Basic help writing a simple blender exporter.

Coding Python Support
1

I’m trying to write a simple exporter to blender in python for my on format, however I’m having trouble just printing to a file. Here’s the code:


import bpy
class BXMLExporter(bpy.types.Operator):
    bl_idname = "bxml_exporter"
    bl_label = "BXML Exporter"
    
    def execute(self, context):
        file = open("//Users//Julian//Documents//Jobb//Programmering//Raytracing//Bulletracer//test.txt", "w")
        #file = open("C:\\Users\\Julian\\Desktop\	est.txt", "w")
        file.write("<scene>
")

        #########################################################
        ################# SAVE MESHES ###########################
        #########################################################
        for obj in bpy.data.meshes:
            file.write("	<Object name=\"" + str(obj.name) + "\" materialName=\"" + str(obj.materials[0].name) + "\">
")
            
            vertData = obj.verts
            for face in obj.faces:
                file.write("		<Face>
")
               
                vertices = face.verts
                if len(vertices) == 4: #quad
                    file.write("			<Vertex>" + str(vertData[vertices[0]].co[0]) + ";" + str(vertData[vertices[0]].co[1]) + ";" + str(vertData[vertices[0]].co[2]) + "</Vertex>
")
                    file.write("			<Vertex>" + str(vertData[vertices[1]].co[0]) + ";" + str(vertData[vertices[1]].co[1]) + ";" + str(vertData[vertices[1]].co[2]) + "</Vertex>
")
                    file.write("			<Vertex>" + str(vertData[vertices[2]].co[0]) + ";" + str(vertData[vertices[2]].co[1]) + ";" + str(vertData[vertices[2]].co[2]) + "</Vertex>
")
                    file.write("		</Face>
")
                   
                    file.write("		<Face>
")
                    file.write("			<Vertex>" + str(vertData[vertices[0]].co[0]) + ";" + str(vertData[vertices[0]].co[1]) + ";" + str(vertData[vertices[0]].co[2]) + "</Vertex>
")
                    file.write("			<Vertex>" + str(vertData[vertices[3]].co[0]) + ";" + str(vertData[vertices[3]].co[1]) + ";" + str(vertData[vertices[3]].co[2]) + "</Vertex>
")
                    file.write("			<Vertex>" + str(vertData[vertices[2]].co[0]) + ";" + str(vertData[vertices[2]].co[1]) + ";" + str(vertData[vertices[2]].co[2]) + "</Vertex>
")
                    file.write("		</Face>
")
                else:
                    file.write("			<Vertex>" + str(vertData[vertices[0]].co[0]) + ";" + str(vertData[vertices[0]].co[1]) + ";" + str(vertData[vertices[0]].co[2]) + "</Vertex>
")
                    file.write("			<Vertex>" + str(vertData[vertices[1]].co[0]) + ";" + str(vertData[vertices[1]].co[1]) + ";" + str(vertData[vertices[1]].co[2]) + "</Vertex>
")
                    file.write("			<Vertex>" + str(vertData[vertices[2]].co[0]) + ";" + str(vertData[vertices[2]].co[1]) + ";" + str(vertData[vertices[2]].co[2]) + "</Vertex>
")
                    file.write("		</Face>
")
                    
            file.write("	</Object>
")
            #self.report({'INFO'}, str(obj.name))
            
        ##########################################################
        #################### SAVE LAMPS ##########################
        ##########################################################
        file.write("abc")
        for obj in bpy.data.objects:
            if obj.Type == 'LAMP':
                lamp = obj.data
                file.write("	<Lamp name=\"" + str(lamp.name) + "\" intensity=\"" + str(lamp.energy) + "\" falloff=\"" + str(lamp.distance) + "\">
")
                file.write("		<Color>" + str(lamp.color[0]) + ";" + str(lamp.color[1]) + ";" + str(lamp.color[2]) + "</Color>
")
                file.write("		<Pos>" + str(obj.location[0]) + ";" + str(obj.location[1]) + ";" + str(obj.location[2]) + "</Pos>
")
                file.write("	</Lamp>
")
        file.write("</scene>
")
        file.close()
        self.report({'INFO'}, "Saved data to BXML-file..")
        return {'FINISHED'}
        
bpy.types.register(BXMLExporter)

Everything to the “SAVE LAMPS”-sections works fine but the code after that doesn’t print anything at all to the file.

Thanks!

2

obj.Type should be obj.type.

3

sigh Thanks! I’m new to python and thought errors like these would get caught in the interpretor.