TransformComponent.h File Reference

#include "donner/base/Transform.h"
#include "donner/base/Vector2.h"
#include "donner/svg/core/CssTransform.h"
#include "donner/svg/properties/Property.h"

Include dependency graph for TransformComponent.h:

This graph shows which files directly or indirectly include this file:

Classes
struct	donner::svg::components::TransformComponent
	Stores the raw transform value set on an entity, for the transform presentation attribute. More...
struct	donner::svg::components::ComputedLocalTransformComponent
	Stores the computed local transform for an entity (after CSS cascade + percentage/viewport resolution). More...
struct	donner::svg::components::ComputedAbsoluteTransformComponent
	Stores the computed absolute transform for an entity — the full cascade of ancestor transforms composed together. More...

Namespaces
namespace	donner
	Top-level Donner namespace, which is split into different sub-namespaces such as donner::svg and donner::css.
namespace	donner::svg
	Donner SVG library, which can load, manipulate and render SVG files.
namespace	donner::svg::components
	Contains the implementation of the Donner ECS,.

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Class Documentation

donner::svg::components::TransformComponent

struct donner::svg::components::TransformComponent

Stores the raw transform value set on an entity, for the transform presentation attribute.

This can be sourced from the transform="..." XML attribute, or from the transform CSS property.

Collaboration diagram for donner::svg::components::TransformComponent:

Class Members
Property< CssTransform >	transform	Parsed value of the transform="…" presentation attribute / CSS transform property. Applied to entity-local coords, returns parent-space coords (i.e. parentFromEntity).

donner::svg::components::ComputedLocalTransformComponent

struct donner::svg::components::ComputedLocalTransformComponent

Stores the computed local transform for an entity (after CSS cascade + percentage/viewport resolution).

Collaboration diagram for donner::svg::components::ComputedLocalTransformComponent:

Class Members
Transform2d	parentFromEntity	Local transform that maps entity coords to the parent's coord system. Applying parentFromEntity to a point expressed in the entity's own coord system yields its position in the parent coord system. For <rect x=0 y=0 … transform="translate(100, 0)"/>, this matrix is Translate(100, 0), and the rect ends up at x=100 in the parent.
CssTransform	rawCssTransform	Raw CSS transform value, before resolving percentages relative to the viewport.
Vector2d	transformOrigin	Resolved transform origin in pixels.

donner::svg::components::ComputedAbsoluteTransformComponent

struct donner::svg::components::ComputedAbsoluteTransformComponent

Stores the computed absolute transform for an entity — the full cascade of ancestor transforms composed together.

Collaboration diagram for donner::svg::components::ComputedAbsoluteTransformComponent:

Class Members
Transform2d	worldFromEntity	Transform that maps entity-local coords through every ancestor's local transform to world (canvas) coords. This is the cascade of every parentFromEntity up the tree, composed together.
bool	worldIsCanvas = true	Set to false if this entity rebases the coordinate system and is not relative to the canvas (e.g. sub-document boundaries).