fix error obj loader

Author: Bernardo de Oliveira Bruning

loader/obj/cube.obj

@@ -2,34 +2,34 @@
 # www.blender.org
 mtllib cube.mtl
 o Cube
-v 1.000000 -1.000000 -1.000000
-v 1.000000 -1.000000 1.000000
-v -1.000000 -1.000000 1.000000
-v -1.000000 -1.000000 -1.000000
-v 1.000000 1.000000 -0.999999
-v 0.999999 1.000000 1.000001
-v -1.000000 1.000000 1.000000
-v -1.000000 1.000000 -1.000000
-vt 1.000000 0.333333
-vt 1.000000 0.666667
+v 100.000000 0.000000 0.000000
+v 100.000000 0.000000 100.000000
+v 0.000000 0.000000 100.000000
+v 0.000000 0.000000 0.000000
+v 100.000000 100.000000 -0.999999
+v 0.999999 100.000000 1.000001
+v 0.000000 100.000000 100.000000
+v 0.000000 100.000000 0.000000
+vt 100.000000 0.333333
+vt 100.000000 0.666667
 vt 0.666667 0.666667
 vt 0.666667 0.333333
 vt 0.666667 0.000000
 vt 0.000000 0.333333
 vt 0.000000 0.000000
 vt 0.333333 0.000000
-vt 0.333333 1.000000
-vt 0.000000 1.000000
+vt 0.333333 100.000000
+vt 0.000000 100.000000
 vt 0.000000 0.666667
 vt 0.333333 0.333333
 vt 0.333333 0.666667
-vt 1.000000 0.000000
-vn 0.000000 -1.000000 0.000000
-vn 0.000000 1.000000 0.000000
-vn 1.000000 0.000000 0.000000
-vn -0.000000 0.000000 1.000000
-vn -1.000000 -0.000000 -0.000000
-vn 0.000000 0.000000 -1.000000
+vt 100.000000 0.000000
+vn 0.000000 0.000000 0.000000
+vn 0.000000 100.000000 0.000000
+vn 100.000000 0.000000 0.000000
+vn -0.000000 0.000000 100.000000
+vn 0.000000 -0.000000 -0.000000
+vn 0.000000 0.000000 0.000000
 usemtl Material
 s off
 f 2/1/1 3/2/1 4/3/1

loader/obj/obj.go

@@ -49,8 +49,8 @@ func Load(r io.Reader) (render.Mesh, error) {
 				return render.Mesh{}, errors.New("Invalid load face")
 			}
 			a := strings.Split(obj[1], "/")
-			b := strings.Split(obj[1], "/")
-			c := strings.Split(obj[1], "/")
+			b := strings.Split(obj[2], "/")
+			c := strings.Split(obj[3], "/")
 
 			ai, err := strconv.Atoi(a[0])
 			if err != nil {

loader/obj/obj_test.go

@@ -1,9 +1,10 @@
 package obj_test
 
 import (
-	"github.com/bernardo-bruning/termrender/loader/obj"
 	"os"
 	"testing"
+
+	"github.com/bernardo-bruning/termrender/loader/obj"
 )
 
 func TestLoad(t *testing.T) {
@@ -12,8 +13,12 @@ func TestLoad(t *testing.T) {
 		t.Error(err)
 	}
 
-	_, err = obj.Load(file)
+	mesh, err := obj.Load(file)
 	if err != nil {
 		t.Error(err)
 	}
+
+	if len(mesh.Triangles) != 12 {
+		t.Error("Number of triangles is invalid!")
+	}
 }