = scaleCursor;
}
Vector3 xOffset, yOffset, zOffset;
GetAxisOffsets(out xOffset, out yOffset, out zOffset);
Vector3 position = Owner.GetPosition();
Quaternion rotation = GetRotation();
double size = GetSize();
if (size != 0)
{
//draw axis names
{
double offsetY = (ArrowPixelSize / 20.0f) / viewportSize.Y;
Vector2 screenPosition;
if (CameraSettings.ProjectToScreenCoordinates(position + xOffset, out screenPosition))
{
Vector2 pos = new Vector2(screenPosition.X, screenPosition.Y - offsetY);
ColorValue color = axes.x ? new ColorValue(1, 1, 0) : new ColorValue(1, 0, 0);
AddTextWithShadow(renderer, "x", pos, EHorizontalAlignment.Center, EVerticalAlignment.Bottom, color, 1);
}
if (CameraSettings.ProjectToScreenCoordinates(position + yOffset, out screenPosition))
{
Vector2 pos = new Vector2(screenPosition.X, screenPosition.Y - offsetY);
ColorValue color = axes.y ? new ColorValue(1, 1, 0) : new ColorValue(0, 1, 0);
AddTextWithShadow(renderer, "y", pos, EHorizontalAlignment.Center, EVerticalAlignment.Bottom, color, 1);
}
if (CameraSettings.ProjectToScreenCoordinates(position + zOffset, out screenPosition))
{
Vector2 pos = new Vector2(screenPosition.X, screenPosition.Y - offsetY);
ColorValue color = axes.z ? new ColorValue(1, 1, 0) : new ColorValue(0, 0, 1);
AddTextWithShadow(renderer, "z", pos, EHorizontalAlignment.Center, EVerticalAlignment.Bottom, color, 1);
}
}
//draw help text
if (modify_Activated && !string.IsNullOrEmpty(helpText))
{
Vector2 screenPosition;
if (CameraSettings.ProjectToScreenCoordinates(Owner.GetPosition(), out screenPosition))
{
double offsetY = (ArrowPixelSize / viewportSize.Y) * 1.2f;
Vector2 pos = new Vector2(screenPosition.X, screenPosition.Y - offsetY);
AddTextWithShadow(renderer, helpText, pos, EHorizontalAlignment.Center, EVerticalAlignment.Bottom, new ColorValue(1, 1, 0), 2);
}
}
}
}
public override void OnMouseMove(Vector2 mouse)
{
base.OnMouseMove(mouse);
if (modify_Activated && !Viewport.MouseRelativeMode)
{
UpdateCursorTransitionOnScreenBorder();
Vector2 viewportSize = Owner.ViewportControl.Viewport.SizeInPixels.ToVector2();
Vector2 mousePosition = mouse + cursorTransitionOnScreenBorderOffset / viewportSize;
Vector2 screenPosition = mousePosition - startMouseOffset;
Ray ray = CameraSettings.GetRayByScreenCoordinates(screenPosition);
Vector3 position = modifyPosition;
double size = GetSize();
if (size == 0)
{
return;
}
Vector3 xOffset, yOffset, zOffset;
GetAxisOffsets(out xOffset, out yOffset, out zOffset);
double offset = 0;
if (!double.IsNaN(ray.Direction.X))
{
Vector2 pixelOffset = (mousePosition - startMousePosition) * viewportSize;
double mouseOffsetAngle = Math.Atan2(-pixelOffset.Y, pixelOffset.X);
if (selectedAxes.TrueCount == 3)
{
offset = mousePosition.Y - startMousePosition.Y;
offset *= -1;
offset *= viewportSize.Y;
}
else
{
Vector2 screenModifyPosition;
if (CameraSettings.ProjectToScreenCoordinates(modifyPosition, out screenModifyPosition))
{
screenModifyPosition *= viewportSize;
offset = 0;
if (selectedAxes.x)
{
Vector2 screenXPosition;
CameraSettings.ProjectToScreenCoordinates(position + xOffset, out screenXPosition);
if (screenXPosition.X != 0 && screenXPosition.Y != 0)
{
screenXPosition *= viewportSize;
Vector2 diff = screenXPosition - screenModifyPosition;
double diffAngle = Math.Atan2(-diff.Y, diff.X);
double angle = mouseOffsetAngle - diffAngle;
angle = MathEx.RadianNormalize360(angle);
double off = Math.Cos(angle) * pixelOffset.Length();
offset += off;
}
}
if (selectedAxes.y)
{
Vector2 screenYPosition;
CameraSettings.ProjectToScreenCoordinates(position + yOffset, out screenYPosition);
if (screenYPosition.X != 0 && screenYPosition.Y != 0)
{
screenYPosition *= viewportSize;
Vector2 diff = screenYPosition - screenModifyPosition;
double diffAngle = Math.Atan2(-diff.Y, diff.X);
double angle = mouseOffsetAngle - diffAngle;
angle = MathEx.RadianNormalize360(angle);
double off = Math.Cos(angle) * pixelOffset.Length();
offset += off;
}
}
if (selectedAxes.z)
{
Vector2 screenZPosition;
CameraSettings.ProjectToScreenCoordinates(position + zOffset, out screenZPosition);
if (screenZPosition.X != 0 && screenZPosition.Y != 0)
{
screenZPosition *= viewportSize;
Vector2 diff = screenZPosition - screenModifyPosition;
double diffAngle = Math.Atan2(-diff.Y, diff.X);
double angle = mouseOffsetAngle - diffAngle;
angle = MathEx.RadianNormalize360(angle);
double off = Math.Cos(angle) * pixelOffset.Length();
offset += off;
}
}
}
}
const double scaleCoefficient = .01f;
offset *= scaleCoefficient;
double coef;
if (offset > 0)
{
double snap = Owner.GetSnapScale();
if (snap != 0)
{
offset += snap / 2;
offset /= snap;
offset = (int)offset;
offset *= snap;
}
coef = offset + 1.0f;
}
else
{
double snap = Owner.GetSnapScale();
if (snap != 0)
{
offset -= snap / 2;
offset /= snap;
offset = (int)offset;
offset *= snap;
}
coef = 1.0f / (1.0f - offset);
}
Vector3 scaleOffset = new Vector3(selectedAxes.x ? coef : 1, selectedAxes.y ? coef : 1, selectedAxes.z ? coef : 1);
//update objects
if (initialObjectsTransform != null && Owner.Objects.Count == initialObjectsTransform.Length)
{
Owner.OnScaleModeUpdateObjects(initialObjectsTransform, modifyPosition, scaleOffset);
}
helpText = string.Format("[{0} {1} {2}]", scaleOffset.X.ToString("F2"), scaleOffset.Y.ToString("F2"),
scaleOffset.Z.ToString("F2"));
}
}
}
