ResizingState Class Reference

Implements the Resizing state behavior for the Blob animation. More...

#include <resizing_state.h>

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Public Member Functions
void	Apply (std::vector< QPointF > &control_points, std::vector< QPointF > &velocity, QPointF &blob_center, const BlobConfig::BlobParameters &params) override
	Applies state-specific logic. Currently empty for ResizingState. The primary logic for this state is handled in HandleResize().
void	ApplyForce (const QVector2D &force, std::vector< QPointF > &velocity, QPointF &blob_center, const std::vector< QPointF > &control_points, double blob_radius) override
	Applies an external force to the blob, similar to the Moving state. The force applied to each control point's velocity is scaled based on its distance from the center. A portion of the force is also applied directly to the blob's center position. This is used by HandleResize to apply a force based on the size change.
void	HandleResize (std::vector< QPointF > &control_points, std::vector< QPointF > &target_points, std::vector< QPointF > &velocity, QPointF &blob_center, const QSize &old_size, const QSize &new_size)
	Handles the logic when a resize event occurs while in this state. Recalculates the blob's center based on the new size, shifts control points and target points accordingly, and applies a force based on the magnitude and direction of the size change.
	ResizingState ()
	Default constructor for ResizingState.
Public Member Functions inherited from BlobState
virtual	~BlobState ()=default
	Virtual destructor. Ensures proper cleanup when deleting derived state objects through a base class pointer.

Detailed Description

Implements the Resizing state behavior for the Blob animation.

This state is active when the application window is being resized. It primarily handles the adjustment of the blob's position and applies a force based on the size change to create a visual reaction. The Apply() method in this state currently does nothing, as the main logic is triggered by the HandleResize() method.

Constructor & Destructor Documentation

ResizingState()

ResizingState::ResizingState

(

)

Default constructor for ResizingState.

Member Function Documentation

Apply()

void ResizingState::Apply ( std::vector< QPointF > & control_points, std::vector< QPointF > & velocity, QPointF & blob_center, const BlobConfig::BlobParameters & params )

overridevirtual

Applies state-specific logic. Currently empty for ResizingState. The primary logic for this state is handled in HandleResize().

Parameters

control_points	Reference to the vector of current control point positions.
velocity	Reference to the vector of current control point velocities.
blob_center	Reference to the blob's center position.
params	Blob appearance parameters (read-only).

Implements BlobState.

ApplyForce()

void ResizingState::ApplyForce ( const QVector2D & force, std::vector< QPointF > & velocity, QPointF & blob_center, const std::vector< QPointF > & control_points, double blob_radius )

overridevirtual

Applies an external force to the blob, similar to the Moving state. The force applied to each control point's velocity is scaled based on its distance from the center. A portion of the force is also applied directly to the blob's center position. This is used by HandleResize to apply a force based on the size change.

Parameters

force	The external force vector to apply.
velocity	Reference to the vector of current control point velocities (modified).
blob_center	Reference to the blob's center position (modified).
control_points	Reference to the vector of current control point positions (read-only).
blob_radius	The current average radius of the blob (read-only).

Implements BlobState.

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HandleResize()

void ResizingState::HandleResize	(	std::vector< QPointF > &	control_points,
		std::vector< QPointF > &	target_points,
		std::vector< QPointF > &	velocity,
		QPointF &	blob_center,
		const QSize &	old_size,
		const QSize &	new_size )

Handles the logic when a resize event occurs while in this state. Recalculates the blob's center based on the new size, shifts control points and target points accordingly, and applies a force based on the magnitude and direction of the size change.

Parameters

control_points	Reference to the vector of current control point positions (modified).
target_points	Reference to the vector of target control point positions (modified).
velocity	Reference to the vector of current control point velocities (modified).
blob_center	Reference to the blob's center position (modified).
old_size	The size of the widget before the resize.
new_size	The size of the widget after the resize.

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

• src/blob/states/resizing_state.h
• src/blob/states/resizing_state.cpp