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/* bzflag
* Copyright (c) 1993-2025 Tim Riker
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the license found in the file
* named COPYING that should have accompanied this file.
*
* THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
/* SphereSceneNode:
* Encapsulates information for rendering a sphere.
*/
#ifndef BZF_SPHERE_SCENE_NODE_H
#define BZF_SPHERE_SCENE_NODE_H
// Inherits from
#include "SceneNode.h"
/******************************************************************************/
class SphereSceneNode : public SceneNode
{
public:
SphereSceneNode(const GLfloat pos[3], GLfloat radius);
virtual ~SphereSceneNode();
void setColor(GLfloat r, GLfloat g, GLfloat b, GLfloat a = 1.0f);
void setColor(const GLfloat* rgba);
void move(const GLfloat pos[3], GLfloat radius);
void notifyStyleChange();
virtual void setShockWave(bool)
{
return;
};
virtual SceneNode** getParts(int& numParts) = 0;
virtual void addRenderNodes(SceneRenderer&) = 0;
virtual void addShadowNodes(SceneRenderer&) = 0;
protected:
GLfloat radius;
GLfloat color[4];
bool transparent;
OpenGLGState gstate;
};
/******************************************************************************/
const int sphereLods = 5;
class SphereLodSceneNode : public SphereSceneNode
{
public:
SphereLodSceneNode(const GLfloat pos[3], GLfloat radius);
~SphereLodSceneNode();
void setShockWave(bool value);
// this node just won't split
SceneNode** getParts(int&)
{
return NULL;
}
void addRenderNodes(SceneRenderer&);
void addShadowNodes(SceneRenderer&);
static void init();
static void kill();
static void initContext(void*);
static void freeContext(void*);
protected:
class SphereLodRenderNode : public RenderNode
{
friend class SphereLodSceneNode;
public:
SphereLodRenderNode(const SphereLodSceneNode*);
~SphereLodRenderNode();
void setLod(int lod);
void render() override;
const GLfloat* getPosition() const override;
private:
const SphereLodSceneNode* sceneNode;
int lod;
};
private:
SphereLodRenderNode renderNode;
bool shockWave;
bool inside;
static bool initialized;
static GLuint lodLists[sphereLods];
static float lodPixelsSqr[sphereLods];
static int listTriangleCount[sphereLods];
friend class SphereLodSceneNode::SphereLodRenderNode;
};
/******************************************************************************/
const int SphereRes = 8;
const int SphereLowRes = 6;
class SphereBspSceneNode;
class SphereFragmentSceneNode : public SceneNode
{
public:
SphereFragmentSceneNode(int theta, int phi,
SphereBspSceneNode* sphere);
~SphereFragmentSceneNode();
void move();
void addRenderNodes(SceneRenderer&);
void addShadowNodes(SceneRenderer&);
// Irix 7.2.1 and solaris compilers appear to have a bug. if the
// following declaration isn't public it generates an error when trying
// to declare SphereFragmentSceneNode::FragmentRenderNode a friend in
// SphereBspSceneNode::SphereBspRenderNode. i think this is a bug in the
// compiler because:
// no other compiler complains
// public/protected/private adjust access not visibility
// SphereBspSceneNode isn't requesting access, it's granting it
// protected:
public:
class FragmentRenderNode : public RenderNode
{
public:
FragmentRenderNode(const SphereBspSceneNode*,
int theta, int phi);
~FragmentRenderNode();
const GLfloat* getVertex() const;
void render() override;
const GLfloat* getPosition() const override;
private:
const SphereBspSceneNode* sceneNode;
int theta, phi;
int theta2, phi2;
};
friend class FragmentRenderNode;
private:
SphereBspSceneNode* parentSphere;
FragmentRenderNode renderNode;
};
class SphereBspSceneNode : public SphereSceneNode
{
friend class SphereFragmentSceneNode;
friend class SphereFragmentSceneNode::FragmentRenderNode;
public:
SphereBspSceneNode(const GLfloat pos[3], GLfloat radius);
~SphereBspSceneNode();
void addRenderNodes(SceneRenderer&);
void addShadowNodes(SceneRenderer&);
SceneNode** getParts(int& numParts);
protected:
GLfloat getRadius() const
{
return radius;
}
private:
void freeParts();
protected:
class SphereBspRenderNode : public RenderNode
{
friend class SphereBspSceneNode;
friend class SphereFragmentSceneNode::FragmentRenderNode;
public:
SphereBspRenderNode(const SphereBspSceneNode*);
~SphereBspRenderNode();
void setHighResolution(bool);
void setBaseIndex(int index);
void render() override;
const GLfloat* getPosition() const override;
private:
const SphereBspSceneNode* sceneNode;
bool highResolution;
int baseIndex;
static GLfloat geom[2 * SphereRes * (SphereRes + 1)][3];
static GLfloat lgeom[SphereLowRes * (SphereLowRes + 1)][3];
};
friend class SphereBspRenderNode;
private:
SphereBspRenderNode renderNode;
SphereFragmentSceneNode** parts;
};
/******************************************************************************/
#endif // BZF_SPHERE_SCENE_NODE_H
// Local Variables: ***
// mode: C++ ***
// tab-width: 4 ***
// c-basic-offset: 4 ***
// indent-tabs-mode: nil ***
// End: ***
// ex: shiftwidth=4 tabstop=4
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