From 3c487c5cd69c53d6fea948643c0a76df03516605 Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Fri, 1 Apr 2022 21:23:39 +0200
Subject: Moved Stars45 to StarsEx

---
 Stars45/Shadow.cpp | 174 -----------------------------------------------------
 1 file changed, 174 deletions(-)
 delete mode 100644 Stars45/Shadow.cpp

(limited to 'Stars45/Shadow.cpp')

diff --git a/Stars45/Shadow.cpp b/Stars45/Shadow.cpp
deleted file mode 100644
index f64c033..0000000
--- a/Stars45/Shadow.cpp
+++ /dev/null
@@ -1,174 +0,0 @@
-/*  Starshatter: The Open Source Project
-    Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
-    Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
-    Copyright (c) 1997-2006, Destroyer Studios LLC.
-
-    AUTHOR:       John DiCamillo
-
-
-    OVERVIEW
-    ========
-    Dynamic Stencil Shadow Volumes
-*/
-
-#include "Shadow.h"
-#include "Light.h"
-#include "Solid.h"
-#include "Scene.h"
-#include "Video.h"
-
-static bool visible_shadow_volumes = false;
-
-// +--------------------------------------------------------------------+
-
-Shadow::Shadow(Solid* s)
-    : verts(0), nverts(0), max_verts(0), edges(0), num_edges(0), enabled(true)
-{
-    solid = s;
-
-    if (solid && solid->GetModel()) {
-        Model*   model       = solid->GetModel();
-        int      npolys      = model->NumPolys();
-
-        max_verts = model->NumVerts() * 4;
-        verts     = new Vec3[max_verts];
-        edges     = new WORD[npolys * 6];
-    }
-}
-
-// +--------------------------------------------------------------------+
-
-Shadow::~Shadow()
-{
-    if (verts)  delete [] verts;
-    if (edges)  delete [] edges;
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Shadow::Reset()
-{
-    num_edges   = 0;
-    nverts      = 0;
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Shadow::Render(Video* video)
-{
-    if (enabled)
-    video->DrawShadow(solid, nverts, verts, visible_shadow_volumes);
-}
-
-// +--------------------------------------------------------------------+
-
-void
-Shadow::Update(Light* light)
-{
-    Reset();
-
-    if (!light || !solid || !solid->GetModel() || !edges) return;
-
-    Vec3     lpos        = light->Location();
-    bool     directional = light->Type() == Light::LIGHT_DIRECTIONAL;
-    Model*   model       = solid->GetModel();
-
-    ListIter<Surface> iter = model->GetSurfaces();
-    while (++iter) {
-        Surface* s = iter.value();
-
-        // transform light location into surface object space
-        Matrix xform(solid->Orientation()); // XXX should be: (s->GetOrientation());
-
-        Vec3 tmp = light->Location();
-
-        if (!directional)
-        tmp -= (solid->Location() + s->GetOffset());
-
-        lpos.x = tmp * Vec3(xform(0,0), xform(0,1), xform(0,2));
-        lpos.y = tmp * Vec3(xform(1,0), xform(1,1), xform(1,2));
-        lpos.z = tmp * Vec3(xform(2,0), xform(2,1), xform(2,2));
-
-        // compute the silohuette for the mesh with respect to the light:
-
-        for (int i = 0; i < s->NumPolys(); i++) {
-            Poly* p = s->GetPolys() + i;
-
-            // skip polys with non-shadowing materials:
-            if (p->material && !p->material->shadow)
-            continue;
-
-            // if this poly faces the light:
-            if (p->plane.normal * lpos > 0) {
-                for (int n = 0; n < p->nverts; n++) {
-                    if (n < p->nverts-1)
-                    AddEdge(p->vlocs[n], p->vlocs[n+1]);
-                    else
-                    AddEdge(p->vlocs[n], p->vlocs[0]);
-                }
-            }
-        }
-
-        // extrude the silohuette away from the light source
-        // to create the shadow volume:
-
-        Vec3 extent = lpos * -1;
-        extent.Normalize();
-        extent *= 50.0e3f; //solid->Radius() * 2.1f;
-
-        for (int i = 0; i < (int) num_edges; i++) {
-            if (nverts+6 <= max_verts) {
-                Vec3 v1 = s->GetVLoc()[edges[2*i+0]];
-                Vec3 v2 = s->GetVLoc()[edges[2*i+1]];
-                Vec3 v3 = v1 + extent;
-                Vec3 v4 = v2 + extent;
-
-                verts[nverts++] = v1;
-                verts[nverts++] = v2;
-                verts[nverts++] = v3;
-
-                verts[nverts++] = v2;
-                verts[nverts++] = v4;
-                verts[nverts++] = v3;
-            }
-        }
-    }
-}
-
-void
-Shadow::AddEdge(WORD v1, WORD v2)
-{
-    // Remove interior edges (which appear in the list twice)
-    for (DWORD i = 0; i < num_edges; i++) {
-        if ((edges[2*i+0] == v1 && edges[2*i+1] == v2) ||
-                (edges[2*i+0] == v2 && edges[2*i+1] == v1))
-        {
-            if (num_edges > 1) {
-                edges[2*i+0] = edges[2*(num_edges-1)+0];
-                edges[2*i+1] = edges[2*(num_edges-1)+1];
-            }
-
-            num_edges--;
-            return;
-        }
-    }
-
-    edges[2*num_edges+0] = v1;
-    edges[2*num_edges+1] = v2;
-
-    num_edges++;
-}
-
-bool
-Shadow::GetVisibleShadowVolumes()
-{
-    return visible_shadow_volumes;
-}
-
-void
-Shadow::SetVisibleShadowVolumes(bool vis)
-{
-    visible_shadow_volumes = vis;
-}
-- 
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