TouchCalibration

Class

Source: TouchAdapter.h

Description

Calibration parameters for coordinate transformation

Supports:

• Scale factors for X/Y axes
• Offset adjustments
• Display rotation transformation
• Factory presets for common displays

Properties

Name	Type	Description
scaleX	float	X axis scale factor
scaleY	float	Y axis scale factor
offsetX	int16_t	X axis offset
offsetY	int16_t	Y axis offset
displayWidth	int16_t	Display width for clamping
displayHeight	int16_t	Display height for clamping

Methods

static TouchCalibration fromPreset(DisplayPreset preset)

Description:

Create calibration from preset

Parameters:

• preset: Display preset

Returns: TouchCalibration instance

static TouchCalibration forResolution(int16_t width, int16_t height)

Description:

Create calibration for custom resolution

Parameters:

• width: Display width
• height: Display height

Returns: TouchCalibration instance

TouchPoint transform(int16_t rawX, int16_t rawY, bool pressed, uint8_t id, uint32_t ts) const

Description:

Transform raw coordinates to screen space

Parameters:

• rawX: Raw X coordinate
• rawY: Raw Y coordinate
• pressed: Touch pressed state
• id: Touch ID
• ts: Timestamp

Returns: Transformed TouchPoint

void setRotation(TouchRotation rot)

Description:

Set rotation mode

void applyRotation(int16_t x, int16_t y, int16_t& outX, int16_t& outY) const

Description:

Apply rotation transformation to coordinates

Parameters:

• x: Input X coordinate
• y: Input Y coordinate
• outX: Output X coordinate
• outY: Output Y coordinate

TouchRotation inverted() const

Description:

Invert rotation (for opposite rotation)