OwnCursor Class Reference

#include <OwnCursor.hpp>

Public Member Functions
void	onKeyStateChanged (int key, bool pressed)
	OwnCursor (Application *app)
void	update (double time, double timeDelta)
void	draw (double time, double timeDelta)
void	setMinScale (float min)
void	setMaxScale (float max)
float	getScale ()
float	getCushion ()
bool	getScaleFunction ()
bool	getCursorIcon ()
vec2	calculateCursorPosInVisualSpace (vec2 cursorPosBeforeMove, vec2 const &deltaMotorSpace)

Private Member Functions
vec2	calculateCursorMoveDeltaInVisualSpace (vec2 const &cursorPosBeforeMove, vec2 const &deltaMotorSpace)
void	toggleImage ()
void	toggleScaleFunction ()
void	updateCushionFactor (float value)

Private Attributes
Application *	m_app
Texture *	m_tex_arrow
Texture *	m_tex_hand
double	m_lastSpF
double	m_lastMeasure
bool	m_active_hand
bool	m_scale_linear
float	m_scale
float	m_minScale
float	m_maxScale
bool	m_blink
float	m_cushion_factor

Detailed Description

The OwnCursor-object draws the cursor-icon at the freshly calculated visual-space position. Parameters of the scale-function, to manipulate the movement from motor-space to visual-space, can be adjusted in OwnCursor-object.

Definition at line 9 of file OwnCursor.hpp.

Constructor & Destructor Documentation

OwnCursor

(

Application *

app

)

Constructs a ownCursor-object.

Parameters

app	The global application.

Definition at line 3 of file OwnCursor.cpp.

Member Function Documentation

vec2 calculateCursorMoveDeltaInVisualSpace ( vec2 const &  cursorPosBeforeMove, vec2 const &  deltaMotorSpace  )

private

Calculates the new cursor-position in visual space. To scale the cursor uniformly, this methode is called several times with an offset vector of length one, until the whole motor-offset vector has ben processed.

Parameters

cursorPosBeforeMove	The current cursor-position in visual space
deltaMotorSpace	Part of the cursor-offset in motor space with length of one

Returns

The updated cursor-position in visual space

Definition at line 71 of file OwnCursor.cpp.

vec2 calculateCursorPosInVisualSpace	(	vec2	cursorPosBeforeMove,
		vec2 const &	deltaMotorSpace
	)

Calculates the new cursor-position in visual space and in case of a cursor-movement updates the current cursor-position.

Parameters

cursorPosBeforeMove	The last cursor-position
deltaMotorSpace	The cursor-offset since the last frame in motor space

Returns

The new position of the cursor in visual space

Definition at line 48 of file OwnCursor.cpp.

void draw	(	double	time,
		double	timeDelta
	)

Draws the cursor with the current cursor-icon. The color and the scale of the cursor are scaled according to the scale-factor.

Parameters

time	The absolute frame time
timeDelta	Time since the last frame

Definition at line 118 of file OwnCursor.cpp.

bool getCursorIcon ( )

inline

Accessor to the current cursor-icon.

Returns

The current cursor-icon

Definition at line 85 of file OwnCursor.hpp.

float getCushion ( )

inline

Accessor to the cushion factor.

Returns

The cushion-factor

Definition at line 75 of file OwnCursor.hpp.

float getScale ( )

inline

Accessor to the scale factor.

Returns

The scale-factor

Definition at line 70 of file OwnCursor.hpp.

bool getScaleFunction ( )

inline

Accessor to the current scale-function.

Returns

The current scale-function

Definition at line 80 of file OwnCursor.hpp.

void onKeyStateChanged	(	int	key,
		bool	pressed
	)

Callback for key-state-changes. Toggles the scale-function on F5-key (linear / inverse). Toggles the cursor-icon on F6-key (arrow / hand). Decrease cushion-factor on F7-key, by -0.05. Increase cushion-facotr on F8-key, by +0.05.

Parameters

key	The key
pressed	Wheter the key is pressed or released

Definition at line 34 of file OwnCursor.cpp.

void setMaxScale

(

float

max

)

Accessor to the upper bound of the scale-factor.

Parameters

max	The new uppper bound for the scale-factor

void setMinScale

(

float

min

)

Accessor to the lower bound of the scale-factor.

Parameters

min	The new lower bound for the scale-factor

void toggleImage ( )

private

Switches the actual cursor-icon.

Definition at line 19 of file OwnCursor.cpp.

void toggleScaleFunction ( )

private

Switches the actual scale-function.

Definition at line 24 of file OwnCursor.cpp.

void update	(	double	time,
		double	timeDelta
	)

Updates the ownCursor-object. Toggles m_blink every 0.3sec

Parameters

time	The absolute frame time
timeDelta	Time since the last frame

Definition at line 106 of file OwnCursor.cpp.

void updateCushionFactor ( float  value )

private

Accessor to the cushion factor

Parameters

value

The new cushion factor

Definition at line 29 of file OwnCursor.cpp.

Member Data Documentation

bool m_active_hand

private

Wheter the cursor-icon has changed since the last frame

Definition at line 16 of file OwnCursor.hpp.

Application* m_app

private

The global application

Definition at line 11 of file OwnCursor.hpp.

bool m_blink

private

Wheter the active cursor-icon blink has changed since the last frame

Definition at line 21 of file OwnCursor.hpp.

float m_cushion_factor

private

The cushion-factor to manipulate the scaling-factor

Definition at line 22 of file OwnCursor.hpp.

double m_lastMeasure

private

Timestamp of the last measure

Definition at line 15 of file OwnCursor.hpp.

double m_lastSpF

private

The last measured seconds per frame

Definition at line 14 of file OwnCursor.hpp.

float m_maxScale

private

The upper bound for the scale-factor

Definition at line 20 of file OwnCursor.hpp.

float m_minScale

private

The lower bound for the scale-factor

Definition at line 19 of file OwnCursor.hpp.

float m_scale

private

The scale-factor to accelerate or decelerate the cursor

Definition at line 18 of file OwnCursor.hpp.

bool m_scale_linear

private

Wheter the scale-function has changed since the last frame

Definition at line 17 of file OwnCursor.hpp.

Texture* m_tex_arrow

private

The arrow-texture for the cursor

Definition at line 12 of file OwnCursor.hpp.

Texture* m_tex_hand

private

The hand-texture for the cursor

Definition at line 13 of file OwnCursor.hpp.

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The documentation for this class was generated from the following files:

• src/OwnCursor.hpp
• src/OwnCursor.cpp