nCine::DrawableNode class

#include <nCine/Graphics/DrawableNode.h>

Base classes

class SceneNode

Base class for the transformation nodes hierarchy.

Derived classes

class BaseSprite

Base class for sprites.

Public types

enum class BlendingPreset { DISABLED, ALPHA, PREMULTIPLIED_ALPHA, ADDITIVE, MULTIPLY }

Presets for blending factors.

enum class BlendingFactor { ZERO, ONE, SRC_COLOR, ONE_MINUS_SRC_COLOR, DST_COLOR, ONE_MINUS_DST_COLOR, SRC_ALPHA, ONE_MINUS_SRC_ALPHA, DST_ALPHA, ONE_MINUS_DST_ALPHA, CONSTANT_COLOR, ONE_MINUS_CONSTANT_COLOR, CONSTANT_ALPHA, ONE_MINUS_CONSTANT_ALPHA, SRC_ALPHA_SATURATE }

OpenGL blending factors.

Public static variables

static const Vector2f AnchorCenter

static const Vector2f AnchorBottomLeft

static const Vector2f AnchorTopLeft

static const Vector2f AnchorBottomRight

static const Vector2f AnchorTopRight

Constructors, destructors, conversion operators

DrawableNode(SceneNode* parent, float xx, float yy)

Constructor for a drawable node with a parent and a specified relative position.

DrawableNode(SceneNode* parent, Vector2f position)

Constructor for a drawable node with a parent and a specified relative position as a vector.

DrawableNode(SceneNode* parent) explicit

Constructor for a drawable node with a parent and positioned in the relative origin.

DrawableNode()

Constructor for a drawable node with no parent and positioned in the origin.

~DrawableNode() override

DrawableNode(DrawableNode&&)

Default move constructor.

DrawableNode(const DrawableNode& other) protected

Protected copy constructor used to clone objects.

Public functions

auto operator=(DrawableNode&&) -> DrawableNode&

Default move assignment operator.

auto OnDraw(RenderQueue& renderQueue) -> bool override

Updates the draw command and adds it to the queue.

auto width() const -> float virtual

Returns the width of the node area.

auto height() const -> float virtual

Returns the height of the node area.

auto size() const -> Vector2f

Returns the size of the node area.

auto absWidth() const -> float virtual

Returns the absolute width of the node area.

auto absHeight() const -> float virtual

Returns the absolute height of the node area.

auto absSize() const -> Vector2f

Returns the absolute size of the node area.

auto anchorPoint() const -> Vector2f

Gets the transformation anchor point.

void setAnchorPoint(float xx, float yy)

Sets the transformation anchor point.

void setAnchorPoint(Vector2f point)

Sets the transformation anchor point with a Vector2f

auto isBlendingEnabled() const -> bool

Returns true if the node renders with blending enabled.

void setBlendingEnabled(bool blendingEnabled)

Sets the blending state for node rendering.

auto srcBlendingFactor() const -> BlendingFactor

Returns the source blending factor.

auto destBlendingFactor() const -> BlendingFactor

Returns the destination blending factor.

void setBlendingPreset(BlendingPreset blendingPreset)

Sets a blending preset for source and destination blending factors.

void setBlendingFactors(BlendingFactor srcBlendingFactor, BlendingFactor destBlendingFactor)

Sets a specific source and destination blending factors.

auto lastFrameRendered() const -> unsigned long int

Returns the last frame in which any of the viewports have rendered this node (node was not culled)

auto aabb() const -> Rectf

Returns the axis-aligned bounding box of the node area in the last frame.

Protected functions

void updateAabb() virtual

Calculates updated values for the AABB.

void updateCulling()

Called by each viewport update method to update a node culling state.

void shaderHasChanged() pure virtual

Performs the required tasks upon a change to the shader.

void updateRenderCommand() pure virtual

Updates the render command.

Protected variables

float width_

Node width in pixel.

float height_

Node height in pixel.

RenderCommand renderCommand_

The render command class associated with this node.

unsigned long int lastFrameRendered_

The last frame any viewports rendered this node.

Rectf aabb_

Axis-aligned bounding box of the node area.

Enum documentation