// vertex draws vertices.
// Used in classic render mode.
func (a *Attr) vertex(i int) {
i *= a.size
switch a.size {
case 2:
switch v := a.data.(type) {
case []int16:
gl.Vertex2s(v[i], v[i+1])
case []int32:
gl.Vertex2i(int(v[i]), int(v[i+1]))
case []float32:
gl.Vertex2f(v[i], v[i+1])
case []float64:
gl.Vertex2d(v[i], v[i+1])
}
case 3:
switch v := a.data.(type) {
case []int16:
gl.Vertex3s(v[i], v[i+1], v[i+2])
case []int32:
gl.Vertex3i(int(v[i]), int(v[i+1]), int(v[i+2]))
case []float32:
gl.Vertex3f(v[i], v[i+1], v[i+2])
case []float64:
gl.Vertex3d(v[i], v[i+1], v[i+2])
}
case 4:
switch v := a.data.(type) {
case []int16:
gl.Vertex4s(v[i], v[i+1], v[i+2], v[i+3])
case []int32:
gl.Vertex4i(int(v[i]), int(v[i+1]), int(v[i+2]), int(v[i+3]))
case []float32:
gl.Vertex4f(v[i], v[i+1], v[i+2], v[i+3])
case []float64:
gl.Vertex4d(v[i], v[i+1], v[i+2], v[i+3])
}
}
}
func LoadFileTypeObj(filename string) {
rdr := bufio.NewReader(os.Stdin)
switch line, err := rdr.ReadString('\n'); err {
case nil:
switch line {
case strings.HasPrefix(line, "v "): //vertex
verticies := strings.Split(line[2:], " ")
gl.Vertex4f(float64(verticies[0]), float64(verticies[1]), float64(verticies[2]), float64(1.0))
case strings.HasPrefix(line, "f "): //face
verticies := strings.Split(line[2:], " ")
gl.GLushort
a--
b--
c--
case strings.HasPrefix(line, "#"):
}
case io.EOF:
default:
}
}