neocturne/neofx-zoom-plusplus
Archived
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

ShadowVolume: Well, it's a beginning...

Browse source
This commit is contained in:
Matthias Schiffer 2009-12-18 15:06:04 +01:00
parent 4e3efa239c
commit a540d6b167
5 changed files with 132 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
levels/level.xml
View file

@ -40,6 +40,22 @@
<vertex x="2.0" y="-2.0" z="2.0"/>
<texcoords s="0.0" t="1.0"/>
</triangle>
<triangle texture="t0">
<vertex x="2.0" y="-2.0" z="-2.0"/>
<texcoords s="1.0" t="1.0"/>
<vertex x="2.0" y="2.0" z="-2.0"/>
<texcoords s="1.0" t="0.0"/>
<vertex x="6.0" y="2.0" z="-2.0"/>
<texcoords s="0.0" t="0.0"/>
</triangle>
<triangle texture="t0">
<vertex x="2.0" y="-2.0" z="-2.0"/>
<texcoords s="1.0" t="1.0"/>
<vertex x="6.0" y="2.0" z="-2.0"/>
<texcoords s="0.0" t="0.0"/>
<vertex x="6.0" y="-2.0" z="-2.0"/>
<texcoords s="0.0" t="1.0"/>
</triangle>
<triangle texture="t1">
<vertex x="-2.0" y="2.0" z="-6.0"/>
<texcoords s="0.0" t="1.0"/>

1
src/CMakeLists.txt
View file

@ -7,6 +7,7 @@ add_executable(zoom
MathUtil.cpp MathUtil.h
Renderer.cpp Renderer.h
Shader.cpp Shader.h
ShadowVolume.cpp ShadowVolume.h
Texture.cpp Texture.h
Triangle.h
zoom.cpp

31
src/Game.cpp
View file

@ -19,12 +19,13 @@
#include "Game.h"
#include "gl.h"
#include "BSPTree.h"
#include "Level.h"
#include "Shader.h"
#include "ShadowVolume.h"
#include "Triangle.h"
#include "gl.h"
#include <algorithm>
namespace Zoom {
@ -34,17 +35,16 @@ Game::Game(bool multisample) : playerPos(vmml::vec3f::ZERO), playerRotY(vmml::ma
glClearColor(0.0, 0.0, 0.0, 1.0);
glClearDepth(1.0);
glEnable(GL_DEPTH_TEST);
//glDepthFunc(GL_LEQUAL);
glEnable(GL_BLEND);
//glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
#ifndef _WIN32
if(multisample)
glEnable(GL_MULTISAMPLE_ARB);
#endif
glEnable(GL_LIGHTING);
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, vmml::vec4f(0.1, 0.1, 0.1, 1).array);
glLightfv(GL_LIGHT0, GL_AMBIENT, vmml::vec4f::ZERO.array);
glLightfv(GL_LIGHT0, GL_DIFFUSE, vmml::vec4f::ONE.array);
glLightfv(GL_LIGHT0, GL_SPECULAR, vmml::vec4f::ONE.array);
@ -142,17 +142,24 @@ void Game::render() {
renderer.render(triangles);
/*glBegin(GL_LINES);
Shader::disable();
glDepthFunc(GL_LEQUAL);
glBlendFunc(GL_ONE, GL_ZERO);
glColor3f(0, 0, 1);
glVertex4f(-1, -0.5, -2, 1);
glVertex4f(1, -0.5, -2, 1);
glBegin(GL_LINES);
glColor3f(1, 0, 0);
glVertex4f(0, -0.5, -2, 1);
glVertex4f(1, 0, 0, 0);
glColor3f(1, 1, 0);
glEnd();*/
for(std::vector<BSPTree::TriangleRecord>::iterator t = triangles.begin(); t != triangles.end(); ++t) {
ShadowVolume v(t->triangle, light);
for(int i = 0; i < 3; ++i) {
glVertex3fv(v.getVertex(i).array);
glVertex3fv((v.getVertex(i)+v.getDirection(i)).array);
}
}
glEnd();
}
}

45
src/ShadowVolume.cpp Normal file
View file

@ -0,0 +1,45 @@
/*
* ShadowVolume.cpp
*
* Copyright (C) 2009 Matthias Schiffer <matthias@gamezock.de>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ShadowVolume.h"
#include "MathUtil.h"
namespace Zoom {
ShadowVolume::ShadowVolume(const Triangle &t, const vmml::vec3f &lightPos) {
MathUtil::Plane trianglePlane(t);
for(int i = 0; i < 3; ++i) {
rays[i].p = t.getVertex(i);
}
if(trianglePlane.isBehind(lightPos)) {
for(int i = 0; i < 3; ++i) {
rays[i].dir = vmml::vec3f::ZERO;
}
return;
}
for(int i = 0; i < 3; ++i) {
rays[i].dir = rays[i].p - lightPos;
}
}
}

51
src/ShadowVolume.h Normal file
View file

@ -0,0 +1,51 @@
/*
* ShadowVolume.h
*
* Copyright (C) 2009 Matthias Schiffer <matthias@gamezock.de>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the
* Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef ZOOM_SHADOWVOLUME_H_
#define ZOOM_SHADOWVOLUME_H_
#include <vmmlib/vector.hpp>
namespace Zoom {
class Triangle;
class ShadowVolume {
public:
ShadowVolume(const Triangle &t, const vmml::vec3f &lightPos);
virtual ~ShadowVolume() {}
const vmml::vec3f& getVertex(int i) {
return rays[i].p;
}
const vmml::vec3f& getDirection(int i) {
return rays[i].dir;
}
private:
struct Ray {
vmml::vec3f p;
vmml::vec3f dir;
} rays[3];
};
}
#endif /* ZOOM_SHADOWVOLUME_H_ */