Vkm::Engine::Transform Struct Reference

Local position, rotation and scale of an entity. More...

#include <transform.h>

Static Public Member Functions
static glm::mat4	computeModelMatrix (const Transform &transform)
	Compute the model matrix from transform data.
static Transform	fromModelMatrix (const glm::mat4 &model)
	Recover the TRS that computeModelMatrix() would have built model from.
static glm::mat4	computeView (const Transform &transform)
	Compute the view matrix from a transform.

Public Attributes
glm::vec3	position = {0.0f, 0.0f, 0.0f}
	Local position.
glm::quat	rotation = {1.0f, 0.0f, 0.0f, 0.0f}
	Local rotation.
glm::vec3	scale = {1.0f, 1.0f, 1.0f}
	Local scale.

Detailed Description

Local position, rotation and scale of an entity.

For pure quat/axis math, use core/math/ (rotation.h, axes.h).

Member Function Documentation

computeModelMatrix()

glm::mat4 Vkm::Engine::Transform::computeModelMatrix ( const Transform & transform )

inlinestatic

Compute the model matrix from transform data.

Parameters

transform

Local TRS to compose, without intermediate matrix products.

Returns

translation * rotation * scale.

fromModelMatrix()

Transform Vkm::Engine::Transform::fromModelMatrix ( const glm::mat4 & model )

inlinestatic

Recover the TRS that computeModelMatrix() would have built model from.

Exact for chains of translations, rotations and uniform scales. Shear (a non-uniformly scaled joint with a rotated child) is dropped. A zero-scaled axis returns zero scale, rotation from the surviving axes.

Parameters

model

Model matrix to decompose.

Returns

Its position, rotation and scale.

computeView()

glm::mat4 Vkm::Engine::Transform::computeView ( const Transform & transform )

inlinestatic

Compute the view matrix from a transform.

Parameters

transform

Camera pose; looks along its forward (-Z).

Returns

World-to-view matrix.

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The documentation for this struct was generated from the following file:

• ecs/component/core/transform.h