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-rw-r--r--nGenEx/Shadow.cpp224
1 files changed, 112 insertions, 112 deletions
diff --git a/nGenEx/Shadow.cpp b/nGenEx/Shadow.cpp
index 1e7eb96..34aa0d1 100644
--- a/nGenEx/Shadow.cpp
+++ b/nGenEx/Shadow.cpp
@@ -1,15 +1,15 @@
/* Project nGenEx
- Destroyer Studios LLC
- Copyright © 1997-2004. All Rights Reserved.
+ Destroyer Studios LLC
+ Copyright © 1997-2004. All Rights Reserved.
- SUBSYSTEM: nGenEx.lib
- FILE: Shadow.cpp
- AUTHOR: John DiCamillo
+ SUBSYSTEM: nGenEx.lib
+ FILE: Shadow.cpp
+ AUTHOR: John DiCamillo
- OVERVIEW
- ========
- Dynamic Stencil Shadow Volumes
+ OVERVIEW
+ ========
+ Dynamic Stencil Shadow Volumes
*/
#include "MemDebug.h"
@@ -24,26 +24,26 @@ static bool visible_shadow_volumes = false;
// +--------------------------------------------------------------------+
Shadow::Shadow(Solid* s)
- : verts(0), nverts(0), max_verts(0), edges(0), num_edges(0), enabled(true)
+: verts(0), nverts(0), max_verts(0), edges(0), num_edges(0), enabled(true)
{
- solid = s;
+ solid = s;
- if (solid && solid->GetModel()) {
- Model* model = solid->GetModel();
- int npolys = model->NumPolys();
+ if (solid && solid->GetModel()) {
+ Model* model = solid->GetModel();
+ int npolys = model->NumPolys();
- max_verts = model->NumVerts() * 4;
- verts = new(__FILE__,__LINE__) Vec3[max_verts];
- edges = new(__FILE__,__LINE__) WORD[npolys * 6];
- }
+ max_verts = model->NumVerts() * 4;
+ verts = new(__FILE__,__LINE__) Vec3[max_verts];
+ edges = new(__FILE__,__LINE__) WORD[npolys * 6];
+ }
}
// +--------------------------------------------------------------------+
Shadow::~Shadow()
{
- if (verts) delete [] verts;
- if (edges) delete [] edges;
+ if (verts) delete [] verts;
+ if (edges) delete [] edges;
}
// +--------------------------------------------------------------------+
@@ -51,8 +51,8 @@ Shadow::~Shadow()
void
Shadow::Reset()
{
- num_edges = 0;
- nverts = 0;
+ num_edges = 0;
+ nverts = 0;
}
// +--------------------------------------------------------------------+
@@ -60,8 +60,8 @@ Shadow::Reset()
void
Shadow::Render(Video* video)
{
- if (enabled)
- video->DrawShadow(solid, nverts, verts, visible_shadow_volumes);
+ if (enabled)
+ video->DrawShadow(solid, nverts, verts, visible_shadow_volumes);
}
// +--------------------------------------------------------------------+
@@ -69,108 +69,108 @@ Shadow::Render(Video* video)
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;
- }
- }
- }
+ 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++;
+ // 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;
+ return visible_shadow_volumes;
}
void
Shadow::SetVisibleShadowVolumes(bool vis)
{
- visible_shadow_volumes = vis;
+ visible_shadow_volumes = vis;
}
generated by cgit v1.1 at 2024-05-18 21:58:06 +0000