WhipExamples/Layer.cpp

00001 //
00002 //  Copyright (c) 2006 by Autodesk, Inc.
00003 //
00004 //  By using this code, you are agreeing to the terms and conditions of
00005 //  the License Agreement included in the documentation for this code.
00006 //
00007 //  AUTODESK MAKES NO WARRANTIES, EXPRESS OR IMPLIED,
00008 //  AS TO THE CORRECTNESS OF THIS CODE OR ANY DERIVATIVE
00009 //  WORKS WHICH INCORPORATE IT.
00010 //
00011 //  AUTODESK PROVIDES THE CODE ON AN "AS-IS" BASIS
00012 //  AND EXPLICITLY DISCLAIMS ANY LIABILITY, INCLUDING
00013 //  CONSEQUENTIAL AND INCIDENTAL DAMAGES FOR ERRORS,
00014 //  OMISSIONS, AND OTHER PROBLEMS IN THE CODE.
00015 //
00016 //  Use, duplication, or disclosure by the U.S. Government is subject to
00017 //  restrictions set forth in FAR 52.227-19 (Commercial Computer Software
00018 //  Restricted Rights) and DFAR 252.227-7013(c)(1)(ii) (Rights in Technical
00019 //  Data and Computer Software), as applicable.
00020 //
00021 
00022 #include "whiptk/whip_toolkit.h"
00023 #include "whiptk/w2d_class_factory.h"
00024 
00025 extern WT_File *whip_file; //Assume this has been opened for writing elsewhere.
00026 
00027 WT_Result Layer()
00028 {
00029     WT_W2D_Class_Factory cf;
00030 
00031     //Store the current layer.
00032     WT_Layer *current_layer = cf.Create_Layer( whip_file->desired_rendition().layer() );
00033     if (current_layer == NULL)
00034         return WT_Result::Out_Of_Memory_Error;
00035         
00036     //Define some polylines.
00037     int x=0,y=0;
00038     WT_Logical_Point vP[4];
00039     vP[0] = WT_Logical_Point(x,y);
00040     vP[1] = WT_Logical_Point(x+50,y);
00041     vP[2] = WT_Logical_Point(x,y+100);
00042     vP[3] = WT_Logical_Point(x+50,y+100);
00043     //Create the polylines.
00044     WT_Polyline *p1 = cf.Create_Polyline(2, vP, WD_True);
00045     if (p1 == NULL)
00046         return WT_Result::Out_Of_Memory_Error;
00047     WT_Polyline *p2 = cf.Create_Polyline(2, &vP[2], WD_True);
00048     if (p2 == NULL)
00049         return WT_Result::Out_Of_Memory_Error;
00050     //Serialize them, associated with different layers.
00051     WT_Layer *layer1 = cf.Create_Layer(*whip_file, 1, "Layer 1");
00052     if (layer1 == NULL)
00053         return WT_Result::Out_Of_Memory_Error;
00054     whip_file->desired_rendition().layer() = *layer1;
00055     WD_CHECK(p1->serialize (*whip_file));
00056     WT_Layer *layer2 = cf.Create_Layer(*whip_file, 2, "Layer 2");
00057     whip_file->desired_rendition().layer() = *layer2;
00058     WD_CHECK(p2->serialize (*whip_file));
00059     //Restore the saved layer.
00060     whip_file->desired_rendition().layer() = *current_layer;
00061     
00062     cf.Destroy(layer1);
00063     cf.Destroy(layer2);
00064     cf.Destroy(p1);
00065     cf.Destroy(p2);
00066     cf.Destroy(current_layer);
00067 
00068     return WT_Result::Success;
00069 }

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