Merge pull request #735 from BitOfGold/master

.OBJ export of Mesh

src/Tools/babylon.sceneSerializer.js

@@ -805,4 +805,89 @@ var BABYLON;
         return SceneSerializer;
     })();
     BABYLON.SceneSerializer = SceneSerializer;
+    var OBJExport = (function () {
+        function OBJExport() {
+        }
+        //Exports the geometry of a Mesh in .OBJ file format (text)
+        OBJExport.OBJ = function (mesh, materials, matlibname) {
+            var output = [];
+            var g = mesh.geometry;
+            var trunkVerts = g.getVerticesData('position');
+            var trunkNormals = g.getVerticesData('normal');
+            var trunkUV = g.getVerticesData('uv');
+            var trunkFaces = g.getIndices();
+            if (materials) {
+                if (!matlibname) {
+                    matlibname = 'mat';
+                }
+                output.push("mtllib " + matlibname + ".mtl");
+            }
+            for (var i = 0; i < trunkVerts.length; i += 3) {
+                output.push("v " + trunkVerts[i] + " " + trunkVerts[i + 1] + " " + trunkVerts[i + 2]);
+            }
+            for (i = 0; i < trunkNormals.length; i += 3) {
+                output.push("vn " + trunkNormals[i] + " " + trunkNormals[i + 1] + " " + trunkNormals[i + 2]);
+            }
+            for (i = 0; i < trunkUV.length; i += 2) {
+                output.push("vt " + trunkUV[i] + " " + trunkUV[i + 1]);
+            }
+            //TODO: submeshes (groups)
+            //TODO: smoothing groups (s 1, s off)
+            output.push("g gr1");
+            if (materials) {
+                output.push("usemtl mat1");
+            }
+            for (i = 0; i < trunkFaces.length; i += 3) {
+                output.push("f " + (trunkFaces[i + 2] + 1) + "/" + (trunkFaces[i + 2] + 1) + "/" + (trunkFaces[i + 2] + 1) +
+                    " " + (trunkFaces[i + 1] + 1) + "/" + (trunkFaces[i + 1] + 1) + "/" + (trunkFaces[i + 1] + 1) +
+                    " " + (trunkFaces[i] + 1) + "/" + (trunkFaces[i] + 1) + "/" + (trunkFaces[i] + 1));
+            }
+            var text = output.join("\n");
+            return (text);
+        };
+        //Exports the material(s) of a mesh in .MTL file format (text)
+        OBJExport.MTL = function (mesh) {
+            var output = [];
+            var m = mesh.material;
+            console.log(m);
+            output.push("newmtl mat1");
+            output.push("  Ns " + m.specularPower.toFixed(4));
+            output.push("  Ni 1.5000");
+            output.push("  d " + m.alpha.toFixed(4));
+            output.push("  Tr 0.0000");
+            output.push("  Tf 1.0000 1.0000 1.0000");
+            output.push("  illum 2");
+            output.push("  Ka " + m.ambientColor.r.toFixed(4) + " " + m.ambientColor.g.toFixed(4) + " " + m.ambientColor.b.toFixed(4));
+            output.push("  Kd " + m.diffuseColor.r.toFixed(4) + " " + m.diffuseColor.g.toFixed(4) + " " + m.diffuseColor.b.toFixed(4));
+            output.push("  Ks " + m.specularColor.r.toFixed(4) + " " + m.specularColor.g.toFixed(4) + " " + m.specularColor.b.toFixed(4));
+            output.push("  Ke " + m.emissiveColor.r.toFixed(4) + " " + m.emissiveColor.g.toFixed(4) + " " + m.emissiveColor.b.toFixed(4));
+            //TODO: uv scale, offset, wrap
+            //TODO: UV mirrored in Blender? second UV channel? lightMap? reflection textures?
+            var uvscale = "";
+            if (m.ambientTexture) {
+                output.push("  map_Ka " + uvscale + m.ambientTexture.name);
+            }
+            if (m.diffuseTexture) {
+                output.push("  map_Kd " + uvscale + m.diffuseTexture.name);
+            }
+            if (m.specularTexture) {
+                output.push("  map_Ks " + uvscale + m.specularTexture.name);
+            }
+            /* TODO: emissive texture not in .MAT format (???)
+            if (m.emissiveTexture) {
+                output.push("  map_d "+uvscale+m.emissiveTexture.name);
+            }
+            */
+            if (m.bumpTexture) {
+                output.push("  map_bump -imfchan z " + uvscale + m.bumpTexture.name);
+            }
+            if (m.opacityTexture) {
+                output.push("  map_d " + uvscale + m.opacityTexture.name);
+            }
+            var text = output.join("\n");
+            return (text);
+        };
+        return OBJExport;
+    })();
+    BABYLON.OBJExport = OBJExport;
 })(BABYLON || (BABYLON = {}));

src/Tools/babylon.sceneSerializer.ts

@@ -954,6 +954,109 @@
             return serializationObject;
         }
     }
+
+    export class OBJExport {
+
+        //Exports the geometry of a Mesh in .OBJ file format (text)
+        public static OBJ(mesh:Mesh, materials?:boolean, matlibname?:string):string {
+            var output = [];
+            var g = mesh.geometry;
+            var trunkVerts = g.getVerticesData('position');
+            var trunkNormals = g.getVerticesData('normal');
+            var trunkUV = g.getVerticesData('uv');
+            var trunkFaces = g.getIndices();
+            if (materials) {
+                if (!matlibname) {
+                    matlibname = 'mat';
+                }
+                output.push("mtllib "+matlibname+".mtl");
+            }
+            for (var i = 0; i < trunkVerts.length; i += 3) {
+                output.push("v " + trunkVerts[i] + " " + trunkVerts[i + 1] + " " + trunkVerts[i + 2]);
+            }
+            for (i = 0; i < trunkNormals.length; i += 3) {
+                output.push("vn " + trunkNormals[i] + " " + trunkNormals[i + 1] + " " + trunkNormals[i + 2]);
+            }
+            for (i = 0; i < trunkUV.length; i += 2) {
+                output.push("vt " + trunkUV[i] + " " + trunkUV[i + 1]);
+            }
+
+            //TODO: submeshes (groups)
+            //TODO: smoothing groups (s 1, s off)
+
+            output.push("g gr1");
+            if (materials) {
+                output.push("usemtl mat1");
+            }
+            for (i = 0; i < trunkFaces.length; i += 3) {
+                output.push(
+                    "f " + (trunkFaces[i + 2] + 1) + "/" + (trunkFaces[i + 2] + 1) + "/" + (trunkFaces[i + 2] + 1) +
+                    " " + (trunkFaces[i + 1] + 1) + "/" + (trunkFaces[i + 1] + 1) + "/" + (trunkFaces[i + 1] + 1) +
+                    " " + (trunkFaces[i] + 1) + "/" + (trunkFaces[i] + 1) + "/" + (trunkFaces[i] + 1)
+                );
+            }
+            var text = output.join("\n");
+            return (text);
+        }
+
+        //Exports the material(s) of a mesh in .MTL file format (text)
+        public static MTL(mesh:Mesh):string {
+            var output = [];
+            var m = <StandardMaterial>mesh.material;
+            output.push("newmtl mat1");
+            output.push("  Ns "+m.specularPower.toFixed(4));
+            output.push("  Ni 1.5000");
+            output.push("  d "+m.alpha.toFixed(4));
+            output.push("  Tr 0.0000");
+            output.push("  Tf 1.0000 1.0000 1.0000");
+            output.push("  illum 2");
+            output.push("  Ka "+m.ambientColor.r.toFixed(4)+" "+m.ambientColor.g.toFixed(4)+" "+m.ambientColor.b.toFixed(4));
+            output.push("  Kd "+m.diffuseColor.r.toFixed(4)+" "+m.diffuseColor.g.toFixed(4)+" "+m.diffuseColor.b.toFixed(4));
+            output.push("  Ks "+m.specularColor.r.toFixed(4)+" "+m.specularColor.g.toFixed(4)+" "+m.specularColor.b.toFixed(4));
+            output.push("  Ke "+m.emissiveColor.r.toFixed(4)+" "+m.emissiveColor.g.toFixed(4)+" "+m.emissiveColor.b.toFixed(4));
+
+            //TODO: uv scale, offset, wrap
+            //TODO: UV mirrored in Blender? second UV channel? lightMap? reflection textures?
+            var uvscale = "";
+
+            if (m.ambientTexture) {
+                output.push("  map_Ka "+uvscale+m.ambientTexture.name);
+            }
+
+            if (m.diffuseTexture) {
+                output.push("  map_Kd "+uvscale+m.diffuseTexture.name);
+                //TODO: alpha testing, opacity in diffuse texture alpha channel (diffuseTexture.hasAlpha -> map_d)
+            }
+
+            if (m.specularTexture) {
+                output.push("  map_Ks "+uvscale+m.specularTexture.name);
+                /* TODO: glossiness = specular highlight component is in alpha channel of specularTexture. (???)
+                if (m.useGlossinessFromSpecularMapAlpha)  {
+                    output.push("  map_Ns "+uvscale + m.specularTexture.name);
+                }
+                */
+            }
+
+            /* TODO: emissive texture not in .MAT format (???)
+            if (m.emissiveTexture) {
+                output.push("  map_d "+uvscale+m.emissiveTexture.name);
+            }
+            */
+
+            if (m.bumpTexture) {
+                output.push("  map_bump -imfchan z "+uvscale+m.bumpTexture.name);
+            }
+
+            if (m.opacityTexture) {
+                output.push("  map_d "+uvscale+m.opacityTexture.name);
+            }
+
+            var text = output.join("\n");
+            return(text);
+        }
+
+    }
+
 }
 
 

src/Tools/babylon.tools.js

@@ -277,6 +277,13 @@ var BABYLON;
                 reader.readAsArrayBuffer(fileToLoad);
             }
         };
+        //returns a downloadable url to a file content.
+        Tools.FileAsURL = function (content) {
+            var fileBlob = new Blob([content]);
+            var url = window.URL || window.webkitURL;
+            var link = url.createObjectURL(fileBlob);
+            return link;
+        };
         // Misc.   
         Tools.Clamp = function (value, min, max) {
             if (min === void 0) { min = 0; }

src/Tools/babylon.tools.ts

@@ -341,6 +341,14 @@
             }
         }
 
+        //returns a downloadable url to a file content.
+        public static FileAsURL(content:string): string {
+            var fileBlob = new Blob([content]);
+            var url = window.URL || window.webkitURL;
+            var link:string = url.createObjectURL(fileBlob);
+            return link;
+        }
+
         // Misc.   
         public static Clamp(value: number, min = 0, max = 1): number {
             return Math.min(max, Math.max(min, value));