gg/vertice.go

package gg

import "github.com/hajimehoshi/ebiten/v2"
import "surdeus.su/core/gg/mx"

type EVertice = ebiten.Vertex

// Ebitens vector in better abstractions like Vectors.
type Vertice struct {
	Dst mx.Vector
	Src mx.Vector
	Color
}

// Convert the vertice into the Ebiten's type.
func (v Vertice) ToAPI() EVertice {
	r, g, b, a := v.RGBA()
	return EVertice {
		DstX: float32(v.Dst.X),
		DstY: float32(v.Dst.Y),
		SrcX: float32(v.Src.X),
		SrcY: float32(v.Src.Y),
		ColorR: float32(r)/(float32(MaxColorValue)),
		ColorG: float32(g)/(float32(MaxColorValue)),
		ColorB: float32(b)/(float32(MaxColorValue)),
		ColorA: float32(a)/(float32(MaxColorValue)),
	}
}

type Vertices []Vertice
func (vs Vertices) ToAPI() []EVertice {
	ret := make([]EVertice, len(vs))
	for i, v := range vs {
		ret[i] = v.ToAPI()
	}
	return ret
}