private void DrawSnappingMarks(DrawGlContentEventArgs drawEventArgs, double mouseAngle, double alphaValue, Matrix4X4 rotationCenterTransform, double distanceFromCenter, double dotRadius, int numSnapPoints, int markToSnapTo)
{
var graphics2DOpenGL = new Graphics2DOpenGL();
double snappingRadians = MathHelper.Tau / numSnapPoints;
var clippingFrustum = GLHelper.GetClippingFrustum(InteractionContext.World);
for (int i = 0; i < numSnapPoints; i++)
{
double startAngle = i * snappingRadians + mouseAngle;
VertexStorage snapShape = new VertexStorage();
snapShape.MoveTo(-10, 0);
snapShape.LineTo(5, 7);
snapShape.LineTo(5, -7);
snapShape.ClosePolygon();
var transformed = new VertexSourceApplyTransform(snapShape, Affine.NewTranslation(distanceFromCenter, 0) * Affine.NewRotation(startAngle));
// new Ellipse(startPosition.x, startPosition.y, dotRadius, dotRadius);
var color = Color.Black;
if (i == markToSnapTo)
{
color = Color.Red;
}
graphics2DOpenGL.RenderTransformedPath(rotationCenterTransform, transformed, new Color(color, (int)(254 * alphaValue)), drawEventArgs.ZBuffered);
}
}
private void DrawSnappingMarks(DrawGlContentEventArgs drawEventArgs, double mouseAngle, double alphaValue, Matrix4X4 rotationCenterTransform, double distanceFromCenter, int numSnapPoints, int markToSnapTo)
{
var graphics2DOpenGL = new Graphics2DOpenGL(GuiWidget.DeviceScale);
double snappingRadians = MathHelper.Tau / numSnapPoints;
for (int i = 0; i < numSnapPoints; i++)
{
double startAngle = i * snappingRadians + mouseAngle;
var snapShape = new VertexStorage();
var scale = GuiWidget.DeviceScale;
snapShape.MoveTo(-10 * scale, 0);
snapShape.LineTo(5 * scale, 7 * scale);
snapShape.LineTo(5 * scale, -7 * scale);
snapShape.ClosePolygon();
var transformed = new VertexSourceApplyTransform(snapShape, Affine.NewTranslation(distanceFromCenter, 0) * Affine.NewRotation(startAngle));
// new Ellipse(startPosition.x, startPosition.y, dotRadius, dotRadius);
var color = theme.TextColor;
if (i == markToSnapTo)
{
color = theme.PrimaryAccentColor;
}
graphics2DOpenGL.RenderTransformedPath(rotationCenterTransform, transformed, new Color(color, (int)(254 * alphaValue)), drawEventArgs.ZBuffered);
}
}
private void DrawRotationCompass(IObject3D selectedItem, DrawGlContentEventArgs drawEventArgs)
{
if (InteractionContext.Scene.SelectedItem == null)
{
return;
}
double alphaValue = 1;
if (!drawEventArgs.ZBuffered)
{
alphaValue = .3;
}
AxisAlignedBoundingBox currentSelectedBounds = selectedItem.GetAxisAlignedBoundingBox(Matrix4X4.Identity);
if (currentSelectedBounds.XSize > 100000)
{
// something is wrong the part is too big (probably in invalid selection)
return;
}
Vector3 controlCenter = GetControlCenter(selectedItem);
Vector3 rotationCenter = GetRotationCenter(selectedItem, currentSelectedBounds);
if (mouseDownInfo != null)
{
rotationCenter = mouseDownInfo.SelectedObjectRotationCenter;
controlCenter = mouseDownInfo.ControlCenter;
}
if (mouseMoveInfo != null)
{
double distBetweenPixelsWorldSpace = InteractionContext.World.GetWorldUnitsPerScreenPixelAtPosition(rotationCenter);
double radius;
Matrix4X4 rotationCenterTransform = GetRotationTransform(selectedItem, out radius);
double innerRadius = radius + ringWidth / 2;
double outerRadius = innerRadius + ringWidth;
double snappingMarkRadius = outerRadius + 20;
double startBlue = 0;
double endBlue = MathHelper.Tau;
double mouseAngle = 0;
if (mouseMoveInfo != null)
{
mouseAngle = mouseMoveInfo.AngleOfHit;
}
if (mouseDownInfo != null)
{
mouseAngle = mouseDownInfo.AngleOfHit;
}
var graphics2DOpenGL = new Graphics2DOpenGL();
if (mouseDownInfo != null || MouseOver)
{
IVertexSource blueRing = new JoinPaths(new Arc(0, 0, outerRadius, outerRadius, startBlue, endBlue, Arc.Direction.CounterClockWise),
new Arc(0, 0, innerRadius, innerRadius, startBlue, endBlue, Arc.Direction.ClockWise));
graphics2DOpenGL.RenderTransformedPath(rotationCenterTransform, blueRing, new Color(Color.Blue, (int)(50 * alphaValue)), drawEventArgs.ZBuffered);
// tick 60 marks
DrawTickMarks(drawEventArgs, alphaValue, rotationCenterTransform, innerRadius, outerRadius, 60);
}
if (mouseDownInfo != null)
{
double startRed = mouseDownInfo.AngleOfHit;
double endRed = SnappedRotationAngle + mouseDownInfo.AngleOfHit;
if (!rotatingCW)
{
var temp = startRed;
startRed = endRed;
endRed = temp;
}
IVertexSource redAngle = new JoinPaths(new Arc(0, 0, 0, 0, startRed, endRed, Arc.Direction.CounterClockWise),
new Arc(0, 0, innerRadius, innerRadius, startRed, endRed, Arc.Direction.ClockWise));
graphics2DOpenGL.RenderTransformedPath(rotationCenterTransform, redAngle, new Color(Color.Red, (int)(70 * alphaValue)), drawEventArgs.ZBuffered);
// draw a line to the mouse on the rotation circle
if (mouseMoveInfo != null && MouseDownOnControl)
{
Vector3 unitPosition = new Vector3(Math.Cos(mouseMoveInfo.AngleOfHit), Math.Sin(mouseMoveInfo.AngleOfHit), 0);
Vector3 startPosition = Vector3Ex.Transform(unitPosition * innerRadius, rotationCenterTransform);
var center = Vector3Ex.Transform(Vector3.Zero, rotationCenterTransform);
if ((mouseMoveInfo.HitPosition - center).Length > rotationTransformScale * innerRadius)
{
InteractionContext.World.Render3DLine(startPosition, mouseMoveInfo.HitPosition, Color.Red, drawEventArgs.ZBuffered);
}
DrawSnappingMarks(drawEventArgs, mouseAngle, alphaValue, rotationCenterTransform, snappingMarkRadius, 5, numSnapPoints, GetSnapIndex(selectedItem, numSnapPoints));
}
}
}
}