- viewer frustrum culling, night mode switch and draw distance modifier keys

Author: SoapyMan

DriverLevelTool/model_compiler/compiler.cpp

@@ -2,7 +2,9 @@
 
 #include "obj_loader.h"
 #include "driver_routines/d2_types.h"
+
 #include <malloc.h>
+#include "math/TriangleUtil.inl"
 
 #include "driver_level.h"
 #include "core/VirtualStream.h"
@@ -399,10 +401,12 @@ void WritePolygonNormals(IVirtualStream* stream, MODEL* model, smdgroup_t* group
 		SVECTOR* v2 = model->pVertex(poly.vindices[1]);
 		SVECTOR* v3 = model->pVertex(poly.vindices[2]);
 
-		Vector3D normal = NormalOfTriangle(
-			{ (float)v1->x, (float)v1->y, (float)v1->z }, 
-			{ (float)v2->x, (float)v2->y, (float)v2->z }, 
-			{ (float)v3->x, (float)v3->y, (float)v3->z });
+		Vector3D normal;
+
+		ComputeTriangleNormal(normal,
+			Vector3D((float)v1->x, (float)v1->y, (float)v1->z), 
+			Vector3D((float)v2->x, (float)v2->y, (float)v2->z), 
+			Vector3D((float)v3->x, (float)v3->y, (float)v3->z));
 
 		// Invert normals (REQUIRED)
 		normal *= -1.0f;

DriverLevelTool/viewer/rendermodel.cpp

@@ -7,6 +7,27 @@
 #include "util/DkList.h"
 #include <assert.h>
 
+void AddExtentVertex(Vector3D& minPoint, Vector3D& maxPoint, const Vector3D& v)
+{
+	if (v.x < minPoint.x)
+		minPoint.x = v.x;
+
+	if (v.x > maxPoint.x)
+		maxPoint.x = v.x;
+
+	if (v.y < minPoint.y)
+		minPoint.y = v.y;
+
+	if (v.y > maxPoint.y)
+		maxPoint.y = v.y;
+
+	if (v.z < minPoint.z)
+		minPoint.z = v.z;
+
+	if (v.z > maxPoint.z)
+		maxPoint.z = v.z;
+}
+
 CRenderModel::CRenderModel()
 {
 }
@@ -23,6 +44,9 @@ bool CRenderModel::Initialize(ModelRef_t* model)
 
 	if (!model->model)
 		return false;
+
+	m_extMin = Vector3D(V_MAX_COORD);
+	m_extMax = Vector3D(-V_MAX_COORD);
 
 	m_sourceModel = model;
 	GenerateBuffers();
@@ -227,8 +251,11 @@ void CRenderModel::GenerateBuffers()
 
 				// get the vertex
 				SVECTOR* vert = vertex_ref->pVertex(dec_face.vindices[VERT_IDX]);
+				Vector3D fVert = Vector3D(vert->x * EXPORT_SCALING, vert->y * -EXPORT_SCALING, vert->z * EXPORT_SCALING);
 
-				(*(Vector3D*)&newVert.vx) = Vector3D(vert->x * EXPORT_SCALING, vert->y * -EXPORT_SCALING, vert->z * EXPORT_SCALING);
+				(*(Vector3D*)&newVert.vx) = fVert;
+
+				AddExtentVertex(m_extMin, m_extMax, fVert);
 
 				if (smooth)
 				{
@@ -342,4 +369,10 @@ void CRenderModel::Draw()
 		GR_SetTexture(GetHWTexture(batch.tpage, 0));
 		GR_DrawIndexed(PRIM_TRIANGLES, batch.startIndex, batch.numIndices);
 	}
+}
+
+void CRenderModel::GetExtents(Vector3D& outMin, Vector3D& outMax) const
+{
+	outMin = m_extMin;
+	outMax = m_extMax;
 }

DriverLevelTool/viewer/rendermodel.h

@@ -1,6 +1,7 @@
 #ifndef DRAWMODEL_H
 #define DRAWMODEL_H
 
+#include "math/Vector.h"
 #include "util/DkList.h"
 
 struct RegionModels_t;
@@ -25,13 +26,19 @@ class CRenderModel
 
 	void			Draw();
 
+	void			GetExtents(Vector3D& outMin, Vector3D& outMax) const;
+	
 protected:
 	void			GenerateBuffers();
-	
+
+	Vector3D				m_extMin;
+	Vector3D				m_extMax;
+
 	ModelRef_t*				m_sourceModel { nullptr };
 	GrVAO*					m_vao { nullptr };
 	DkList<modelBatch_t>	m_batches;
 	int						m_numVerts;
+	 
 };
 
 #endif