protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
m_MousePositionCurrent = e.Location;
if (m_MouseButtonsDown == MouseButtons.None)
{
m_ButtonDownMousePosition = e.Location;
}
switch (m_ManipulationState)
{
case MANIPULATION_STATE.PICK_COLOR:
Cursor = Cursors.Cross;
ImageUtility.float2 UV0 = Client2ImageUV(m_ButtonDownMousePosition);
ImageUtility.float2 UV1 = Client2ImageUV(e.Location);
m_ColorPickingUpdateDelegate(UV0, UV1);
Invalidate();
break;
default:
Cursor = Cursors.Default;
break;
}
}
/// <summary>
/// Sets the crop rectangle to a specific value
/// </summary>
public void SetCropRectangle(ImageUtility.float2 _Center, ImageUtility.float2 _HalfSize, float _Rotation)
{
m_CropRectangleIsDefault = false;
m_CropRectangleCenter = _Center;
m_CropRectangleHalfSize = _HalfSize;
m_CropRectangleRotation = _Rotation;
Invalidate();
}
private PointF ImageUV2Client(ImageUtility.float2 _Position)
{
RectangleF ImageRect = ImageClientRect();
// return new PointF( ImageRect.X + _Position.x * ImageRect.Width, ImageRect.Y + _Position.y * ImageRect.Height );
// return new PointF( ImageRect.X + _Position.x * ImageRect.Height, ImageRect.Y + _Position.y * ImageRect.Height );
return(new PointF(0.5f * (Width - ImageRect.Height) + _Position.x * ImageRect.Height, ImageRect.Y + _Position.y * ImageRect.Height));
}
protected ImageUtility.float2[] BuildClipVertices(ImageUtility.float2 _Center, ImageUtility.float2 _HalfSize, ImageUtility.float2 _AxisX, ImageUtility.float2 _AxisY)
{
return(new ImageUtility.float2[4] {
_Center - _HalfSize.x * _AxisX + _HalfSize.y * _AxisY,
_Center + _HalfSize.x * _AxisX + _HalfSize.y * _AxisY,
_Center - _HalfSize.x * _AxisX - _HalfSize.y * _AxisY,
_Center + _HalfSize.x * _AxisX - _HalfSize.y * _AxisY,
});
}
/// <summary>
/// Resets the crop rectangle to the entire image
/// </summary>
public void ResetCropRectangle()
{
m_CropRectangleIsDefault = true;
if (m_Image == null)
{
return;
}
m_CropRectangleCenter = new ImageUtility.float2(0.5f, 0.5f);
m_CropRectangleHalfSize = new ImageUtility.float2(0.5f * ImageAspectRatio, 0.5f);
m_CropRectangleRotation = 0.0f;
Invalidate();
}
private PointF[] m_ClientCropRectangleVertices = new PointF[4]; // Top-left, top-right, bottom-left, bottom-right
private void UpdateCropRectangleVertices()
{
m_CropRectangleAxisX = new ImageUtility.float2((float)Math.Cos(m_CropRectangleRotation), -(float)Math.Sin(m_CropRectangleRotation));
m_CropRectangleAxisY = new ImageUtility.float2(-(float)Math.Sin(m_CropRectangleRotation), -(float)Math.Cos(m_CropRectangleRotation));
RectangleF ImageRect = ImageClientRect();
m_ClientCropRectangleCenter = ImageUV2Client(m_CropRectangleCenter);
ImageUtility.float2[] Vertices = new ImageUtility.float2[4] {
m_CropRectangleCenter - m_CropRectangleHalfSize.x * m_CropRectangleAxisX + m_CropRectangleHalfSize.y * m_CropRectangleAxisY,
m_CropRectangleCenter + m_CropRectangleHalfSize.x * m_CropRectangleAxisX + m_CropRectangleHalfSize.y * m_CropRectangleAxisY,
m_CropRectangleCenter - m_CropRectangleHalfSize.x * m_CropRectangleAxisX - m_CropRectangleHalfSize.y * m_CropRectangleAxisY,
m_CropRectangleCenter + m_CropRectangleHalfSize.x * m_CropRectangleAxisX - m_CropRectangleHalfSize.y * m_CropRectangleAxisY,
};
for (int i = 0; i < 4; i++)
{
m_ClientCropRectangleVertices[i] = ImageUV2Client(Vertices[i]);
}
}
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
m_MouseButtonsDown &= ~e.Button;
// End manipulation
switch (m_ManipulationState)
{
case MANIPULATION_STATE.PICK_COLOR:
ManipulationState = MANIPULATION_STATE.STOPPED;
// Notify end
ImageUtility.float2 UV0 = Client2ImageUV(m_ButtonDownMousePosition);
ImageUtility.float2 UV1 = Client2ImageUV(e.Location);
m_ColorPickingEndDelegate(UV0, UV1);
break;
}
Invalidate();
Capture = false;
Cursor = Cursors.Default;
}
/// <summary>
/// Computes the average color within a rectangle in UV space
/// </summary>
/// <param name="_TopLeft">The top left corner (in UV space) of the rectangle to sample</param>
/// <param name="_BottomRight">The bottom right corner (in UV space) of the rectangle to sample</param>
/// <returns>The average xyY color</returns>
public ImageUtility.float3 ComputeAverageSwatchColor(ImageUtility.float2 _TopLeft, ImageUtility.float2 _BottomRight)
{
// Average xyY values in the specified rectangle
int X0 = Math.Max(0, Math.Min(m_Texture.Width - 1, (int)Math.Floor(_TopLeft.x * m_Texture.Width)));
int Y0 = Math.Max(0, Math.Min(m_Texture.Height - 1, (int)Math.Floor(_TopLeft.y * m_Texture.Height)));
int X1 = Math.Min(m_Texture.Width, Math.Max(X0 + 1, (int)Math.Floor(_BottomRight.x * m_Texture.Width)));
int Y1 = Math.Min(m_Texture.Height, Math.Max(Y0 + 1, (int)Math.Floor(_BottomRight.y * m_Texture.Height)));
int W = X1 - X0;
int H = Y1 - Y0;
ImageUtility.float4 AverageXYZ = new ImageUtility.float4(0, 0, 0, 0);
for (int Y = Y0; Y < Y1; Y++)
{
for (int X = X0; X < X1; X++)
{
ImageUtility.float4 XYZ = m_Texture.ContentXYZ[X, Y];
AverageXYZ += XYZ;
}
}
AverageXYZ = (1.0f / (W * H)) * AverageXYZ;
ImageUtility.float3 xyY = ImageUtility.ColorProfile.XYZ2xyY((ImageUtility.float3)AverageXYZ);
return(xyY);
}
protected override void OnMouseMove( MouseEventArgs e )
{
base.OnMouseMove( e );
m_MousePositionCurrent = e.Location;
if ( m_MouseButtonsDown == MouseButtons.None )
{
m_ButtonDownMousePosition = e.Location;
m_ButtonDownCropRectangleCenter = m_CropRectangleCenter;
m_ButtonDownCropRectangleHalfSize = m_CropRectangleHalfSize;
m_ButtonDownCropRectangleRotation = m_CropRectangleRotation;
m_ButtonDownCropRectangleAxisX = m_CropRectangleAxisX;
m_ButtonDownCropRectangleAxisY = m_CropRectangleAxisY;
m_ButtonDownClientCropRectangleCenter = m_ClientCropRectangleCenter;
m_ButtonDownClientCropRectangleVertices = new PointF[4] {
m_ClientCropRectangleVertices[0],
m_ClientCropRectangleVertices[1],
m_ClientCropRectangleVertices[2],
m_ClientCropRectangleVertices[3],
};
}
switch ( m_ManipulationState )
{
case MANIPULATION_STATE.CROP_RECTANGLE:
{ // Take care of crop rectangle manipulation
if ( !m_CropRectangleManipulationStarted )
{ // Update the cursor based on the hovered manipulation spot
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.NONE;
const float TOLERANCE = 8.0f;
PointF P = e.Location;
PointF TopLeftCorner2UV = new PointF( P.X - m_ClientCropRectangleVertices[0].X, P.Y - m_ClientCropRectangleVertices[0].Y );
PointF BottomRightCorner2UV = new PointF( P.X - m_ClientCropRectangleVertices[3].X, P.Y - m_ClientCropRectangleVertices[3].Y );
float Distance2Left = -TopLeftCorner2UV.X * m_CropRectangleAxisX.x - TopLeftCorner2UV.Y * m_CropRectangleAxisX.y;
float Distance2Top = TopLeftCorner2UV.X * m_CropRectangleAxisY.x + TopLeftCorner2UV.Y * m_CropRectangleAxisY.y;
float Distance2Right = BottomRightCorner2UV.X * m_CropRectangleAxisX.x + BottomRightCorner2UV.Y * m_CropRectangleAxisX.y;
float Distance2Bottom = -BottomRightCorner2UV.X * m_CropRectangleAxisY.x - BottomRightCorner2UV.Y * m_CropRectangleAxisY.y;
// Stretch
if ( Math.Abs( Distance2Left ) < TOLERANCE )
{
if ( Math.Abs( Distance2Top ) < TOLERANCE )
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.CORNER_TOP_LEFT;
else if ( Math.Abs( Distance2Bottom ) < TOLERANCE )
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.CORNER_BOTTOM_LEFT;
else
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.LEFT;
}
else if ( Math.Abs( Distance2Right ) < TOLERANCE )
{
if ( Math.Abs( Distance2Top ) < TOLERANCE )
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.CORNER_TOP_RIGHT;
else if ( Math.Abs( Distance2Bottom ) < TOLERANCE )
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.CORNER_BOTTOM_RIGHT;
else
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.RIGHT;
}
else if ( Math.Abs( Distance2Top ) < TOLERANCE )
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.TOP;
else if ( Math.Abs( Distance2Bottom ) < TOLERANCE )
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.BOTTOM;
// Rotate
else if ( Distance2Top > TOLERANCE && Distance2Right > TOLERANCE )
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.ROTATE_TOP_RIGHT;
else if ( Distance2Top > TOLERANCE && Distance2Left > TOLERANCE )
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.ROTATE_TOP_LEFT;
else if ( Distance2Bottom > TOLERANCE && Distance2Right > TOLERANCE )
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.ROTATE_BOTTOM_RIGHT;
else if ( Distance2Bottom > TOLERANCE && Distance2Left > TOLERANCE )
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.ROTATE_BOTTOM_LEFT;
else if ( Distance2Left < 0.0f && Distance2Right < 0.0f && Distance2Bottom < 0.0f && Distance2Top < 0.0f )
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.CENTER;
// Update cursor accordingly
switch ( m_CropRectangleManipulatedSpot )
{
case CROP_RECTANGLE_SPOT.NONE: Cursor = Cursors.Default; break;
case CROP_RECTANGLE_SPOT.LEFT: Cursor = Cursors.SizeWE; break;
case CROP_RECTANGLE_SPOT.RIGHT: Cursor = Cursors.SizeWE; break;
case CROP_RECTANGLE_SPOT.TOP: Cursor = Cursors.SizeNS; break;
case CROP_RECTANGLE_SPOT.BOTTOM: Cursor = Cursors.SizeNS; break;
case CROP_RECTANGLE_SPOT.CORNER_TOP_LEFT: Cursor = Cursors.SizeNWSE; break;
case CROP_RECTANGLE_SPOT.CORNER_BOTTOM_RIGHT: Cursor = Cursors.SizeNWSE; break;
case CROP_RECTANGLE_SPOT.CORNER_TOP_RIGHT: Cursor = Cursors.SizeNESW; break;
case CROP_RECTANGLE_SPOT.CORNER_BOTTOM_LEFT: Cursor = Cursors.SizeNESW; break;
case CROP_RECTANGLE_SPOT.ROTATE_TOP_LEFT:
case CROP_RECTANGLE_SPOT.ROTATE_TOP_RIGHT:
case CROP_RECTANGLE_SPOT.ROTATE_BOTTOM_LEFT:
case CROP_RECTANGLE_SPOT.ROTATE_BOTTOM_RIGHT:
Cursor = Cursors.Hand;
break;
case CROP_RECTANGLE_SPOT.CENTER:
Cursor = Cursors.Hand;
break;
}
}
else
{ // Handle actual manipulation
ImageUtility.float2 CurClientPos = new ImageUtility.float2( e.X, e.Y );
ImageUtility.float2 OldClientPos = new ImageUtility.float2( m_ButtonDownMousePosition.X, m_ButtonDownMousePosition.Y );
ImageUtility.float2 OldClientCenter = new ImageUtility.float2( m_ButtonDownClientCropRectangleCenter.X, m_ButtonDownClientCropRectangleCenter.Y );
ImageUtility.float2 OldCenter = m_ButtonDownCropRectangleCenter;
ImageUtility.float2 OldHalfSize = m_ButtonDownCropRectangleHalfSize;
ImageUtility.float2 OldAxisX = m_ButtonDownCropRectangleAxisX;
ImageUtility.float2 OldAxisY = m_ButtonDownCropRectangleAxisY;
ImageUtility.float2[] OldVertices = new ImageUtility.float2[4] {
OldCenter - OldHalfSize.x * OldAxisX + OldHalfSize.y * OldAxisY,
OldCenter + OldHalfSize.x * OldAxisX + OldHalfSize.y * OldAxisY,
OldCenter - OldHalfSize.x * OldAxisX - OldHalfSize.y * OldAxisY,
OldCenter + OldHalfSize.x * OldAxisX - OldHalfSize.y * OldAxisY,
};
ImageUtility.float2 CurCenter = OldCenter;
ImageUtility.float2 CurHalfSize = OldHalfSize;
ImageUtility.float2 CurAxisX = OldAxisX;
ImageUtility.float2 CurAxisY = OldAxisY;
RectangleF ImageRect = ImageClientRect(); // The image's rectangle in client space
switch ( m_CropRectangleManipulatedSpot )
{
case CROP_RECTANGLE_SPOT.LEFT:
case CROP_RECTANGLE_SPOT.RIGHT:
{
ImageUtility.float2 Center2OldPos = OldClientPos - OldClientCenter;
float OldDistance2Edge = Center2OldPos.Dot( OldAxisX );
ImageUtility.float2 Center2CurPos = CurClientPos - OldClientCenter;
float CurDistance2Edge = Center2CurPos.Dot( OldAxisX );
float Delta = CurDistance2Edge - OldDistance2Edge; // This is the amount (in client space) we need to move the left/right border
float DeltaUV = Delta / ImageRect.Height; // This is the same amount in UV space
DeltaUV *= 0.5f; // We're dealing with halves all along
// Increase width of that amount
CurHalfSize.x = OldHalfSize.x + (m_CropRectangleManipulatedSpot == CROP_RECTANGLE_SPOT.LEFT ? -1 : 1) * DeltaUV;
// Move center along the X axis
if ( m_CropRectangleManipulatedSpot == CROP_RECTANGLE_SPOT.LEFT )
{ // Keep right fixed, move to the left
ImageUtility.float2 Right = OldCenter + OldHalfSize.x * OldAxisX;
ImageUtility.float2 Left = Right - 2.0f * CurHalfSize.x * OldAxisX;
CurCenter = 0.5f * (Right + Left);
}
else
{ // Keep left fixed, move to the right
ImageUtility.float2 Left = OldCenter - OldHalfSize.x * OldAxisX;
ImageUtility.float2 Right = Left + 2.0f * CurHalfSize.x * OldAxisX;
CurCenter = 0.5f * (Right + Left);
}
break;
}
case CROP_RECTANGLE_SPOT.TOP:
case CROP_RECTANGLE_SPOT.BOTTOM:
{
ImageUtility.float2 Center2OldPos = OldClientPos - OldClientCenter;
float OldDistance2Edge = Center2OldPos.Dot( OldAxisY );
ImageUtility.float2 Center2CurPos = CurClientPos - OldClientCenter;
float CurDistance2Edge = Center2CurPos.Dot( OldAxisY );
float Delta = CurDistance2Edge - OldDistance2Edge; // This is the amount (in client space) we need to move the left/right border
float DeltaUV = Delta / ImageRect.Height; // This is the same amount in UV space
DeltaUV *= 0.5f; // We're dealing with halves all along
// Increase height of that amount
CurHalfSize.y = OldHalfSize.y + (m_CropRectangleManipulatedSpot == CROP_RECTANGLE_SPOT.TOP ? 1 : -1) * DeltaUV;
// Move center along the X axis
if ( m_CropRectangleManipulatedSpot == CROP_RECTANGLE_SPOT.TOP )
{ // Keep bottom fixed, move up
ImageUtility.float2 Bottom = OldCenter - OldHalfSize.y * OldAxisY;
ImageUtility.float2 Top = Bottom + 2.0f * CurHalfSize.y * OldAxisY;
CurCenter = 0.5f * (Bottom + Top);
}
else
{ // Keep top fixed, move down
ImageUtility.float2 Top = OldCenter + OldHalfSize.y * OldAxisY;
ImageUtility.float2 Bottom = Top - 2.0f * CurHalfSize.y * OldAxisY;
CurCenter = 0.5f * (Bottom + Top);
}
break;
}
case CROP_RECTANGLE_SPOT.CORNER_TOP_LEFT:
case CROP_RECTANGLE_SPOT.CORNER_TOP_RIGHT:
case CROP_RECTANGLE_SPOT.CORNER_BOTTOM_LEFT:
case CROP_RECTANGLE_SPOT.CORNER_BOTTOM_RIGHT:
{
ImageUtility.float2 Delta = CurClientPos - OldClientPos;
ImageUtility.float2 DeltaUV = (1.0f / ImageRect.Height) * Delta;
ImageUtility.float2 Corner = new ImageUtility.float2(), OppositeCorner = new ImageUtility.float2();
switch ( m_CropRectangleManipulatedSpot )
{
case CROP_RECTANGLE_SPOT.CORNER_TOP_LEFT: Corner = OldVertices[0]; OppositeCorner = OldVertices[3]; break; // Keep bottom right fixed
case CROP_RECTANGLE_SPOT.CORNER_TOP_RIGHT: Corner = OldVertices[1]; OppositeCorner = OldVertices[2]; break; // Keep bottom left fixed
case CROP_RECTANGLE_SPOT.CORNER_BOTTOM_LEFT: Corner = OldVertices[2]; OppositeCorner = OldVertices[1]; break; // Keep top right fixed
case CROP_RECTANGLE_SPOT.CORNER_BOTTOM_RIGHT: Corner = OldVertices[3]; OppositeCorner = OldVertices[0]; break; // Keep top left fixed
}
// Move corner
Corner += DeltaUV;
// Compute new center
CurCenter = new ImageUtility.float2( 0.5f * (Corner.x + OppositeCorner.x), 0.5f * (Corner.y + OppositeCorner.y) );
// Compute new size
CurHalfSize = new ImageUtility.float2( Math.Abs( (Corner - CurCenter).Dot( OldAxisX ) ), Math.Abs( (Corner - CurCenter).Dot( OldAxisY ) ) );
break;
}
case CROP_RECTANGLE_SPOT.ROTATE_TOP_LEFT:
case CROP_RECTANGLE_SPOT.ROTATE_TOP_RIGHT:
case CROP_RECTANGLE_SPOT.ROTATE_BOTTOM_LEFT:
case CROP_RECTANGLE_SPOT.ROTATE_BOTTOM_RIGHT:
{
ImageUtility.float2 Center2OldPos = OldClientPos - OldClientCenter;
ImageUtility.float2 Center2CurPos = CurClientPos - OldClientCenter;
float OldAngle = (float) Math.Atan2( -Center2OldPos.y, Center2OldPos.x );
float CurAngle = (float) Math.Atan2( -Center2CurPos.y, Center2CurPos.x );
m_CropRectangleRotation = m_ButtonDownCropRectangleRotation + CurAngle - OldAngle;
CurAxisX = new ImageUtility.float2( (float) Math.Cos( m_CropRectangleRotation ), -(float) Math.Sin( m_CropRectangleRotation ) );
CurAxisY = new ImageUtility.float2( -(float) Math.Sin( m_CropRectangleRotation ), -(float) Math.Cos( m_CropRectangleRotation ) );
break;
}
case CROP_RECTANGLE_SPOT.CENTER:
{
ImageUtility.float2 Delta = CurClientPos - OldClientPos;
ImageUtility.float2 DeltaUV = (1.0f / ImageRect.Height) * Delta;
CurCenter = OldCenter + DeltaUV;
break;
}
}
CurHalfSize.x = Math.Max( 1e-3f, CurHalfSize.x );
CurHalfSize.y = Math.Max( 1e-3f, CurHalfSize.y );
// Constrain vertices to the image
ImageUtility.float2[] Vertices = BuildClipVertices( CurCenter, CurHalfSize, CurAxisX, CurAxisY );
float MinX = 0.5f * (1.0f - ImageAspectRatio);
float MaxX = 0.5f * (1.0f + ImageAspectRatio);
for ( int i=0; i < 4; i++ )
{
bool Rebuild = false;
if ( Vertices[i].x < MinX )
{
Vertices[i].x = MinX;
Rebuild = true;
}
if ( Vertices[i].x > MaxX )
{
Vertices[i].x = MaxX;
Rebuild = true;
}
if ( Vertices[i].y < 0.0f )
{
Vertices[i].y = 0.0f;
Rebuild = true;
}
if ( Vertices[i].y > 1.0f )
{
Vertices[i].y = 1.0f;
Rebuild = true;
}
if ( !Rebuild )
continue;
ImageUtility.float2 OppositeVertex = Vertices[3-i]; // This one is fixed
// Recompute center & half size
CurCenter = 0.5f * (OppositeVertex + Vertices[i]);
ImageUtility.float2 Delta = Vertices[i] - OppositeVertex;
CurHalfSize = 0.5f * new ImageUtility.float2( Math.Abs( Delta.Dot( CurAxisX ) ), Math.Abs( Delta.Dot( CurAxisY ) ) );
// Rebuild new vertices
Vertices = BuildClipVertices( CurCenter, CurHalfSize, CurAxisX, CurAxisY );
}
m_CropRectangleCenter = CurCenter;
m_CropRectangleHalfSize = CurHalfSize;
// The crop rectangle has changed!
m_CropRectangleIsDefault = false;
// Repaint to update the crop rectangle
Invalidate();
}
break;
}
case MANIPULATION_STATE.CALIBRATION_TARGET:
{ // Take care of calibration manipulation
Cursor = Cursors.Cross;
switch ( m_CalibrationStage )
{
case CALIBRATION_STAGE.PICK_CENTER:
m_CalibrationCenter = Client2ImageUV_NoSquareAspectRatio( e.Location );
Invalidate();
break;
case CALIBRATION_STAGE.SET_RADIUS:
{
ImageUtility.float2 Temp = Client2ImageUV_NoSquareAspectRatio( e.Location );
m_CalibrationRadius = (float) Math.Sqrt( (Temp.x - m_CalibrationCenter.x)*(Temp.x - m_CalibrationCenter.x) + (Temp.y - m_CalibrationCenter.y)*(Temp.y - m_CalibrationCenter.y) );
Invalidate();
}
break;
}
break;
}
default:
Cursor = Cursors.Default;
break;
}
}
private PointF ImageUV2Client_NoSquareAspectRatio(ImageUtility.float2 _Position)
{
RectangleF ImageRect = ImageClientRect();
return(new PointF(ImageRect.X + _Position.x * ImageRect.Width, ImageRect.Y + _Position.y * ImageRect.Height));
}
private PointF ImageUV2Client(ImageUtility.float2 _Position)
{
RectangleF ImageRect = ImageClientRect();
return(new PointF(_Position.x * ImageRect.Width + ImageRect.X, _Position.y * ImageRect.Height + ImageRect.Y));
}
/// <summary>
/// Captures the calibrated texture
/// </summary>
/// <param name="_Source">The source image to capture</param>
/// <param name="_Database">Database to perform proper calibration</param>
/// <param name="_Parms">Parameters for the capture</param>
public void Capture( ImageUtility.Bitmap _Source, CameraCalibrationDatabase _Database, CaptureParms _Parms )
{
if ( _Source == null )
throw new Exception( "Invalid source bitmap to build texture from!" );
if ( _Database == null )
throw new Exception( "Invalid calibration database found in parameters!" );
if ( _Parms == null )
throw new Exception( "Invalid calibration parameters!" );
if ( m_SwatchWidth <= 0 || m_SwatchHeight <= 0 )
throw new Exception( "Invalid swatch size! Must be > 0!" );
// Save parameters as they're associated to this texture
m_CaptureParameters = _Parms;
m_WhiteReflectanceReference = _Database.WhiteReflectanceReference;
m_WhiteReflectanceCorrectionFactor = _Database.WhiteReflectanceCorrectionFactor;
m_SpatialCorrectionEnabled = _Database.WhiteReferenceImage != null;
//////////////////////////////////////////////////////////////////////////
// Setup the database to find the most appropriate calibration data for our image infos
_Database.PrepareCalibrationFor( _Parms.ISOSpeed, _Parms.ShutterSpeed, _Parms.Aperture );
//////////////////////////////////////////////////////////////////////////
// Build target texture
ImageUtility.float4 AvgXYZ = new ImageUtility.float4( 0, 0, 0, 0 );
//DEBUG
// float MinLuminance_Raw = float.MaxValue;
// float MaxLuminance_Raw = -float.MaxValue;
const int EXTREME_VALUES_COUNT = 100;
ImageUtility.float3[] ArrayMin = new ImageUtility.float3[EXTREME_VALUES_COUNT];
ImageUtility.float3[] ArrayMax = new ImageUtility.float3[EXTREME_VALUES_COUNT];
for ( int i=0; i < EXTREME_VALUES_COUNT; i++ )
{
ArrayMin[i] = new ImageUtility.float3( 0, 1, 0 );
ArrayMax[i] = new ImageUtility.float3( 0, 0, 0 );
}
if ( _Parms.CropSource )
{
float fImageWidth = 2.0f * _Parms.CropRectangleHalfSize.x * _Source.Height;
float fImageHeight = 2.0f * _Parms.CropRectangleHalfSize.y * _Source.Height;
int W = (int) Math.Floor( fImageWidth );
int H = (int) Math.Floor( fImageHeight );
ImageUtility.float2 AxisX = new ImageUtility.float2( (float) Math.Cos( _Parms.CropRectangleRotation ), -(float) Math.Sin( _Parms.CropRectangleRotation ) );
ImageUtility.float2 AxisY = new ImageUtility.float2( (float) Math.Sin( _Parms.CropRectangleRotation ), (float) Math.Cos( _Parms.CropRectangleRotation ) );
ImageUtility.float2 TopLeftCorner = new ImageUtility.float2( 0.5f * (_Source.Width - _Source.Height) + _Parms.CropRectangleCenter.x * _Source.Height, _Source.Height * _Parms.CropRectangleCenter.y )
+ _Source.Height * (-_Parms.CropRectangleHalfSize.x * AxisX - _Parms.CropRectangleHalfSize.y * AxisY);
m_Texture = new ImageUtility.Bitmap( W, H, new ImageUtility.ColorProfile( ImageUtility.ColorProfile.STANDARD_PROFILE.sRGB ) );
ImageUtility.float4 XYZ;
ImageUtility.float3 ShortXYZ;
ImageUtility.float3 xyY;
ImageUtility.float2 CurrentScanlinePixel = TopLeftCorner + 0.5f * (fImageWidth - W) * AxisX + 0.5f * (fImageHeight - H) * AxisY;
if ( Math.Abs( _Parms.CropRectangleRotation ) < 1e-6f )
{ // Use integer pixels to avoid attenuated values due to bilinear filtering
CurrentScanlinePixel.x = (float) Math.Floor( CurrentScanlinePixel.x );
CurrentScanlinePixel.y = (float) Math.Floor( CurrentScanlinePixel.y );
}
for ( int Y=0; Y < H; Y++ )
{
ImageUtility.float2 CurrentPixel = CurrentScanlinePixel;
for ( int X=0; X < W; X++ )
{
float U = CurrentPixel.x / _Source.Width;
float V = CurrentPixel.y / _Source.Height;
XYZ = _Source.BilinearSample( CurrentPixel.x, CurrentPixel.y );
//DEBUG
// float L = XYZ.y * _Database.GetSpatialLuminanceCorrectionFactor( U, V );
// if ( L < MinLuminance_Raw )
// MinLuminance_Raw = L;
// if ( L > MaxLuminance_Raw )
// MaxLuminance_Raw = L;
//DEBUG
xyY = ImageUtility.ColorProfile.XYZ2xyY( (ImageUtility.float3) XYZ );
xyY = _Database.CalibrateWithSpatialCorrection( U, V, xyY ); // Apply luminance calibration
ShortXYZ = ImageUtility.ColorProfile.xyY2XYZ( xyY );
XYZ = new ImageUtility.float4( ShortXYZ, XYZ.w );
m_Texture.ContentXYZ[X,Y] = XYZ;
// Update min/max/avg values
InsertMinMax( ShortXYZ, ArrayMin, ArrayMax, EXTREME_VALUES_COUNT );
AvgXYZ += XYZ;
CurrentPixel += AxisX;
}
CurrentScanlinePixel += AxisY;
}
}
else
{ // Simple texture copy, with luminance calibration
m_Texture = new ImageUtility.Bitmap( _Source.Width, _Source.Height, new ImageUtility.ColorProfile( ImageUtility.ColorProfile.STANDARD_PROFILE.sRGB ) );
ImageUtility.float4 XYZ;
ImageUtility.float3 ShortXYZ;
ImageUtility.float3 xyY;
int W = m_Texture.Width;
int H = m_Texture.Height;
int X0 = 0;
int X1 = W;
int Y0 = 0;
int Y1 = H;
//DEBUG
// X0 = 1088; Y0 = 764;
// X1 = X0 + 1100; Y1 = Y0 + 632;
for ( int Y=Y0; Y < Y1; Y++ )
{
float V = (float) Y / H;
for ( int X=X0; X < X1; X++ )
{
float U = (float) X / W;
XYZ = _Source.ContentXYZ[X,Y];
//DEBUG
// float L = XYZ.y * _Database.GetSpatialLuminanceCorrectionFactor( U, V );
// if ( L < MinLuminance_Raw )
// MinLuminance_Raw = L;
// if ( L > MaxLuminance_Raw )
// MaxLuminance_Raw = L;
//DEBUG
xyY = ImageUtility.ColorProfile.XYZ2xyY( (ImageUtility.float3) XYZ );
xyY = _Database.CalibrateWithSpatialCorrection( U, V, xyY ); // Apply luminance calibration
ShortXYZ = ImageUtility.ColorProfile.xyY2XYZ( xyY );
XYZ = new ImageUtility.float4( ShortXYZ, XYZ.w );
m_Texture.ContentXYZ[X,Y] = XYZ;
// Update min/max/avg values
InsertMinMax( ShortXYZ, ArrayMin, ArrayMax, EXTREME_VALUES_COUNT );
AvgXYZ += XYZ;
}
}
}
// Normalize average swatch color
float Normalizer = 1.0f / (m_Texture.Width*m_Texture.Height);
ImageUtility.float3 avgxyY = ImageUtility.ColorProfile.XYZ2xyY( Normalizer * ((ImageUtility.float3) AvgXYZ) );
m_SwatchAvg.xyY = avgxyY;
// Compute min & max using statistical norm
ImageUtility.float3 BestXYZ_Min;
ImageUtility.float3 BestXYZ_Max;
if ( _Parms.UseModeInsteadOfMean )
{ // Use mode
BestXYZ_Min = ComputeMode( ArrayMin );
BestXYZ_Max = ComputeMode( ArrayMax );
}
else
{ // Use mean
BestXYZ_Min = ComputeMean( ArrayMin );
BestXYZ_Max = ComputeMean( ArrayMax );
}
m_SwatchMin.xyY = ImageUtility.ColorProfile.XYZ2xyY( BestXYZ_Min );
m_SwatchMax.xyY = ImageUtility.ColorProfile.XYZ2xyY( BestXYZ_Max );
m_SwatchMin.Texture = BuildSwatch( m_SwatchWidth, m_SwatchHeight, m_SwatchMin.xyY );
m_SwatchMax.Texture = BuildSwatch( m_SwatchWidth, m_SwatchHeight, m_SwatchMax.xyY );
m_SwatchAvg.Texture = BuildSwatch( m_SwatchWidth, m_SwatchHeight, m_SwatchAvg.xyY );
// Rebuild custom swatches
foreach ( CustomSwatch CS in m_CustomSwatches )
CS.Texture = BuildSwatch( m_SwatchWidth, m_SwatchHeight, CS.xyY );
//////////////////////////////////////////////////////////////////////////
// Feed some purely informational shot infos to the main texture, probably won't be saved anyway...
m_Texture.HasValidShotInfo = true;
m_Texture.ISOSpeed = _Parms.ISOSpeed;
m_Texture.ShutterSpeed = _Parms.ShutterSpeed;
m_Texture.Aperture = _Parms.Aperture;
}
/// <summary>
/// Prepares the interpolated calibration table to process the pixels in an image shot with the specified shot infos
/// </summary>
/// <param name="_ISOSpeed"></param>
/// <param name="_ShutterSpeed"></param>
/// <param name="_Aperture"></param>
public void PrepareCalibrationFor( float _ISOSpeed, float _ShutterSpeed, float _Aperture )
{
if ( m_RootNode == null )
throw new Exception( "Calibration grid hasn't been built: did you provide a valid database path? Does the path contain camera calibration data?" );
if ( IsPreparedFor( _ISOSpeed, _ShutterSpeed, _Aperture ) )
return; // Already prepared!
//////////////////////////////////////////////////////////////////////////
// Find the 8 nodes encompassing our values
// I'm making the delicate assumption that, although the starting node is chosen on the
// condition its EV values are strictly inferior to the target we're looking for, all
// neighbor nodes should satisfy the condition they're properly placed.
//
// This is true for the direct neighbors +X, +Y, +Z that are immediately above target values
// but for example, neighbor (+X +Y) may have a very bad aperture value (Z) that may be
// above the target aperture...
//
// Let's hope the user won't provide too fancy calibrations...
// (anyway, interpolants are clamped in [0,1] so there's no risk of overshooting)
//
ImageUtility.float3 EV;
GridNode.Convert2EV( _ISOSpeed, _ShutterSpeed, _Aperture, out EV.x, out EV.y, out EV.z );
// Find the start node
GridNode StartNode = FindStartNode( EV.x, EV.y, EV.z );
m_InterpolationStartNode = StartNode;
// Build the 8 grid nodes from it
GridNode[,,] Grid = new GridNode[2,2,2];
Grid[0,0,0] = StartNode;
Grid[1,0,0] = StartNode.m_Neighbors[0][1] != null ? StartNode.m_Neighbors[0][1] : StartNode; // +X
Grid[0,1,0] = StartNode.m_Neighbors[1][1] != null ? StartNode.m_Neighbors[1][1] : StartNode; // +Y
Grid[0,0,1] = StartNode.m_Neighbors[2][1] != null ? StartNode.m_Neighbors[2][1] : StartNode; // +Z
Grid[1,1,0] = Grid[1,0,0].m_Neighbors[1][1] != null ? Grid[1,0,0].m_Neighbors[1][1] : Grid[1,0,0]; // +X +Y
Grid[0,1,1] = Grid[0,1,0].m_Neighbors[2][1] != null ? Grid[0,1,0].m_Neighbors[2][1] : Grid[0,1,0]; // +Y +Z
Grid[1,0,1] = Grid[0,0,1].m_Neighbors[0][1] != null ? Grid[0,0,1].m_Neighbors[0][1] : Grid[0,0,1]; // +X +Z
Grid[1,1,1] = Grid[1,1,0].m_Neighbors[2][1] != null ? Grid[1,1,0].m_Neighbors[2][1] : Grid[1,1,0]; // +X +Y +Z
//////////////////////////////////////////////////////////////////////////
// Create the successive interpolants for trilinear interpolation
//
// Assume we interpolate on X first (ISO speed), so we need 4 distinct values
ImageUtility.float4 tX = new ImageUtility.float4(
Math.Max( 0.0f, Math.Min( 1.0f, (EV.x - Grid[0,0,0].m_EV_ISOSpeed) / Math.Max( 1e-6f, Grid[1,0,0].m_EV_ISOSpeed - Grid[0,0,0].m_EV_ISOSpeed) ) ), // Y=0 Z=0
Math.Max( 0.0f, Math.Min( 1.0f, (EV.x - Grid[0,1,0].m_EV_ISOSpeed) / Math.Max( 1e-6f, Grid[1,1,0].m_EV_ISOSpeed - Grid[0,1,0].m_EV_ISOSpeed) ) ), // Y=1 Z=0
Math.Max( 0.0f, Math.Min( 1.0f, (EV.x - Grid[0,0,1].m_EV_ISOSpeed) / Math.Max( 1e-6f, Grid[1,0,1].m_EV_ISOSpeed - Grid[0,0,1].m_EV_ISOSpeed) ) ), // Y=0 Z=1
Math.Max( 0.0f, Math.Min( 1.0f, (EV.x - Grid[0,1,1].m_EV_ISOSpeed) / Math.Max( 1e-6f, Grid[1,1,1].m_EV_ISOSpeed - Grid[0,1,1].m_EV_ISOSpeed) ) ) // Y=1 Z=1
);
ImageUtility.float4 rX = new ImageUtility.float4( 1.0f - tX.x, 1.0f - tX.y, 1.0f - tX.z, 1.0f - tX.w );
// Compute the 4 interpolated shutter speeds & apertures
ImageUtility.float4 ShutterSpeedsX = new ImageUtility.float4(
rX.x * Grid[0,0,0].m_EV_ShutterSpeed + tX.x * Grid[1,0,0].m_EV_ShutterSpeed, // Y=0 Z=0
rX.y * Grid[0,1,0].m_EV_ShutterSpeed + tX.y * Grid[1,1,0].m_EV_ShutterSpeed, // Y=1 Z=0
rX.z * Grid[0,0,1].m_EV_ShutterSpeed + tX.z * Grid[1,0,1].m_EV_ShutterSpeed, // Y=0 Z=1
rX.w * Grid[0,1,1].m_EV_ShutterSpeed + tX.w * Grid[1,1,1].m_EV_ShutterSpeed // Y=1 Z=1
);
ImageUtility.float4 AperturesX = new ImageUtility.float4(
rX.x * Grid[0,0,0].m_EV_Aperture + tX.x * Grid[1,0,0].m_EV_Aperture, // Y=0 Z=0
rX.y * Grid[0,1,0].m_EV_Aperture + tX.y * Grid[1,1,0].m_EV_Aperture, // Y=1 Z=0
rX.z * Grid[0,0,1].m_EV_Aperture + tX.z * Grid[1,0,1].m_EV_Aperture, // Y=0 Z=1
rX.w * Grid[0,1,1].m_EV_Aperture + tX.w * Grid[1,1,1].m_EV_Aperture // Y=1 Z=1
);
// Next we interpolate on Y (Shutter speed), so we need 2 distinct values
ImageUtility.float2 tY = new ImageUtility.float2(
Math.Max( 0.0f, Math.Min( 1.0f, (EV.y - ShutterSpeedsX.x) / Math.Max( 1e-6f, ShutterSpeedsX.y - ShutterSpeedsX.x) ) ), // Z=0
Math.Max( 0.0f, Math.Min( 1.0f, (EV.y - ShutterSpeedsX.z) / Math.Max( 1e-6f, ShutterSpeedsX.w - ShutterSpeedsX.z) ) ) // Z=1
);
ImageUtility.float2 rY = new ImageUtility.float2( 1.0f - tY.x, 1.0f - tY.y );
// Compute the 2 apertures
ImageUtility.float2 AperturesY = new ImageUtility.float2(
rY.x * AperturesX.x + tY.x * AperturesX.y,
rY.y * AperturesX.z + tY.y * AperturesX.w
);
// Finally, we interpolate on Z (Aperture), we need only 1 single value
float tZ = Math.Max( 0.0f, Math.Min( 1.0f, (EV.z - AperturesY.x) / Math.Max( 1e-6f, AperturesY.y - AperturesY.x) ) );
float rZ = 1.0f - tZ;
//////////////////////////////////////////////////////////////////////////
// Create the special camera calibration that is the result of the interpolation of the 8 nearest ones in the grid
m_InterpolatedCalibration = new CameraCalibration();
m_InterpolatedCalibration.m_CameraShotInfos.m_ISOSpeed = _ISOSpeed;
m_InterpolatedCalibration.m_CameraShotInfos.m_ShutterSpeed = _ShutterSpeed;
m_InterpolatedCalibration.m_CameraShotInfos.m_Aperture = _Aperture;
for ( int ProbeIndex=0; ProbeIndex < REQUIRED_PROBES_COUNT; ProbeIndex++ )
{
CameraCalibration.Probe TargetProbe = m_InterpolatedCalibration.m_Reflectances[ProbeIndex];
float L000 = Grid[0,0,0].m_CameraCalibration.m_Reflectances[ProbeIndex].m_LuminanceMeasured;
float L100 = Grid[1,0,0].m_CameraCalibration.m_Reflectances[ProbeIndex].m_LuminanceMeasured;
float L010 = Grid[0,1,0].m_CameraCalibration.m_Reflectances[ProbeIndex].m_LuminanceMeasured;
float L110 = Grid[1,1,0].m_CameraCalibration.m_Reflectances[ProbeIndex].m_LuminanceMeasured;
float L001 = Grid[0,0,1].m_CameraCalibration.m_Reflectances[ProbeIndex].m_LuminanceMeasured;
float L101 = Grid[1,0,1].m_CameraCalibration.m_Reflectances[ProbeIndex].m_LuminanceMeasured;
float L011 = Grid[0,1,1].m_CameraCalibration.m_Reflectances[ProbeIndex].m_LuminanceMeasured;
float L111 = Grid[1,1,1].m_CameraCalibration.m_Reflectances[ProbeIndex].m_LuminanceMeasured;
// Interpolate on X (ISO speed)
float L00 = rX.x * L000 + tX.x * L100;
float L10 = rX.y * L010 + tX.y * L110;
float L01 = rX.z * L001 + tX.z * L101;
float L11 = rX.w * L011 + tX.w * L111;
// Interpolate on Y (shutter speed)
float L0 = rY.x * L00 + tY.x * L10;
float L1 = rY.y * L01 + tY.y * L11;
// Interpolate on Z (aperture)
float L = rZ * L0 + tZ * L1;
TargetProbe.m_IsAvailable = true;
TargetProbe.m_LuminanceMeasured = L;
}
// Fill missing values
m_InterpolatedCalibration.UpdateAllLuminances();
// Reset white reflectance reference because it was set for another setup
WhiteReflectanceReference = new ImageUtility.float3( 0, 0, -1 );
}
/// <summary>
/// Captures the calibrated texture
/// </summary>
/// <param name="_Source">The source image to capture</param>
/// <param name="_Database">Database to perform proper calibration</param>
/// <param name="_Parms">Parameters for the capture</param>
public void Capture(ImageUtility.Bitmap _Source, CameraCalibrationDatabase _Database, CaptureParms _Parms)
{
if (_Source == null)
{
throw new Exception("Invalid source bitmap to build texture from!");
}
if (_Database == null)
{
throw new Exception("Invalid calibration database found in parameters!");
}
if (_Parms == null)
{
throw new Exception("Invalid calibration parameters!");
}
if (m_SwatchWidth <= 0 || m_SwatchHeight <= 0)
{
throw new Exception("Invalid swatch size! Must be > 0!");
}
// Save parameters as they're associated to this texture
m_CaptureParameters = _Parms;
m_WhiteReflectanceReference = _Database.WhiteReflectanceReference;
m_WhiteReflectanceCorrectionFactor = _Database.WhiteReflectanceCorrectionFactor;
m_SpatialCorrectionEnabled = _Database.WhiteReferenceImage != null;
//////////////////////////////////////////////////////////////////////////
// Setup the database to find the most appropriate calibration data for our image infos
_Database.PrepareCalibrationFor(_Parms.ISOSpeed, _Parms.ShutterSpeed, _Parms.Aperture);
//////////////////////////////////////////////////////////////////////////
// Build target texture
ImageUtility.float4 AvgXYZ = new ImageUtility.float4(0, 0, 0, 0);
//DEBUG
// float MinLuminance_Raw = float.MaxValue;
// float MaxLuminance_Raw = -float.MaxValue;
const int EXTREME_VALUES_COUNT = 100;
ImageUtility.float3[] ArrayMin = new ImageUtility.float3[EXTREME_VALUES_COUNT];
ImageUtility.float3[] ArrayMax = new ImageUtility.float3[EXTREME_VALUES_COUNT];
for (int i = 0; i < EXTREME_VALUES_COUNT; i++)
{
ArrayMin[i] = new ImageUtility.float3(0, 1, 0);
ArrayMax[i] = new ImageUtility.float3(0, 0, 0);
}
if (_Parms.CropSource)
{
float fImageWidth = 2.0f * _Parms.CropRectangleHalfSize.x * _Source.Height;
float fImageHeight = 2.0f * _Parms.CropRectangleHalfSize.y * _Source.Height;
int W = (int)Math.Floor(fImageWidth);
int H = (int)Math.Floor(fImageHeight);
ImageUtility.float2 AxisX = new ImageUtility.float2((float)Math.Cos(_Parms.CropRectangleRotation), -(float)Math.Sin(_Parms.CropRectangleRotation));
ImageUtility.float2 AxisY = new ImageUtility.float2((float)Math.Sin(_Parms.CropRectangleRotation), (float)Math.Cos(_Parms.CropRectangleRotation));
ImageUtility.float2 TopLeftCorner = new ImageUtility.float2(0.5f * (_Source.Width - _Source.Height) + _Parms.CropRectangleCenter.x * _Source.Height, _Source.Height * _Parms.CropRectangleCenter.y)
+ _Source.Height * (-_Parms.CropRectangleHalfSize.x * AxisX - _Parms.CropRectangleHalfSize.y * AxisY);
m_Texture = new ImageUtility.Bitmap(W, H, new ImageUtility.ColorProfile(ImageUtility.ColorProfile.STANDARD_PROFILE.sRGB));
ImageUtility.float4 XYZ;
ImageUtility.float3 ShortXYZ;
ImageUtility.float3 xyY;
ImageUtility.float2 CurrentScanlinePixel = TopLeftCorner + 0.5f * (fImageWidth - W) * AxisX + 0.5f * (fImageHeight - H) * AxisY;
if (Math.Abs(_Parms.CropRectangleRotation) < 1e-6f)
{ // Use integer pixels to avoid attenuated values due to bilinear filtering
CurrentScanlinePixel.x = (float)Math.Floor(CurrentScanlinePixel.x);
CurrentScanlinePixel.y = (float)Math.Floor(CurrentScanlinePixel.y);
}
for (int Y = 0; Y < H; Y++)
{
ImageUtility.float2 CurrentPixel = CurrentScanlinePixel;
for (int X = 0; X < W; X++)
{
float U = CurrentPixel.x / _Source.Width;
float V = CurrentPixel.y / _Source.Height;
XYZ = _Source.BilinearSample(CurrentPixel.x, CurrentPixel.y);
//DEBUG
// float L = XYZ.y * _Database.GetSpatialLuminanceCorrectionFactor( U, V );
// if ( L < MinLuminance_Raw )
// MinLuminance_Raw = L;
// if ( L > MaxLuminance_Raw )
// MaxLuminance_Raw = L;
//DEBUG
xyY = ImageUtility.ColorProfile.XYZ2xyY((ImageUtility.float3)XYZ);
xyY = _Database.CalibrateWithSpatialCorrection(U, V, xyY); // Apply luminance calibration
ShortXYZ = ImageUtility.ColorProfile.xyY2XYZ(xyY);
XYZ = new ImageUtility.float4(ShortXYZ, XYZ.w);
m_Texture.ContentXYZ[X, Y] = XYZ;
// Update min/max/avg values
InsertMinMax(ShortXYZ, ArrayMin, ArrayMax, EXTREME_VALUES_COUNT);
AvgXYZ += XYZ;
CurrentPixel += AxisX;
}
CurrentScanlinePixel += AxisY;
}
}
else
{ // Simple texture copy, with luminance calibration
m_Texture = new ImageUtility.Bitmap(_Source.Width, _Source.Height, new ImageUtility.ColorProfile(ImageUtility.ColorProfile.STANDARD_PROFILE.sRGB));
ImageUtility.float4 XYZ;
ImageUtility.float3 ShortXYZ;
ImageUtility.float3 xyY;
int W = m_Texture.Width;
int H = m_Texture.Height;
int X0 = 0;
int X1 = W;
int Y0 = 0;
int Y1 = H;
//DEBUG
// X0 = 1088; Y0 = 764;
// X1 = X0 + 1100; Y1 = Y0 + 632;
for (int Y = Y0; Y < Y1; Y++)
{
float V = (float)Y / H;
for (int X = X0; X < X1; X++)
{
float U = (float)X / W;
XYZ = _Source.ContentXYZ[X, Y];
//DEBUG
// float L = XYZ.y * _Database.GetSpatialLuminanceCorrectionFactor( U, V );
// if ( L < MinLuminance_Raw )
// MinLuminance_Raw = L;
// if ( L > MaxLuminance_Raw )
// MaxLuminance_Raw = L;
//DEBUG
xyY = ImageUtility.ColorProfile.XYZ2xyY((ImageUtility.float3)XYZ);
xyY = _Database.CalibrateWithSpatialCorrection(U, V, xyY); // Apply luminance calibration
ShortXYZ = ImageUtility.ColorProfile.xyY2XYZ(xyY);
XYZ = new ImageUtility.float4(ShortXYZ, XYZ.w);
m_Texture.ContentXYZ[X, Y] = XYZ;
// Update min/max/avg values
InsertMinMax(ShortXYZ, ArrayMin, ArrayMax, EXTREME_VALUES_COUNT);
AvgXYZ += XYZ;
}
}
}
// Normalize average swatch color
float Normalizer = 1.0f / (m_Texture.Width * m_Texture.Height);
ImageUtility.float3 avgxyY = ImageUtility.ColorProfile.XYZ2xyY(Normalizer * ((ImageUtility.float3)AvgXYZ));
m_SwatchAvg.xyY = avgxyY;
// Compute min & max using statistical norm
ImageUtility.float3 BestXYZ_Min;
ImageUtility.float3 BestXYZ_Max;
if (_Parms.UseModeInsteadOfMean)
{ // Use mode
BestXYZ_Min = ComputeMode(ArrayMin);
BestXYZ_Max = ComputeMode(ArrayMax);
}
else
{ // Use mean
BestXYZ_Min = ComputeMean(ArrayMin);
BestXYZ_Max = ComputeMean(ArrayMax);
}
m_SwatchMin.xyY = ImageUtility.ColorProfile.XYZ2xyY(BestXYZ_Min);
m_SwatchMax.xyY = ImageUtility.ColorProfile.XYZ2xyY(BestXYZ_Max);
m_SwatchMin.Texture = BuildSwatch(m_SwatchWidth, m_SwatchHeight, m_SwatchMin.xyY);
m_SwatchMax.Texture = BuildSwatch(m_SwatchWidth, m_SwatchHeight, m_SwatchMax.xyY);
m_SwatchAvg.Texture = BuildSwatch(m_SwatchWidth, m_SwatchHeight, m_SwatchAvg.xyY);
// Rebuild custom swatches
foreach (CustomSwatch CS in m_CustomSwatches)
{
CS.Texture = BuildSwatch(m_SwatchWidth, m_SwatchHeight, CS.xyY);
}
//////////////////////////////////////////////////////////////////////////
// Feed some purely informational shot infos to the main texture, probably won't be saved anyway...
m_Texture.HasValidShotInfo = true;
m_Texture.ISOSpeed = _Parms.ISOSpeed;
m_Texture.ShutterSpeed = _Parms.ShutterSpeed;
m_Texture.Aperture = _Parms.Aperture;
}
/// <summary>
/// Prepares the interpolated calibration table to process the pixels in an image shot with the specified shot infos
/// </summary>
/// <param name="_ISOSpeed"></param>
/// <param name="_ShutterSpeed"></param>
/// <param name="_Aperture"></param>
public void PrepareCalibrationFor(float _ISOSpeed, float _ShutterSpeed, float _Aperture)
{
if (m_RootNode == null)
{
throw new Exception("Calibration grid hasn't been built: did you provide a valid database path? Does the path contain camera calibration data?");
}
if (IsPreparedFor(_ISOSpeed, _ShutterSpeed, _Aperture))
{
return; // Already prepared!
}
//////////////////////////////////////////////////////////////////////////
// Find the 8 nodes encompassing our values
// I'm making the delicate assumption that, although the starting node is chosen on the
// condition its EV values are strictly inferior to the target we're looking for, all
// neighbor nodes should satisfy the condition they're properly placed.
//
// This is true for the direct neighbors +X, +Y, +Z that are immediately above target values
// but for example, neighbor (+X +Y) may have a very bad aperture value (Z) that may be
// above the target aperture...
//
// Let's hope the user won't provide too fancy calibrations...
// (anyway, interpolants are clamped in [0,1] so there's no risk of overshooting)
//
ImageUtility.float3 EV;
GridNode.Convert2EV(_ISOSpeed, _ShutterSpeed, _Aperture, out EV.x, out EV.y, out EV.z);
// Find the start node
GridNode StartNode = FindStartNode(EV.x, EV.y, EV.z);
m_InterpolationStartNode = StartNode;
// Build the 8 grid nodes from it
GridNode[,,] Grid = new GridNode[2, 2, 2];
Grid[0, 0, 0] = StartNode;
Grid[1, 0, 0] = StartNode.m_Neighbors[0][1] != null ? StartNode.m_Neighbors[0][1] : StartNode; // +X
Grid[0, 1, 0] = StartNode.m_Neighbors[1][1] != null ? StartNode.m_Neighbors[1][1] : StartNode; // +Y
Grid[0, 0, 1] = StartNode.m_Neighbors[2][1] != null ? StartNode.m_Neighbors[2][1] : StartNode; // +Z
Grid[1, 1, 0] = Grid[1, 0, 0].m_Neighbors[1][1] != null ? Grid[1, 0, 0].m_Neighbors[1][1] : Grid[1, 0, 0]; // +X +Y
Grid[0, 1, 1] = Grid[0, 1, 0].m_Neighbors[2][1] != null ? Grid[0, 1, 0].m_Neighbors[2][1] : Grid[0, 1, 0]; // +Y +Z
Grid[1, 0, 1] = Grid[0, 0, 1].m_Neighbors[0][1] != null ? Grid[0, 0, 1].m_Neighbors[0][1] : Grid[0, 0, 1]; // +X +Z
Grid[1, 1, 1] = Grid[1, 1, 0].m_Neighbors[2][1] != null ? Grid[1, 1, 0].m_Neighbors[2][1] : Grid[1, 1, 0]; // +X +Y +Z
//////////////////////////////////////////////////////////////////////////
// Create the successive interpolants for trilinear interpolation
//
// Assume we interpolate on X first (ISO speed), so we need 4 distinct values
ImageUtility.float4 tX = new ImageUtility.float4(
Math.Max(0.0f, Math.Min(1.0f, (EV.x - Grid[0, 0, 0].m_EV_ISOSpeed) / Math.Max(1e-6f, Grid[1, 0, 0].m_EV_ISOSpeed - Grid[0, 0, 0].m_EV_ISOSpeed))), // Y=0 Z=0
Math.Max(0.0f, Math.Min(1.0f, (EV.x - Grid[0, 1, 0].m_EV_ISOSpeed) / Math.Max(1e-6f, Grid[1, 1, 0].m_EV_ISOSpeed - Grid[0, 1, 0].m_EV_ISOSpeed))), // Y=1 Z=0
Math.Max(0.0f, Math.Min(1.0f, (EV.x - Grid[0, 0, 1].m_EV_ISOSpeed) / Math.Max(1e-6f, Grid[1, 0, 1].m_EV_ISOSpeed - Grid[0, 0, 1].m_EV_ISOSpeed))), // Y=0 Z=1
Math.Max(0.0f, Math.Min(1.0f, (EV.x - Grid[0, 1, 1].m_EV_ISOSpeed) / Math.Max(1e-6f, Grid[1, 1, 1].m_EV_ISOSpeed - Grid[0, 1, 1].m_EV_ISOSpeed))) // Y=1 Z=1
);
ImageUtility.float4 rX = new ImageUtility.float4(1.0f - tX.x, 1.0f - tX.y, 1.0f - tX.z, 1.0f - tX.w);
// Compute the 4 interpolated shutter speeds & apertures
ImageUtility.float4 ShutterSpeedsX = new ImageUtility.float4(
rX.x * Grid[0, 0, 0].m_EV_ShutterSpeed + tX.x * Grid[1, 0, 0].m_EV_ShutterSpeed, // Y=0 Z=0
rX.y * Grid[0, 1, 0].m_EV_ShutterSpeed + tX.y * Grid[1, 1, 0].m_EV_ShutterSpeed, // Y=1 Z=0
rX.z * Grid[0, 0, 1].m_EV_ShutterSpeed + tX.z * Grid[1, 0, 1].m_EV_ShutterSpeed, // Y=0 Z=1
rX.w * Grid[0, 1, 1].m_EV_ShutterSpeed + tX.w * Grid[1, 1, 1].m_EV_ShutterSpeed // Y=1 Z=1
);
ImageUtility.float4 AperturesX = new ImageUtility.float4(
rX.x * Grid[0, 0, 0].m_EV_Aperture + tX.x * Grid[1, 0, 0].m_EV_Aperture, // Y=0 Z=0
rX.y * Grid[0, 1, 0].m_EV_Aperture + tX.y * Grid[1, 1, 0].m_EV_Aperture, // Y=1 Z=0
rX.z * Grid[0, 0, 1].m_EV_Aperture + tX.z * Grid[1, 0, 1].m_EV_Aperture, // Y=0 Z=1
rX.w * Grid[0, 1, 1].m_EV_Aperture + tX.w * Grid[1, 1, 1].m_EV_Aperture // Y=1 Z=1
);
// Next we interpolate on Y (Shutter speed), so we need 2 distinct values
ImageUtility.float2 tY = new ImageUtility.float2(
Math.Max(0.0f, Math.Min(1.0f, (EV.y - ShutterSpeedsX.x) / Math.Max(1e-6f, ShutterSpeedsX.y - ShutterSpeedsX.x))), // Z=0
Math.Max(0.0f, Math.Min(1.0f, (EV.y - ShutterSpeedsX.z) / Math.Max(1e-6f, ShutterSpeedsX.w - ShutterSpeedsX.z))) // Z=1
);
ImageUtility.float2 rY = new ImageUtility.float2(1.0f - tY.x, 1.0f - tY.y);
// Compute the 2 apertures
ImageUtility.float2 AperturesY = new ImageUtility.float2(
rY.x * AperturesX.x + tY.x * AperturesX.y,
rY.y * AperturesX.z + tY.y * AperturesX.w
);
// Finally, we interpolate on Z (Aperture), we need only 1 single value
float tZ = Math.Max(0.0f, Math.Min(1.0f, (EV.z - AperturesY.x) / Math.Max(1e-6f, AperturesY.y - AperturesY.x)));
float rZ = 1.0f - tZ;
//////////////////////////////////////////////////////////////////////////
// Create the special camera calibration that is the result of the interpolation of the 8 nearest ones in the grid
m_InterpolatedCalibration = new CameraCalibration();
m_InterpolatedCalibration.m_CameraShotInfos.m_ISOSpeed = _ISOSpeed;
m_InterpolatedCalibration.m_CameraShotInfos.m_ShutterSpeed = _ShutterSpeed;
m_InterpolatedCalibration.m_CameraShotInfos.m_Aperture = _Aperture;
for (int ProbeIndex = 0; ProbeIndex < REQUIRED_PROBES_COUNT; ProbeIndex++)
{
CameraCalibration.Probe TargetProbe = m_InterpolatedCalibration.m_Reflectances[ProbeIndex];
float L000 = Grid[0, 0, 0].m_CameraCalibration.m_Reflectances[ProbeIndex].m_LuminanceMeasured;
float L100 = Grid[1, 0, 0].m_CameraCalibration.m_Reflectances[ProbeIndex].m_LuminanceMeasured;
float L010 = Grid[0, 1, 0].m_CameraCalibration.m_Reflectances[ProbeIndex].m_LuminanceMeasured;
float L110 = Grid[1, 1, 0].m_CameraCalibration.m_Reflectances[ProbeIndex].m_LuminanceMeasured;
float L001 = Grid[0, 0, 1].m_CameraCalibration.m_Reflectances[ProbeIndex].m_LuminanceMeasured;
float L101 = Grid[1, 0, 1].m_CameraCalibration.m_Reflectances[ProbeIndex].m_LuminanceMeasured;
float L011 = Grid[0, 1, 1].m_CameraCalibration.m_Reflectances[ProbeIndex].m_LuminanceMeasured;
float L111 = Grid[1, 1, 1].m_CameraCalibration.m_Reflectances[ProbeIndex].m_LuminanceMeasured;
// Interpolate on X (ISO speed)
float L00 = rX.x * L000 + tX.x * L100;
float L10 = rX.y * L010 + tX.y * L110;
float L01 = rX.z * L001 + tX.z * L101;
float L11 = rX.w * L011 + tX.w * L111;
// Interpolate on Y (shutter speed)
float L0 = rY.x * L00 + tY.x * L10;
float L1 = rY.y * L01 + tY.y * L11;
// Interpolate on Z (aperture)
float L = rZ * L0 + tZ * L1;
TargetProbe.m_IsAvailable = true;
TargetProbe.m_LuminanceMeasured = L;
}
// Fill missing values
m_InterpolatedCalibration.UpdateAllLuminances();
// Reset white reflectance reference because it was set for another setup
WhiteReflectanceReference = new ImageUtility.float3(0, 0, -1);
}
private void UpdateCropRectangleVertices()
{
m_CropRectangleAxisX = new ImageUtility.float2( (float) Math.Cos( m_CropRectangleRotation ), -(float) Math.Sin( m_CropRectangleRotation ) );
m_CropRectangleAxisY = new ImageUtility.float2( -(float) Math.Sin( m_CropRectangleRotation ), -(float) Math.Cos( m_CropRectangleRotation ) );
RectangleF ImageRect = ImageClientRect();
m_ClientCropRectangleCenter = ImageUV2Client( m_CropRectangleCenter );
ImageUtility.float2[] Vertices = new ImageUtility.float2[4] {
m_CropRectangleCenter - m_CropRectangleHalfSize.x * m_CropRectangleAxisX + m_CropRectangleHalfSize.y * m_CropRectangleAxisY,
m_CropRectangleCenter + m_CropRectangleHalfSize.x * m_CropRectangleAxisX + m_CropRectangleHalfSize.y * m_CropRectangleAxisY,
m_CropRectangleCenter - m_CropRectangleHalfSize.x * m_CropRectangleAxisX - m_CropRectangleHalfSize.y * m_CropRectangleAxisY,
m_CropRectangleCenter + m_CropRectangleHalfSize.x * m_CropRectangleAxisX - m_CropRectangleHalfSize.y * m_CropRectangleAxisY,
};
for ( int i=0; i < 4; i++ )
m_ClientCropRectangleVertices[i] = ImageUV2Client( Vertices[i] );
}
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
m_MousePositionCurrent = e.Location;
if (m_MouseButtonsDown == MouseButtons.None)
{
m_ButtonDownMousePosition = e.Location;
m_ButtonDownCropRectangleCenter = m_CropRectangleCenter;
m_ButtonDownCropRectangleHalfSize = m_CropRectangleHalfSize;
m_ButtonDownCropRectangleRotation = m_CropRectangleRotation;
m_ButtonDownCropRectangleAxisX = m_CropRectangleAxisX;
m_ButtonDownCropRectangleAxisY = m_CropRectangleAxisY;
m_ButtonDownClientCropRectangleCenter = m_ClientCropRectangleCenter;
m_ButtonDownClientCropRectangleVertices = new PointF[4] {
m_ClientCropRectangleVertices[0],
m_ClientCropRectangleVertices[1],
m_ClientCropRectangleVertices[2],
m_ClientCropRectangleVertices[3],
};
}
switch (m_ManipulationState)
{
case MANIPULATION_STATE.CROP_RECTANGLE:
{ // Take care of crop rectangle manipulation
if (!m_CropRectangleManipulationStarted)
{ // Update the cursor based on the hovered manipulation spot
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.NONE;
const float TOLERANCE = 8.0f;
PointF P = e.Location;
PointF TopLeftCorner2UV = new PointF(P.X - m_ClientCropRectangleVertices[0].X, P.Y - m_ClientCropRectangleVertices[0].Y);
PointF BottomRightCorner2UV = new PointF(P.X - m_ClientCropRectangleVertices[3].X, P.Y - m_ClientCropRectangleVertices[3].Y);
float Distance2Left = -TopLeftCorner2UV.X * m_CropRectangleAxisX.x - TopLeftCorner2UV.Y * m_CropRectangleAxisX.y;
float Distance2Top = TopLeftCorner2UV.X * m_CropRectangleAxisY.x + TopLeftCorner2UV.Y * m_CropRectangleAxisY.y;
float Distance2Right = BottomRightCorner2UV.X * m_CropRectangleAxisX.x + BottomRightCorner2UV.Y * m_CropRectangleAxisX.y;
float Distance2Bottom = -BottomRightCorner2UV.X * m_CropRectangleAxisY.x - BottomRightCorner2UV.Y * m_CropRectangleAxisY.y;
// Stretch
if (Math.Abs(Distance2Left) < TOLERANCE)
{
if (Math.Abs(Distance2Top) < TOLERANCE)
{
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.CORNER_TOP_LEFT;
}
else if (Math.Abs(Distance2Bottom) < TOLERANCE)
{
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.CORNER_BOTTOM_LEFT;
}
else
{
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.LEFT;
}
}
else if (Math.Abs(Distance2Right) < TOLERANCE)
{
if (Math.Abs(Distance2Top) < TOLERANCE)
{
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.CORNER_TOP_RIGHT;
}
else if (Math.Abs(Distance2Bottom) < TOLERANCE)
{
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.CORNER_BOTTOM_RIGHT;
}
else
{
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.RIGHT;
}
}
else if (Math.Abs(Distance2Top) < TOLERANCE)
{
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.TOP;
}
else if (Math.Abs(Distance2Bottom) < TOLERANCE)
{
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.BOTTOM;
}
// Rotate
else if (Distance2Top > TOLERANCE && Distance2Right > TOLERANCE)
{
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.ROTATE_TOP_RIGHT;
}
else if (Distance2Top > TOLERANCE && Distance2Left > TOLERANCE)
{
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.ROTATE_TOP_LEFT;
}
else if (Distance2Bottom > TOLERANCE && Distance2Right > TOLERANCE)
{
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.ROTATE_BOTTOM_RIGHT;
}
else if (Distance2Bottom > TOLERANCE && Distance2Left > TOLERANCE)
{
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.ROTATE_BOTTOM_LEFT;
}
else if (Distance2Left < 0.0f && Distance2Right < 0.0f && Distance2Bottom < 0.0f && Distance2Top < 0.0f)
{
m_CropRectangleManipulatedSpot = CROP_RECTANGLE_SPOT.CENTER;
}
// Update cursor accordingly
switch (m_CropRectangleManipulatedSpot)
{
case CROP_RECTANGLE_SPOT.NONE: Cursor = Cursors.Default; break;
case CROP_RECTANGLE_SPOT.LEFT: Cursor = Cursors.SizeWE; break;
case CROP_RECTANGLE_SPOT.RIGHT: Cursor = Cursors.SizeWE; break;
case CROP_RECTANGLE_SPOT.TOP: Cursor = Cursors.SizeNS; break;
case CROP_RECTANGLE_SPOT.BOTTOM: Cursor = Cursors.SizeNS; break;
case CROP_RECTANGLE_SPOT.CORNER_TOP_LEFT: Cursor = Cursors.SizeNWSE; break;
case CROP_RECTANGLE_SPOT.CORNER_BOTTOM_RIGHT: Cursor = Cursors.SizeNWSE; break;
case CROP_RECTANGLE_SPOT.CORNER_TOP_RIGHT: Cursor = Cursors.SizeNESW; break;
case CROP_RECTANGLE_SPOT.CORNER_BOTTOM_LEFT: Cursor = Cursors.SizeNESW; break;
case CROP_RECTANGLE_SPOT.ROTATE_TOP_LEFT:
case CROP_RECTANGLE_SPOT.ROTATE_TOP_RIGHT:
case CROP_RECTANGLE_SPOT.ROTATE_BOTTOM_LEFT:
case CROP_RECTANGLE_SPOT.ROTATE_BOTTOM_RIGHT:
Cursor = Cursors.Hand;
break;
case CROP_RECTANGLE_SPOT.CENTER:
Cursor = Cursors.Hand;
break;
}
}
else
{ // Handle actual manipulation
ImageUtility.float2 CurClientPos = new ImageUtility.float2(e.X, e.Y);
ImageUtility.float2 OldClientPos = new ImageUtility.float2(m_ButtonDownMousePosition.X, m_ButtonDownMousePosition.Y);
ImageUtility.float2 OldClientCenter = new ImageUtility.float2(m_ButtonDownClientCropRectangleCenter.X, m_ButtonDownClientCropRectangleCenter.Y);
ImageUtility.float2 OldCenter = m_ButtonDownCropRectangleCenter;
ImageUtility.float2 OldHalfSize = m_ButtonDownCropRectangleHalfSize;
ImageUtility.float2 OldAxisX = m_ButtonDownCropRectangleAxisX;
ImageUtility.float2 OldAxisY = m_ButtonDownCropRectangleAxisY;
ImageUtility.float2[] OldVertices = new ImageUtility.float2[4] {
OldCenter - OldHalfSize.x * OldAxisX + OldHalfSize.y * OldAxisY,
OldCenter + OldHalfSize.x * OldAxisX + OldHalfSize.y * OldAxisY,
OldCenter - OldHalfSize.x * OldAxisX - OldHalfSize.y * OldAxisY,
OldCenter + OldHalfSize.x * OldAxisX - OldHalfSize.y * OldAxisY,
};
ImageUtility.float2 CurCenter = OldCenter;
ImageUtility.float2 CurHalfSize = OldHalfSize;
ImageUtility.float2 CurAxisX = OldAxisX;
ImageUtility.float2 CurAxisY = OldAxisY;
RectangleF ImageRect = ImageClientRect(); // The image's rectangle in client space
switch (m_CropRectangleManipulatedSpot)
{
case CROP_RECTANGLE_SPOT.LEFT:
case CROP_RECTANGLE_SPOT.RIGHT:
{
ImageUtility.float2 Center2OldPos = OldClientPos - OldClientCenter;
float OldDistance2Edge = Center2OldPos.Dot(OldAxisX);
ImageUtility.float2 Center2CurPos = CurClientPos - OldClientCenter;
float CurDistance2Edge = Center2CurPos.Dot(OldAxisX);
float Delta = CurDistance2Edge - OldDistance2Edge; // This is the amount (in client space) we need to move the left/right border
float DeltaUV = Delta / ImageRect.Height; // This is the same amount in UV space
DeltaUV *= 0.5f; // We're dealing with halves all along
// Increase width of that amount
CurHalfSize.x = OldHalfSize.x + (m_CropRectangleManipulatedSpot == CROP_RECTANGLE_SPOT.LEFT ? -1 : 1) * DeltaUV;
// Move center along the X axis
if (m_CropRectangleManipulatedSpot == CROP_RECTANGLE_SPOT.LEFT)
{ // Keep right fixed, move to the left
ImageUtility.float2 Right = OldCenter + OldHalfSize.x * OldAxisX;
ImageUtility.float2 Left = Right - 2.0f * CurHalfSize.x * OldAxisX;
CurCenter = 0.5f * (Right + Left);
}
else
{ // Keep left fixed, move to the right
ImageUtility.float2 Left = OldCenter - OldHalfSize.x * OldAxisX;
ImageUtility.float2 Right = Left + 2.0f * CurHalfSize.x * OldAxisX;
CurCenter = 0.5f * (Right + Left);
}
break;
}
case CROP_RECTANGLE_SPOT.TOP:
case CROP_RECTANGLE_SPOT.BOTTOM:
{
ImageUtility.float2 Center2OldPos = OldClientPos - OldClientCenter;
float OldDistance2Edge = Center2OldPos.Dot(OldAxisY);
ImageUtility.float2 Center2CurPos = CurClientPos - OldClientCenter;
float CurDistance2Edge = Center2CurPos.Dot(OldAxisY);
float Delta = CurDistance2Edge - OldDistance2Edge; // This is the amount (in client space) we need to move the left/right border
float DeltaUV = Delta / ImageRect.Height; // This is the same amount in UV space
DeltaUV *= 0.5f; // We're dealing with halves all along
// Increase height of that amount
CurHalfSize.y = OldHalfSize.y + (m_CropRectangleManipulatedSpot == CROP_RECTANGLE_SPOT.TOP ? 1 : -1) * DeltaUV;
// Move center along the X axis
if (m_CropRectangleManipulatedSpot == CROP_RECTANGLE_SPOT.TOP)
{ // Keep bottom fixed, move up
ImageUtility.float2 Bottom = OldCenter - OldHalfSize.y * OldAxisY;
ImageUtility.float2 Top = Bottom + 2.0f * CurHalfSize.y * OldAxisY;
CurCenter = 0.5f * (Bottom + Top);
}
else
{ // Keep top fixed, move down
ImageUtility.float2 Top = OldCenter + OldHalfSize.y * OldAxisY;
ImageUtility.float2 Bottom = Top - 2.0f * CurHalfSize.y * OldAxisY;
CurCenter = 0.5f * (Bottom + Top);
}
break;
}
case CROP_RECTANGLE_SPOT.CORNER_TOP_LEFT:
case CROP_RECTANGLE_SPOT.CORNER_TOP_RIGHT:
case CROP_RECTANGLE_SPOT.CORNER_BOTTOM_LEFT:
case CROP_RECTANGLE_SPOT.CORNER_BOTTOM_RIGHT:
{
ImageUtility.float2 Delta = CurClientPos - OldClientPos;
ImageUtility.float2 DeltaUV = (1.0f / ImageRect.Height) * Delta;
ImageUtility.float2 Corner = new ImageUtility.float2(), OppositeCorner = new ImageUtility.float2();
switch (m_CropRectangleManipulatedSpot)
{
case CROP_RECTANGLE_SPOT.CORNER_TOP_LEFT: Corner = OldVertices[0]; OppositeCorner = OldVertices[3]; break; // Keep bottom right fixed
case CROP_RECTANGLE_SPOT.CORNER_TOP_RIGHT: Corner = OldVertices[1]; OppositeCorner = OldVertices[2]; break; // Keep bottom left fixed
case CROP_RECTANGLE_SPOT.CORNER_BOTTOM_LEFT: Corner = OldVertices[2]; OppositeCorner = OldVertices[1]; break; // Keep top right fixed
case CROP_RECTANGLE_SPOT.CORNER_BOTTOM_RIGHT: Corner = OldVertices[3]; OppositeCorner = OldVertices[0]; break; // Keep top left fixed
}
// Move corner
Corner += DeltaUV;
// Compute new center
CurCenter = new ImageUtility.float2(0.5f * (Corner.x + OppositeCorner.x), 0.5f * (Corner.y + OppositeCorner.y));
// Compute new size
CurHalfSize = new ImageUtility.float2(Math.Abs((Corner - CurCenter).Dot(OldAxisX)), Math.Abs((Corner - CurCenter).Dot(OldAxisY)));
break;
}
case CROP_RECTANGLE_SPOT.ROTATE_TOP_LEFT:
case CROP_RECTANGLE_SPOT.ROTATE_TOP_RIGHT:
case CROP_RECTANGLE_SPOT.ROTATE_BOTTOM_LEFT:
case CROP_RECTANGLE_SPOT.ROTATE_BOTTOM_RIGHT:
{
ImageUtility.float2 Center2OldPos = OldClientPos - OldClientCenter;
ImageUtility.float2 Center2CurPos = CurClientPos - OldClientCenter;
float OldAngle = (float)Math.Atan2(-Center2OldPos.y, Center2OldPos.x);
float CurAngle = (float)Math.Atan2(-Center2CurPos.y, Center2CurPos.x);
m_CropRectangleRotation = m_ButtonDownCropRectangleRotation + CurAngle - OldAngle;
CurAxisX = new ImageUtility.float2((float)Math.Cos(m_CropRectangleRotation), -(float)Math.Sin(m_CropRectangleRotation));
CurAxisY = new ImageUtility.float2(-(float)Math.Sin(m_CropRectangleRotation), -(float)Math.Cos(m_CropRectangleRotation));
break;
}
case CROP_RECTANGLE_SPOT.CENTER:
{
ImageUtility.float2 Delta = CurClientPos - OldClientPos;
ImageUtility.float2 DeltaUV = (1.0f / ImageRect.Height) * Delta;
CurCenter = OldCenter + DeltaUV;
break;
}
}
CurHalfSize.x = Math.Max(1e-3f, CurHalfSize.x);
CurHalfSize.y = Math.Max(1e-3f, CurHalfSize.y);
// Constrain vertices to the image
ImageUtility.float2[] Vertices = BuildClipVertices(CurCenter, CurHalfSize, CurAxisX, CurAxisY);
float MinX = 0.5f * (1.0f - ImageAspectRatio);
float MaxX = 0.5f * (1.0f + ImageAspectRatio);
for (int i = 0; i < 4; i++)
{
bool Rebuild = false;
if (Vertices[i].x < MinX)
{
Vertices[i].x = MinX;
Rebuild = true;
}
if (Vertices[i].x > MaxX)
{
Vertices[i].x = MaxX;
Rebuild = true;
}
if (Vertices[i].y < 0.0f)
{
Vertices[i].y = 0.0f;
Rebuild = true;
}
if (Vertices[i].y > 1.0f)
{
Vertices[i].y = 1.0f;
Rebuild = true;
}
if (!Rebuild)
{
continue;
}
ImageUtility.float2 OppositeVertex = Vertices[3 - i]; // This one is fixed
// Recompute center & half size
CurCenter = 0.5f * (OppositeVertex + Vertices[i]);
ImageUtility.float2 Delta = Vertices[i] - OppositeVertex;
CurHalfSize = 0.5f * new ImageUtility.float2(Math.Abs(Delta.Dot(CurAxisX)), Math.Abs(Delta.Dot(CurAxisY)));
// Rebuild new vertices
Vertices = BuildClipVertices(CurCenter, CurHalfSize, CurAxisX, CurAxisY);
}
m_CropRectangleCenter = CurCenter;
m_CropRectangleHalfSize = CurHalfSize;
// The crop rectangle has changed!
m_CropRectangleIsDefault = false;
// Repaint to update the crop rectangle
Invalidate();
}
break;
}
case MANIPULATION_STATE.CALIBRATION_TARGET:
{ // Take care of calibration manipulation
Cursor = Cursors.Cross;
switch (m_CalibrationStage)
{
case CALIBRATION_STAGE.PICK_CENTER:
m_CalibrationCenter = Client2ImageUV_NoSquareAspectRatio(e.Location);
Invalidate();
break;
case CALIBRATION_STAGE.SET_RADIUS:
{
ImageUtility.float2 Temp = Client2ImageUV_NoSquareAspectRatio(e.Location);
m_CalibrationRadius = (float)Math.Sqrt((Temp.x - m_CalibrationCenter.x) * (Temp.x - m_CalibrationCenter.x) + (Temp.y - m_CalibrationCenter.y) * (Temp.y - m_CalibrationCenter.y));
Invalidate();
}
break;
}
break;
}
default:
Cursor = Cursors.Default;
break;
}
}
/// <summary>
/// Sets the crop rectangle to a specific value
/// </summary>
public void SetCropRectangle( ImageUtility.float2 _Center, ImageUtility.float2 _HalfSize, float _Rotation )
{
m_CropRectangleIsDefault = false;
m_CropRectangleCenter = _Center;
m_CropRectangleHalfSize = _HalfSize;
m_CropRectangleRotation = _Rotation;
Invalidate();
}
/// <summary>
/// Resets the crop rectangle to the entire image
/// </summary>
public void ResetCropRectangle()
{
m_CropRectangleIsDefault = true;
if ( m_Image == null )
return;
m_CropRectangleCenter = new ImageUtility.float2( 0.5f, 0.5f );
m_CropRectangleHalfSize = new ImageUtility.float2( 0.5f * ImageAspectRatio, 0.5f );
m_CropRectangleRotation = 0.0f;
Invalidate();
}