Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Add obj format export option #62

Open
wants to merge 1 commit into
base: master
Choose a base branch
from
Open

Add obj format export option #62

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 4 additions & 0 deletions Assets/Editor/EditorConfig.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,10 @@ public class EditorConfig

public static Color DownloadButtonDisabledColor = new Color(0.45f, 0.45f, 0.45f);

public static Color ExportButtonEnabledColor = new Color(0.30f, 0.35f, 0.85f);

public static Color ExportButtonDisabledColor = new Color(0.45f, 0.45f, 0.45f);

public static Color RemoveButtonColor = new Color(0.5f, 0.5f, 0.5f);

public static GUILayoutOption SmallButtonWidth = GUILayout.Width(50.0f);
Expand Down
15 changes: 15 additions & 0 deletions Assets/Editor/MapzenMapEditor.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
using System.Linq;
using System.Collections.Generic;
using Mapzen;
using Mapzen.Unity;
using UnityEditor;

[CustomEditor(typeof(MapzenMap))]
Expand All @@ -11,6 +12,7 @@ public class MapzenMapEditor : Editor
private bool showTileDataFoldout = false;
private bool showRegionScaleRatioFoldout = false;


void OnEnable()
{
this.mapzenMap = (MapzenMap)target;
Expand Down Expand Up @@ -48,6 +50,19 @@ public override void OnInspectorGUI()

EditorConfig.ResetColor();

valid = mapzenMap.MeshFilters.Count > 0;

EditorConfig.SetColor(valid ?
EditorConfig.ExportButtonEnabledColor :
EditorConfig.ExportButtonDisabledColor);

if (GUILayout.Button("Export to OBJ"))
{
ModelExporter.OBJ(mapzenMap.MeshFilters, mapzenMap.RegionName);
}

EditorConfig.ResetColor();

SavePreferences();
}

Expand Down
151 changes: 151 additions & 0 deletions Assets/Editor/ModelExporter.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,151 @@
using System;
using System.Text;
using System.IO;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;

public class ModelExporter
{
private struct MaterialDesc
{
public string mainTexture;
public Color color;
}

public static void OBJ(List<MeshFilter> meshes, string filename)
{
int vertexOffset = 0;
int normalOffset = 0;
int uvOffset = 0;

StringBuilder builder = new StringBuilder();

builder.Append("# Exported with Tangram Unity\n");
builder.Append("# Visit https://github.com/tangrams/tangram-unity/ for more details\n\n");
builder.Append("mtllib " + filename + ".mtl\n");

foreach (var meshFilter in meshes)
{
Mesh mesh = meshFilter.sharedMesh;

Material[] materials = meshFilter.GetComponent<Renderer>().sharedMaterials;

builder.Append("g ").Append(meshFilter.name).Append("\n");

foreach (Vector3 lv in mesh.vertices)
{
Vector3 wv = meshFilter.transform.TransformPoint(lv);
builder.Append(string.Format("v {0} {1} {2}\n", -wv.x, wv.y, wv.z));
}

builder.Append("\n");

foreach (Vector3 ln in mesh.normals)
{
Vector3 wn = meshFilter.transform.TransformDirection(ln);
builder.Append(string.Format("vn {0} {1} {2}\n", -wn.x, wn.y, wn.z));
}

builder.Append("\n");

foreach (Vector2 uv in mesh.uv)
{
builder.Append(string.Format("vt {0} {1}\n", uv.x, uv.y));
}

for (int i = 0; i < mesh.subMeshCount; ++i)
{
var material = materials[i];

builder.Append("\n");
builder.Append("usemtl ").Append(material.name).Append("\n");
builder.Append("usemap ").Append(material.name).Append("\n");

int[] triangles = mesh.GetTriangles(i);
for (int j = 0; j < triangles.Length; j += 3)
{
if (mesh.uv.Length > 0)
{
builder.Append(string.Format("f {1}/{1}/{1} {0}/{0}/{0} {2}/{2}/{2}\n",
triangles[j + 0] + 1 + vertexOffset,
triangles[j + 1] + 1 + vertexOffset,
triangles[j + 2] + 1 + vertexOffset));
}
else
{
builder.Append(string.Format("f {1}//{1} {0}//{0} {2}//{2}\n",
triangles[j + 0] + 1 + vertexOffset,
triangles[j + 1] + 1 + vertexOffset,
triangles[j + 2] + 1 + vertexOffset));
}
}
}

vertexOffset += mesh.vertices.Length;
}

var materialAssetPerName = new Dictionary<string, MaterialDesc>();
foreach (var meshFilter in meshes)
{
Mesh mesh = meshFilter.sharedMesh;
Material[] materials = meshFilter.GetComponent<Renderer>().sharedMaterials;

for (int i = 0; i < mesh.subMeshCount; ++i)
{
var material = materials[i];
string mainTexture = null;
if (material.mainTexture != null)
{
mainTexture = AssetDatabase.GetAssetPath(material.mainTexture);
}
if (!materialAssetPerName.ContainsKey(material.name))
{
MaterialDesc materialDesc = new MaterialDesc();
materialDesc.mainTexture = mainTexture;
materialDesc.color = material.color;
materialAssetPerName.Add(material.name, materialDesc);
}
}
}

using (StreamWriter sw = new StreamWriter(filename + ".mtl"))
{
foreach (var materialAssetPair in materialAssetPerName)
{
MaterialDesc materialDesc = materialAssetPair.Value;

sw.Write("\n");
sw.Write("newmtl {0}\n", materialAssetPair.Key);
sw.Write("Ka 1.0 1.0 1.0\n");
sw.Write(string.Format("Kd {0} {1} {2}\n",
materialDesc.color.r,
materialDesc.color.g,
materialDesc.color.b));
sw.Write("Ks 0.0 0.0 0.0\n");
sw.Write("d 1.0\n");
sw.Write("Ns 0.0\n");
sw.Write("illum 2\n");

if (materialDesc.mainTexture != null)
{
string dest = materialDesc.mainTexture;
int stripIndex = dest.LastIndexOf("/");
if (stripIndex >= 0)
{
dest = dest.Substring(stripIndex + 1).Trim();
}
File.Copy(materialDesc.mainTexture, dest);
sw.Write("map_Kd {0}\n", dest);
}
}
}

using (StreamWriter sw = new StreamWriter(filename + ".obj"))
{
sw.Write(builder.ToString());
}

Debug.Log("Model exported as " + filename + ".obj");
}
}
12 changes: 12 additions & 0 deletions Assets/Editor/ModelExporter.cs.meta
View file
Open in desktop

Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.

12 changes: 9 additions & 3 deletions Assets/Mapzen/Unity/SceneGraph.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -17,11 +17,13 @@ public class SceneGraph
/// </summary>
/// <param name="group">The scene group to visit.</param>
/// <param name="parent">The parent transform of the generated game object for the current scene group.</param>
public static void Generate(SceneGroup group, Transform parent, GameObjectOptions options)
public static List<MeshFilter> Generate(SceneGroup group, Transform parent, GameObjectOptions options)
{
List<MeshFilter> meshFilters = new List<MeshFilter>();

if (group.meshData.Meshes.Count == 0 && group.childs.Count == 0)
{
return;
return meshFilters;
}

if (group.childs.Count > 0)
Expand All @@ -36,7 +38,7 @@ public static void Generate(SceneGroup group, Transform parent, GameObjectOption

foreach (var child in group.childs)
{
Generate(child.Value, gameObject.transform, options);
meshFilters.AddRange(Generate(child.Value, gameObject.transform, options));
}
}
else
Expand Down Expand Up @@ -107,8 +109,12 @@ public static void Generate(SceneGroup group, Transform parent, GameObjectOption
meshColliderComponent.material = options.PhysicMaterial;
meshColliderComponent.sharedMesh = mesh;
}

meshFilters.Add(meshFilterComponent);
}
}

return meshFilters;
}
}
}
12 changes: 4 additions & 8 deletions Assets/MapzenMap.cs
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,12 +1,8 @@
using System.Collections;
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using UnityEngine;
using UnityEngine.Networking;
using Mapzen.VectorData;
using Mapzen.Unity;
using Mapzen.VectorData.Filters;
using Mapzen;

public class MapzenMap : MonoBehaviour
Expand All @@ -24,7 +20,7 @@ public class MapzenMap : MonoBehaviour

public string RegionName = "";

private List<GameObject> tiles = new List<GameObject>();
private List<MeshFilter> meshFilters = new List<MeshFilter>();

private IO tileIO = new IO();

Expand Down Expand Up @@ -123,13 +119,13 @@ void OnTaskReady(TileTask readyTask)
{
tasks.Clear();

SceneGraph.Generate(regionMap, null, gameObjectOptions);
meshFilters = SceneGraph.Generate(regionMap, null, gameObjectOptions);
}
}

public List<GameObject> Tiles
public List<MeshFilter> MeshFilters
{
get { return tiles; }
get { return meshFilters; }
}

public List<FeatureStyle> FeatureStyling
Expand Down