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Add simple example of how to use the library.
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| using System; | ||
| using System.Drawing; | ||
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| namespace TessExample | ||
| { | ||
| class Program | ||
| { | ||
| // The data array contains 4 values, it's the associated data of the vertices that resulted in an intersection. | ||
| private static object VertexCombine(LibTessDotNet.Vec3 position, object[] data, float[] weights) | ||
| { | ||
| // Fetch the vertex data. | ||
| var colors = new Color[] { (Color)data[0], (Color)data[1], (Color)data[2], (Color)data[3] }; | ||
| // Interpolate with the 4 weights. | ||
| var rgba = new float[] { | ||
| colors[0].R * weights[0] + colors[1].R * weights[1] + colors[2].R * weights[2] + colors[3].R * weights[3], | ||
| colors[0].G * weights[0] + colors[1].G * weights[1] + colors[2].G * weights[2] + colors[3].G * weights[3], | ||
| colors[0].B * weights[0] + colors[1].B * weights[1] + colors[2].B * weights[2] + colors[3].B * weights[3], | ||
| colors[0].A * weights[0] + colors[1].A * weights[1] + colors[2].A * weights[2] + colors[3].A * weights[3] | ||
| }; | ||
| // Return interpolated data for the new vertex. | ||
| return Color.FromArgb((int)rgba[3], (int)rgba[0], (int)rgba[1], (int)rgba[2]); | ||
| } | ||
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| static void Main(string[] args) | ||
| { | ||
| // Example input data in the form of a star that intersects itself. | ||
| var inputData = new float[] { 0.0f, 3.0f, -1.0f, 0.0f, 1.6f, 1.9f, -1.6f, 1.9f, 1.0f, 0.0f }; | ||
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| // Create an instance of the tessellator. Can be reused. | ||
| var tess = new LibTessDotNet.Tess(); | ||
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| // Construct the contour from inputData. | ||
| // A polygon can be composed of multiple contours which are all tessellated at the same time. | ||
| int numPoints = inputData.Length / 2; | ||
| var contour = new LibTessDotNet.ContourVertex[numPoints]; | ||
| for (int i = 0; i < numPoints; i++) | ||
| { | ||
| // NOTE : Z is here for convenience if you want to keep a 3D vertex position throughout the tessellation process but only X and Y are important. | ||
| contour[i].Position = new LibTessDotNet.Vec3 { X = inputData[i * 2], Y = inputData[i * 2 + 1], Z = 0.0f }; | ||
| // Data can contain any per-vertex data, here a constant color. | ||
| contour[i].Data = Color.Azure; | ||
| } | ||
| // Add the contour with a specific orientation, use "Original" if you want to keep the input orientation. | ||
| tess.AddContour(contour, LibTessDotNet.ContourOrientation.Clockwise); | ||
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| // Tessellate! | ||
| // The winding rule determines how the different contours are combined together. | ||
| // See http://www.glprogramming.com/red/chapter11.html (section "Winding Numbers and Winding Rules") for more information. | ||
| // If you want triangles as output, you need to use "Polygons" type as output and 3 vertices per polygon. | ||
| tess.Tessellate(LibTessDotNet.WindingRule.EvenOdd, LibTessDotNet.ElementType.Polygons, 3, VertexCombine); | ||
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| // Same call but the last callback is optional. Data will be null because no interpolated data would have been generated. | ||
| //tess.Tessellate(LibTessDotNet.WindingRule.EvenOdd, LibTessDotNet.ElementType.Polygons, 3); // Some vertices will have null Data in this case. | ||
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| Console.WriteLine("Output triangles:"); | ||
| int numTriangles = tess.ElementCount; | ||
| for (int i = 0; i < numTriangles; i++) | ||
| { | ||
| var v0 = tess.Vertices[tess.Elements[i * 3]].Position; | ||
| var v1 = tess.Vertices[tess.Elements[i * 3 + 1]].Position; | ||
| var v2 = tess.Vertices[tess.Elements[i * 3 + 2]].Position; | ||
| Console.WriteLine("#{0} ({1:F1},{2:F1}) ({3:F1},{4:F1}) ({5:F1},{6:F1})", i, v0.X, v0.Y, v1.X, v1.Y, v2.X, v2.Y); | ||
| } | ||
| Console.ReadLine(); | ||
| } | ||
| } | ||
| } |
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| using System.Reflection; | ||
| using System.Runtime.CompilerServices; | ||
| using System.Runtime.InteropServices; | ||
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| // General Information about an assembly is controlled through the following | ||
| // set of attributes. Change these attribute values to modify the information | ||
| // associated with an assembly. | ||
| [assembly: AssemblyTitle("TessExample")] | ||
| [assembly: AssemblyDescription("")] | ||
| [assembly: AssemblyConfiguration("")] | ||
| [assembly: AssemblyCompany("")] | ||
| [assembly: AssemblyProduct("TessExample")] | ||
| [assembly: AssemblyCopyright("Copyright © 2014")] | ||
| [assembly: AssemblyTrademark("")] | ||
| [assembly: AssemblyCulture("")] | ||
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| // Setting ComVisible to false makes the types in this assembly not visible | ||
| // to COM components. If you need to access a type in this assembly from | ||
| // COM, set the ComVisible attribute to true on that type. | ||
| [assembly: ComVisible(false)] | ||
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| // The following GUID is for the ID of the typelib if this project is exposed to COM | ||
| [assembly: Guid("55f70c57-4ac9-4166-86b8-938b24f1e44e")] | ||
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| // Version information for an assembly consists of the following four values: | ||
| // | ||
| // Major Version | ||
| // Minor Version | ||
| // Build Number | ||
| // Revision | ||
| // | ||
| // You can specify all the values or you can default the Build and Revision Numbers | ||
| // by using the '*' as shown below: | ||
| // [assembly: AssemblyVersion("1.0.*")] | ||
| [assembly: AssemblyVersion("1.0.0.0")] | ||
| [assembly: AssemblyFileVersion("1.0.0.0")] |
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| <?xml version="1.0" encoding="utf-8"?> | ||
| <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> | ||
| <PropertyGroup> | ||
| <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration> | ||
| <Platform Condition=" '$(Platform)' == '' ">x86</Platform> | ||
| <ProductVersion>8.0.30703</ProductVersion> | ||
| <SchemaVersion>2.0</SchemaVersion> | ||
| <ProjectGuid>{BB1005DC-C911-4E65-B3B8-7316357FD254}</ProjectGuid> | ||
| <OutputType>Exe</OutputType> | ||
| <AppDesignerFolder>Properties</AppDesignerFolder> | ||
| <RootNamespace>TessExample</RootNamespace> | ||
| <AssemblyName>TessExample</AssemblyName> | ||
| <TargetFrameworkVersion>v4.0</TargetFrameworkVersion> | ||
| <TargetFrameworkProfile>Client</TargetFrameworkProfile> | ||
| <FileAlignment>512</FileAlignment> | ||
| </PropertyGroup> | ||
| <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' "> | ||
| <PlatformTarget>x86</PlatformTarget> | ||
| <DebugSymbols>true</DebugSymbols> | ||
| <DebugType>full</DebugType> | ||
| <Optimize>false</Optimize> | ||
| <OutputPath>..\Build\Debug\</OutputPath> | ||
| <DefineConstants>DEBUG;TRACE</DefineConstants> | ||
| <ErrorReport>prompt</ErrorReport> | ||
| <WarningLevel>4</WarningLevel> | ||
| </PropertyGroup> | ||
| <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' "> | ||
| <PlatformTarget>x86</PlatformTarget> | ||
| <DebugType>pdbonly</DebugType> | ||
| <Optimize>true</Optimize> | ||
| <OutputPath>..\Build\Release\</OutputPath> | ||
| <DefineConstants>TRACE</DefineConstants> | ||
| <ErrorReport>prompt</ErrorReport> | ||
| <WarningLevel>4</WarningLevel> | ||
| </PropertyGroup> | ||
| <ItemGroup> | ||
| <Reference Include="System" /> | ||
| <Reference Include="System.Core" /> | ||
| <Reference Include="System.Drawing" /> | ||
| </ItemGroup> | ||
| <ItemGroup> | ||
| <Compile Include="Program.cs" /> | ||
| <Compile Include="Properties\AssemblyInfo.cs" /> | ||
| </ItemGroup> | ||
| <ItemGroup> | ||
| <ProjectReference Include="..\LibTessDotNet\LibTessDotNet.csproj"> | ||
| <Project>{5EE39029-873A-45A0-9259-2198BF8729F4}</Project> | ||
| <Name>LibTessDotNet</Name> | ||
| </ProjectReference> | ||
| </ItemGroup> | ||
| <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" /> | ||
| <!-- To modify your build process, add your task inside one of the targets below and uncomment it. | ||
| Other similar extension points exist, see Microsoft.Common.targets. | ||
| <Target Name="BeforeBuild"> | ||
| </Target> | ||
| <Target Name="AfterBuild"> | ||
| </Target> | ||
| --> | ||
| </Project> |