model

type Collada struct {
	Geometries []Geometry `xml:"library_geometries>geometry"`
	Materials  []Material `xml:"library_materials>material"`
	Effects    []Effect   `xml:"library_effects>effect"`
}

type ColladaObject struct {
	Object
	// contains filtered or unexported fields
}

type Effect struct {
	ID       string     `xml:"id,attr"`
	Emission [4]float32 // The following need custom Unmarshaller
	Diffuse  [4]float32
	Specular float32
}

type EffectURL struct {
	URL string `xml:"url,attr"`
}

type Floats struct {
	ID   string
	Data []float32
}

type Geometry struct {
	Mesh Mesh   `xml:"mesh"`
	ID   string `xml:"id,attr"`
	Name string `xml:"name,attr"`
}

type Input struct {
	Semantic string `xml:"semantic,attr"`
	Source   string `xml:"source,attr"`
	Offset   uint   `xml:"offset,attr"`
	Set      uint   `xml:"set,attr"`
}

type Material struct {
	ID      string      `xml:"id,attr"`
	Name    string      `xml:"name,attr"`
	Effects []EffectURL `xml:"instance_effect"`
}

type Mesh struct {
	Source    []Source  `xml:"source"`
	Vertices  Vertices  `xml:"vertices"`
	Triangles Triangles `xml:"triangles"`
}

type Object interface {

	// SetPosition sets the object's current position in space.
	// Has to be thread-safe
	SetPosition(glm.Mat4)

	// Position gets the object's current position in space.
	// Has to be thread-safe
	Position() glm.Mat4

	// SetRotation sets the object's rotation matrix.
	// Has to be thread-safe
	SetRotation(glm.Mat4)

	// Rotation gets the object's rotation matrix.
	// Has to be thread-safe
	Rotation() glm.Mat4

	// Vertices returns the vertices for Renderer use,
	// so it has to match the descriptors exactly
	Vertices() []Vertex

	// Texture returns the raw data of a color texture image
	// for use in the Renderer
	Texture() image.Image
}

type Source struct {
	ID     string `xml:"id,attr"`
	Floats Floats `xml:"float_array"`
}

type Texture struct {
	Img    image.Image
	Raw    []uint8
	Bounds image.Rectangle
}

type Triangles struct {
	Count    int     `xml:"count,attr"`
	Material string  `xml:"material,attr"`
	Inputs   []Input `xml:"input"`
	Index    []int
}

type Uniform struct {
	View       glm.Mat4
	Projection glm.Mat4
}

type Vertex struct {
	Pos    glm.Vec3
	Normal glm.Vec3
	Color  glm.Vec4
	Tex    glm.Vec2
}

type Vertices struct {
	ID     string  `xml:"id,attr"`
	Inputs []Input `xml:"input"`
}