/**
* Draw a working scale handle in 2d space.
*/
public static Vector2 ScaleHandle2d(int id, Vector2 position, Vector2 scale, int size)
{
Event e = Event.current;
Vector2 mousePosition = e.mousePosition;
int width = size/4;
Handles.color = HANDLE_COLOR_UP;
Handles.DrawLine(position, position - Vector2.up * size * scale.y);
if(position.y - size > 0f)
Handles.CubeCap(0,
((Vector3)((position - Vector2.up*scale.y*size))) - Vector3.forward*16,
QuaternionUp,
width/3);
Handles.color = HANDLE_COLOR_RIGHT;
Handles.DrawLine(position, position + Vector2.right * size * scale.x);
if(position.y > 0f)
Handles.CubeCap(0,
((Vector3)((position + Vector2.right*scale.x*size))) - Vector3.forward*16,
Quaternion.Euler(Vector3.up*90f),
width/3);
Handles.color = HANDLE_COLOR_SCALE;
Handles.CubeCap(0,
((Vector3)position) - Vector3.forward*16,
QuaternionUp,
width/2);
// If a Tool already is engaged and it's not this one, bail.
if(currentId >= 0 && currentId != id)
return scale;
Rect handleRectUp = new Rect(position.x-width/2, position.y-size-HANDLE_PADDING, width, size + HANDLE_PADDING);
Rect handleRectRight = new Rect(position.x, position.y-width/2, size + 8, width);
Rect handleRectCenter = new Rect(position.x-width/2, position.y-width/2, width, width);
if(currentId == id)
{
switch(e.type)
{
case EventType.MouseDrag:
Vector2 diff = axisConstraint.Mask(mousePosition - initialMousePosition);
diff.x+=size;
diff.y = -diff.y; // gui space Y is opposite-world
diff.y+=size;
scale = diff/size;
if(axisConstraint == pb_HandleConstraint2D.None)
{
scale.x = Mathf.Min(scale.x, scale.y);
scale.y = Mathf.Min(scale.x, scale.y);
}
break;
case EventType.MouseUp:
case EventType.Ignore:
currentId = -1;
break;
}
}
else
{
if(e.type == EventType.MouseDown && ((!limitToLeftButton && e.button != MIDDLE_MOUSE_BUTTON) || e.button == LEFT_MOUSE_BUTTON))
{
if(handleRectCenter.Contains(mousePosition))
{
currentId = id;
handleOffset = position - mousePosition;
initialMousePosition = mousePosition;
axisConstraint = new pb_HandleConstraint2D(1, 1);
}
else
if(handleRectRight.Contains(mousePosition))
{
currentId = id;
handleOffset = position - mousePosition;
initialMousePosition = mousePosition;
axisConstraint = new pb_HandleConstraint2D(1, 0);
}
else if(handleRectUp.Contains(mousePosition))
{
currentId = id;
handleOffset = position - mousePosition;
initialMousePosition = mousePosition;
axisConstraint = new pb_HandleConstraint2D(0, 1);
}
}
}
return scale;
}
/**
* A 2D GUI view position handle.
* @param id The Handle id.
* @param position The position in GUI coordinates.
* @param size How large in pixels to draw this handle.
*/
public static Vector2 PositionHandle2d(int id, Vector2 position, int size)
{
int width = size/4;
Rect handleRectUp = new Rect(position.x-width/2, position.y-size-HANDLE_PADDING, width, size+HANDLE_PADDING);
Rect handleRectRight = new Rect(position.x, position.y-width/2, size, width+HANDLE_PADDING);
Handles.color = Color.yellow;
Handles.CircleCap(-1, position, Quaternion.identity, width/2);
Handles.color = HANDLE_COLOR_UP;
// Y Line
Handles.DrawLine(position, position - Vector2.up * size);
// Y Cone
if(position.y - size > 0f)
Handles.ConeCap(0,
((Vector3)((position - Vector2.up*size))) - ConeDepth,
QuaternionUp,
width/2);
Handles.color = HANDLE_COLOR_RIGHT;
// X Line
Handles.DrawLine(position, position + Vector2.right * size);
// X Cap
if(position.y > 0f)
Handles.ConeCap(0,
((Vector3)((position + Vector2.right*size))) - ConeDepth,
QuaternionRight,
width/2);
// If a Tool already is engaged and it's not this one, bail.
if(currentId >= 0 && currentId != id)
return position;
Event e = Event.current;
Vector2 mousePosition = e.mousePosition;
Vector2 newPosition = position;
if(currentId == id)
{
switch(e.type)
{
case EventType.MouseDrag:
newPosition = axisConstraint.Mask(mousePosition + handleOffset) + axisConstraint.InverseMask(position);
break;
case EventType.MouseUp:
case EventType.Ignore:
currentId = -1;
break;
}
}
else
{
if(e.type == EventType.MouseDown && ((!limitToLeftButton && e.button != MIDDLE_MOUSE_BUTTON) || e.button == LEFT_MOUSE_BUTTON))
{
if(Vector2.Distance(mousePosition, position) < width/2)
{
currentId = id;
handleOffset = position - mousePosition;
axisConstraint = new pb_HandleConstraint2D(1, 1);
}
else
if(handleRectRight.Contains(mousePosition))
{
currentId = id;
handleOffset = position - mousePosition;
axisConstraint = new pb_HandleConstraint2D(1, 0);
}
else if(handleRectUp.Contains(mousePosition))
{
currentId = id;
handleOffset = position - mousePosition;
axisConstraint = new pb_HandleConstraint2D(0, 1);
}
}
}
return newPosition;
}