Initial commit of current work on Prime World Editor

2025-12-18 17:35:43 +00:00 · 2015-07-26 17:39:49 -04:00
commit 66e8c2ebcb
305 changed files with 33469 additions and 0 deletions
--- a/Resource/model/SSurface.cpp
+++ b/Resource/model/SSurface.cpp
@@ -0,0 +1,89 @@
+#include "SSurface.h"
+#include <Common/CRayCollisionTester.h>
+#include <Common/Math.h>
+#include <Core/CDrawUtil.h>
+
+std::pair<bool,float> SSurface::IntersectsRay(const CRay& Ray, const CTransform4f& Transform)
+{
+    //CDrawUtil::DrawWireCube(AABox.Transformed(Transform), CColor::skRed);
+    bool Hit = false;
+    float HitDist;
+
+    for (u32 iPrim = 0; iPrim < Primitives.size(); iPrim++)
+    {
+        SPrimitive *pPrim = &Primitives[iPrim];
+        u32 NumVerts = pPrim->Vertices.size();
+
+        if ((pPrim->Type == eGX_Triangles) || (pPrim->Type == eGX_TriangleFan) || (pPrim->Type == eGX_TriangleStrip))
+        {
+            u32 NumTris;
+
+            if (pPrim->Type == eGX_Triangles)
+                NumTris = NumVerts / 3;
+            else
+                NumTris = NumVerts - 2;
+
+            CColor LineColor;
+            if (pPrim->Type == eGX_Triangles)
+                LineColor = CColor::skRed;
+            else if (pPrim->Type == eGX_TriangleStrip)
+                LineColor = CColor::skYellow;
+            else if (pPrim->Type == eGX_TriangleFan)
+                LineColor = CColor::skGreen;
+
+            for (u32 iTri = 0; iTri < NumTris; iTri++)
+            {
+                CVector3f vtxA, vtxB, vtxC;
+
+                // Get the three vertices that make up the current tri
+                if (pPrim->Type == eGX_Triangles)
+                {
+                    u32 VertIndex = iTri * 3;
+                    vtxA = pPrim->Vertices[VertIndex].Position;
+                    vtxB = pPrim->Vertices[VertIndex+1].Position;
+                    vtxC = pPrim->Vertices[VertIndex+2].Position;
+                }
+
+                else if (pPrim->Type == eGX_TriangleFan)
+                {
+                    vtxA = pPrim->Vertices[0].Position;
+                    vtxB = pPrim->Vertices[iTri+1].Position;
+                    vtxC = pPrim->Vertices[iTri+2].Position;
+                }
+
+                else if (pPrim->Type = eGX_TriangleStrip)
+                {
+                    if (iTri & 0x1)
+                    {
+                        vtxA = pPrim->Vertices[iTri+2].Position;
+                        vtxB = pPrim->Vertices[iTri+1].Position;
+                        vtxC = pPrim->Vertices[iTri].Position;
+                    }
+
+                    else
+                    {
+                        vtxA = pPrim->Vertices[iTri].Position;
+                        vtxB = pPrim->Vertices[iTri+1].Position;
+                        vtxC = pPrim->Vertices[iTri+2].Position;
+                    }
+                }
+
+                // Intersection test
+                std::pair<bool,float> TriResult = Math::RayTriangleIntersection(Ray, vtxA, vtxB, vtxC);
+
+                if (TriResult.first)
+                {
+                    if ((!Hit) || (TriResult.second < HitDist))
+                    {
+                        Hit = true;
+                        HitDist = TriResult.second;
+                    }
+                }
+            }
+        }
+
+        // todo: Intersection tests for line primitives
+    }
+
+    return std::pair<bool,float>(Hit, HitDist);
+}