func (this *Mesh) VertexData() *Opengl.OpenGLVertexInfo {
vertexData := Opengl.OpenGLVertexInfo{}
for _, face := range this.Faces {
for idx, vIdx := range face.V {
c := this.Materials[face.Material].Diffuse
v := this.Vs[vIdx]
vdID := vertexData.NewVertex(v.X, v.Y, v.Z)
vertexData.SetColor(vdID, c.R, c.G, c.B, 1)
tex := this.Materials[face.Material].DiffuseTex
if len(face.UV) == 0 || tex == "" {
vertexData.SetMode(vdID, Opengl.NO_TEXTURE)
} else {
imgSec := Image.GetImageSection(GT.AssetsImages + tex)
if imgSec == nil {
Logging.Info("Cannot open: ", GT.AssetsImages+tex, " For Mat: ", face.Material)
}
// uvs
u := this.VTs[face.UV[idx]].U
v := this.VTs[face.UV[idx]].V
//normals
// x starts from left to right
locX := int(float32(imgSec.Bounds().Dx()) * u)
// y starts bottom to top so we need to convert.
locY := int(float32(imgSec.Bounds().Max.Y) - float32(imgSec.Bounds().Dy())*v)
locX += imgSec.Section.Min.X
locY += imgSec.Section.Min.Y
newU, newV := Image.GetUVFromPosition(image.Point{locX, locY})
vertexData.SetUV(vdID, newU, newV)
vertexData.SetMode(vdID, Opengl.TEXTURED)
// set normals
nX := this.VNs[face.VN[idx]].X
nY := this.VNs[face.VN[idx]].Y
nZ := this.VNs[face.VN[idx]].Z
vertexData.SetMNormal(vdID, nX, nY, nZ)
vertexData.SetWNormal(vdID, nX, nY, nZ)
}
}
}
return &vertexData
}
func (this *Image) VertexData() *Opengl.OpenGLVertexInfo {
v := Opengl.OpenGLVertexInfo{}
w := float32(this.Bounds().Dx())
h := float32(this.Bounds().Dy())
// first tri
idx := v.NewVertex(-0.5*w, -0.5*h, 1.0)
v.SetUV(idx, this.uvs[0], this.uvs[1])
v.SetAggregateId(idx, this.aggrId)
idx = v.NewVertex(0.5*w, -0.5*h, 1.0)
v.SetUV(idx, this.uvs[2], this.uvs[3])
v.SetAggregateId(idx, this.aggrId)
idx = v.NewVertex(-0.5*w, 0.5*h, 1.0)
v.SetUV(idx, this.uvs[6], this.uvs[7])
v.SetAggregateId(idx, this.aggrId)
// second tri
idx = v.NewVertex(-0.5*w, 0.5*h, 1.0)
v.SetUV(idx, this.uvs[6], this.uvs[7])
v.SetAggregateId(idx, this.aggrId)
idx = v.NewVertex(0.5*w, -0.5*h, 1.0)
v.SetUV(idx, this.uvs[2], this.uvs[3])
v.SetAggregateId(idx, this.aggrId)
idx = v.NewVertex(0.5*w, 0.5*h, 1.0)
v.SetUV(idx, this.uvs[4], this.uvs[5])
v.SetAggregateId(idx, this.aggrId)
return &v
}
