Hue rotatation effect

Use the hue rotate effect to alter the hue of an image by applying a color matrix based on the rotation angle.

The CLSID for this effect is CLSID_D2D1HueRotation.

• Example image
• Effect properties
• Output bitmap
• Requirements
• Related topics

Example image

The example here shows the input and output images of the hue rotate effect with a rotation angle of 270 degrees.

Before
After

ComPtr<ID2D1Effect> hueRotationEffect;
m_d2dContext->CreateEffect(CLSID_D2D1HueRotation, &hueRotationEffect);

hueRotationEffect->SetInput(0, bitmap);
hueRotationEffect->SetValue(D2D1_HUEROTATION_PROP_ANGLE, 270.0f);

m_d2dContext->BeginDraw();
m_d2dContext->DrawImage(hueRotationEffect.Get());
m_d2dContext->EndDraw();

The effect calculates a color matrix based on the rotation angle (?) you specify with the D2D1_HUEROTATION_PROP_ANGLE property. Here are the matrix equations.

The matrix created depends only on the rotation angle. You can use the color matrix effect if you need a specific matrix.

Effect properties

Output bitmap

The output bitmap size is the same as the input bitmap size.

Requirements

Related topics

ID2D1Effect