SHADE_Engine/src/Graphics/MiddleEnd/Interface/SHDebugDrawSystem.cpp

@@ -182,6 +182,11 @@ namespace SHADE
     DrawLineLoop({ p1, p2, p3, p4 }, color, depthTested);
   }
 
+  void SHDebugDrawSystem::DrawCircle(const SHMatrix& matrix, const SHColour& color /*= SHColour::WHITE*/, bool depthTested /*= false*/)
+  {
+    drawCircle(getMeshBatch(false, depthTested), matrix, color);
+  }
+
   void SHDebugDrawSystem::DrawWireCube(const SHMatrix& matrix, const SHColour& color, bool depthTested)
   {
     drawWireCube(getMeshBatch(false, depthTested), matrix, color);
@@ -229,6 +234,12 @@ namespace SHADE
     markPersistentDrawsDirty();
   }
 
+  void SHDebugDrawSystem::DrawPersistentCircle(const SHMatrix& matrix, const SHColour& color, bool depthTested)
+  {
+    drawCircle(getPersistentMeshBatch(false, depthTested), matrix, color);
+    markPersistentDrawsDirty();
+  }
+
   void SHDebugDrawSystem::DrawPersistentWireCube(const SHMatrix& matrix, const SHColour& color, bool depthTested)
   {
     drawWireCube(getPersistentMeshBatch(false, depthTested), matrix, color);
@@ -328,6 +339,15 @@ namespace SHADE
     );
   }
 
+  void SHDebugDrawSystem::drawCircle(MeshBatch& batch, const SHMatrix& transformMatrix, const SHColour& color)
+  {
+    drawMesh
+    (
+      gfxSystem->GetMeshPrimitive(PrimitiveType::LineCircle),
+      batch, transformMatrix, color
+    );
+  }
+
   /*-----------------------------------------------------------------------------------*/
   /* Helper Batch Functions - Lines                                                    */
   /*-----------------------------------------------------------------------------------*/

SHADE_Engine/src/Graphics/MiddleEnd/Interface/SHDebugDrawSystem.h

@@ -101,6 +101,7 @@ namespace SHADE
     void DrawLineLoop(IterType pointListBegin, IterType pointListEnd, const SHColour& color = SHColour::WHITE, bool depthTested = false);
     void DrawTri(const SHVec3& p1, const SHVec3& p2, const SHVec3& p3, const SHColour& color = SHColour::WHITE, bool depthTested = false);
     void DrawQuad(const SHVec3& p1, const SHVec3& p2, const SHVec3& p3, const SHVec3& p4, const SHColour& color = SHColour::WHITE, bool depthTested = false);
+    void DrawCircle(const SHMatrix& matrix, const SHColour& color = SHColour::WHITE, bool depthTested = false);
     void DrawWireCube(const SHMatrix& matrix, const SHColour& color = SHColour::WHITE, bool depthTested = false);
     void DrawWireSphere(const SHMatrix& matrix, const SHColour& color = SHColour::WHITE, bool depthTested = false);
     void DrawCube(const SHMatrix& matrix, const SHColour& color = SHColour::WHITE, bool depthTested = false);
@@ -115,6 +116,7 @@ namespace SHADE
     void DrawPersistentLineLoop(IterType pointListBegin, IterType pointListEnd, const SHColour& color = SHColour::WHITE, bool depthTested = false);
     void DrawPersistentTri(const SHVec3& p1, const SHVec3& p2, const SHVec3& p3, const SHColour& color = SHColour::WHITE, bool depthTested = false);
     void DrawPersistentQuad(const SHVec3& p1, const SHVec3& p2, const SHVec3& p3, const SHVec3& p4, const SHColour& color = SHColour::WHITE, bool depthTested = false);
+    void DrawPersistentCircle(const SHMatrix& matrix, const SHColour& color = SHColour::WHITE, bool depthTested = false);
     void DrawPersistentWireCube(const SHMatrix& matrix, const SHColour& color = SHColour::WHITE, bool depthTested = false);
     void DrawPersistentWireSphere(const SHMatrix& matrix, const SHColour& color = SHColour::WHITE, bool depthTested = false);
     void DrawPersistentCube(const SHMatrix& matrix, const SHColour& color = SHColour::WHITE, bool depthTested = false);
@@ -216,6 +218,7 @@ namespace SHADE
     void drawWireSphere(MeshBatch& batch, const SHMatrix& transformMatrix, const SHColour& color);
     void drawCube(MeshBatch& batch, const SHMatrix& transformMatrix, const SHColour& color);
     void drawSphere(MeshBatch& batch, const SHMatrix& transformMatrix, const SHColour& color);
+    void drawCircle(MeshBatch& batch, const SHMatrix& transformMatrix, const SHColour& color);
 
     /*---------------------------------------------------------------------------------*/
     /* Helper Batch Functions - Lines                                                  */

SHADE_Engine/src/Graphics/MiddleEnd/Interface/SHGraphicsSystem.cpp

@@ -413,8 +413,9 @@ namespace SHADE
 
     // Create default meshes
     primitiveMeshes[static_cast<int>(PrimitiveType::Cube)]   = SHPrimitiveGenerator::Cube(meshLibrary);
-    primitiveMeshes[static_cast<int>(PrimitiveType::LineCube)] = SHPrimitiveGenerator::LineCube(meshLibrary);
     primitiveMeshes[static_cast<int>(PrimitiveType::Sphere)] = SHPrimitiveGenerator::Sphere(meshLibrary);
+    primitiveMeshes[static_cast<int>(PrimitiveType::LineCube)] = SHPrimitiveGenerator::LineCube(meshLibrary);
+    primitiveMeshes[static_cast<int>(PrimitiveType::LineCircle)] = SHPrimitiveGenerator::LineCircle(meshLibrary);
     BuildMeshBuffers();
 
     // Create default materials
@@ -840,6 +841,7 @@ namespace SHADE
       case PrimitiveType::Cube:
       case PrimitiveType::Sphere:
       case PrimitiveType::LineCube:
+      case PrimitiveType::LineCircle:
         return primitiveMeshes[static_cast<int>(type)];
       default:
         return {};

SHADE_Engine/src/Graphics/MiddleEnd/Interface/SHGraphicsSystem.h

@@ -71,9 +71,10 @@ namespace SHADE
   {
     Cube,
     Sphere,
-    LineCube
+    LineCube,
+    LineCircle
   };
-  static constexpr int MAX_PRIMITIVE_TYPES = 3;
+  static constexpr int MAX_PRIMITIVE_TYPES = 4;
   enum class DebugDrawPipelineType
   {
     LineNoDepthTest,

SHADE_Engine/src/Graphics/MiddleEnd/Meshes/SHPrimitiveGenerator.cpp

@@ -10,9 +10,13 @@ Copyright (C) 2022 DigiPen Institute of Technology.
 Reproduction or disclosure of this file or its contents without the prior written consent
 of DigiPen Institute of Technology is prohibited.
 *//*************************************************************************************/
+// Precompiled Header
 #include "SHpch.h"
+// Primary Includes
 #include "SHPrimitiveGenerator.h"
-
+// STL Includes
+#include <numbers>
+// Project Includes
 #include "Graphics/MiddleEnd/Interface/SHGraphicsSystem.h"
 #include "Graphics/MiddleEnd/Interface/SHMeshLibrary.h"
 
@@ -24,6 +28,7 @@ namespace SHADE
   SHMeshData SHPrimitiveGenerator::cubeMesh;
   SHMeshData SHPrimitiveGenerator::sphereMesh;
   SHMeshData SHPrimitiveGenerator::lineCubeMesh;
+  SHMeshData SHPrimitiveGenerator::lineCircleMesh;
 
   /*-----------------------------------------------------------------------------------*/
   /* Primitive Generation Functions                                                    */
@@ -341,6 +346,52 @@ namespace SHADE
     return addMeshDataTo(lineCubeMesh, gfxSystem);
   }
 
+  SHMeshData SHPrimitiveGenerator::LineCircle() noexcept
+  {
+    SHMeshData mesh;
+
+    // Generate points of the circle
+    static constexpr int SPLITS = 36;
+    static constexpr float ANGLE_INCREMENTS = (std::numbers::pi_v<float> * 2.0f) / static_cast<float>(SPLITS);
+    for (int i = 0; i < SPLITS; ++i)
+    {
+      const float ANGLE = ANGLE_INCREMENTS * i;
+      mesh.VertexPositions.emplace_back(cos(ANGLE) * 0.5f, sin(ANGLE) * 0.5f, 0.0f);
+    }
+
+    // Generate lines of the circle
+    for (int i = 1; i < SPLITS; ++i)
+    {
+      mesh.Indices.emplace_back(static_cast<uint32_t>(i - 1));
+      mesh.Indices.emplace_back(static_cast<uint32_t>(i));
+    }
+    // Last line to complete the circle
+    mesh.Indices.emplace_back(static_cast<uint32_t>(SPLITS - 1));
+    mesh.Indices.emplace_back(static_cast<uint32_t>(0));
+
+    mesh.VertexNormals.resize(mesh.VertexPositions.size());
+    mesh.VertexTangents.resize(mesh.VertexPositions.size());
+    mesh.VertexTexCoords.resize(mesh.VertexPositions.size());
+
+    return mesh;
+  }
+  
+  Handle<SHMesh> SHPrimitiveGenerator::LineCircle(SHMeshLibrary& meshLibrary) noexcept
+  {
+    if (lineCircleMesh.VertexPositions.empty())
+      lineCircleMesh = LineCircle();
+
+    return addMeshDataTo(lineCircleMesh, meshLibrary);
+  }
+
+  Handle<SHMesh> SHPrimitiveGenerator::LineCircle(SHGraphicsSystem& gfxSystem) noexcept
+  {
+    if (lineCircleMesh.VertexPositions.empty())
+      lineCircleMesh = LineCircle();
+
+    return addMeshDataTo(lineCircleMesh, gfxSystem);
+  }
+
   /*-----------------------------------------------------------------------------------*/
   /* Helper Functions                                                                  */
   /*-----------------------------------------------------------------------------------*/

SHADE_Engine/src/Graphics/MiddleEnd/Meshes/SHPrimitiveGenerator.h

@@ -154,6 +154,46 @@ namespace SHADE
     */
     /***********************************************************************************/
     [[nodiscard]] static Handle<SHMesh> LineCube(SHGraphicsSystem& gfxSystem) noexcept;
+    /***********************************************************************************/
+    /*!
+      \brief
+        Produces a circle that is comprised only of lines with no diagonal lines and 
+        store the data in a SHMeshData object.
+
+      \return
+        SHMeshData object containing vertex data for the line circle.
+    */
+    /***********************************************************************************/
+    [[nodiscard]] static SHMeshData LineCircle() noexcept;
+    /***********************************************************************************/
+    /*!
+      \brief
+        Produces a line circle and constructs a SHMesh using the SHGraphicsSystem 
+        provided.
+
+      \param meshLibrary
+        Reference to the SHMeshLibrary to produce and store a line circle mesh in.
+
+      \return
+        SHMesh object that points to the generated line circle mesh in the SHMeshLibrary.
+    */
+    /***********************************************************************************/
+    [[nodiscard]] static Handle<SHMesh> LineCircle(SHMeshLibrary& meshLibrary) noexcept;
+    /***********************************************************************************/
+    /*!
+      \brief
+        Produces a line circle and constructs a SHMesh using the SHGraphicsSystem 
+        provided.
+
+      \param gfxSystem
+        Reference to the SHGraphicsSystem to produce and store a line circle mesh in. 
+
+      \return
+        SHMesh object that points to the generated line circle mesh in the 
+        SHGraphicsSystem.
+    */
+    /***********************************************************************************/
+    [[nodiscard]] static Handle<SHMesh> LineCircle(SHGraphicsSystem& gfxSystem) noexcept;
 
   private:
     /*---------------------------------------------------------------------------------*/
@@ -168,5 +208,6 @@ namespace SHADE
     static SHMeshData cubeMesh;
     static SHMeshData sphereMesh;
     static SHMeshData lineCubeMesh;
+    static SHMeshData lineCircleMesh;
   };
 }

SHADE_Engine/src/Tools/SHDebugDraw.cpp

@@ -57,6 +57,11 @@ namespace SHADE
     dbgDrawSys->DrawQuad(pt1, pt2, pt3, pt4, color);
   }
 
+  void SHDebugDraw::Circle(const SHMatrix& mat, const SHVec4& color)
+  {
+    dbgDrawSys->DrawCircle(mat, color);
+  }
+
   void SHDebugDraw::LineLoop(const SHVec4& color, std::initializer_list<SHVec3> pointList)
   {
     dbgDrawSys->DrawLineLoop(pointList, color);
@@ -110,6 +115,11 @@ namespace SHADE
     dbgDrawSys->DrawPersistentQuad(pt1, pt2, pt3, pt4, color);
   }
 
+  void SHDebugDraw::PersistentCircle(const SHMatrix& mat, const SHVec4& color)
+  {
+    dbgDrawSys->DrawPersistentCircle(mat, color);
+  }
+
   void SHDebugDraw::PersistentLineLoop(const SHVec4& color, std::initializer_list<SHVec3> pointList)
   {
     dbgDrawSys->DrawPersistentLineLoop(pointList, color);

SHADE_Engine/src/Tools/SHDebugDraw.h

@@ -72,6 +72,7 @@ namespace SHADE
     /// <param name="pt3">Third point of the quadrilateral.</param>
     /// <param name="pt4">Third point of the quadrilateral.</param>
     static void Quad(const SHVec4& color, const SHVec3& pt1, const SHVec3& pt2, const SHVec3& pt3, const SHVec3& pt4);
+    static void Circle(const SHMatrix& mat,const SHVec4& color);
     /// <summary>
     /// Renders a polygon indicated by the specified set of points in world space.
     /// </summary>
@@ -115,6 +116,7 @@ namespace SHADE
     /// <param name="pt3">Third point of the quadrilateral.</param>
     /// <param name="pt4">Third point of the quadrilateral.</param>
     static void PersistentQuad(const SHVec4& color, const SHVec3& pt1, const SHVec3& pt2, const SHVec3& pt3, const SHVec3& pt4);
+    static void PersistentCircle(const SHMatrix& mat,const SHVec4& color);
     /// <summary>
     /// Renders a polygon indicated by the specified set of points in world space that 
     /// will persist until ClearPersistentDraws() is called.