SDL.H

// SDL.h // definition of simple support classes: //3D Classes for Graphics #ifndef _BasicStuff #define _BasicStuff #include <string> #include <iostream> #include <fstream> #include <strstream> using namespace std; //#include <windows.h> #include <assert.h> #include <math.h> #include <GL/gl.h> #include <GL/glu.h> #include <GL/glut.h> // include RGBpixmap if you wish to add pixmap field to Scene: //#include "RGBpixmap.h" //@@@@@@@@@@@@@@@@@@ Point3 class @@@@@@@@@@@@@@@@ class Point3{ public: float x,y,z; void set(float dx, float dy, float dz){x = dx; y = dy; z = dz;} void set(Point3& p){x = p.x; y = p.y; z = p.z;} Point3(float xx, float yy, float zz){x = xx; y = yy; z = zz;} Point3(){x = y = z = 0;} void build4tuple(float v[]) {// load 4-tuple with this color: v[3] = 1 for homogeneous v[0] = x; v[1] = y; v[2] = z; v[3] = 1.0f; } }; //@@@@@@@@@@@@@@@@@@ Vector3 class @@@@@@@@@@@@@@@@ class Vector3{ public: float x,y,z; void set(float dx, float dy, float dz){ x = dx; y = dy; z = dz;} void set(Vector3& v){ x = v.x; y = v.y; z = v.z;} void flip(){x = -x; y = -y; z = -z;} // reverse this vector void setDiff(Point3& a, Point3& b)//set to difference a - b { x = a.x - b.x; y = a.y - b.y; z = a.z - b.z;} void normalize();//adjust this vector to unit length Vector3(float xx, float yy, float zz){x = xx; y = yy; z = zz;} Vector3(Vector3& v){x = v.x; y = v.y; z = v.z;} Vector3(){x = y = z = 0;} //default constructor Vector3 cross(Vector3 b); //return this cross b float dot(Vector3 b); // return this dotted with b }; // @@@@@@@@@@@@@@@@@@@@@ Color3 class @@@@@@@@@@@@@@@@ class Color3 { // holds an red,green,blue 3-tuple public: float red, green, blue; Color3(){red = green = blue = 0;} Color3(float r, float g, float b){red = r; green = g; blue = b;} Color3(Color3& c){red = c.red; green = c.green; blue = c.blue;} void set(float r, float g, float b){red = r; green = g; blue = b;} void set(Color3& c) {red = c.red; green = c.green; blue = c.blue;} void add(float r, float g, float b) {red += r; green += g; blue += b;} void add(Color3& src, Color3& refl); void add(Color3& colr); void build4tuple(float v[]); }; //@@@@@@@@@@@@@@@@@@@@ light class @@@@@@@@@@@@@@@@@@@ class Light{ // for a linked list of light sources?color and position public: Point3 pos; Color3 color; Light* next; void setPosition(Point3 p){pos.set(p);} void setColor(Color3 c){color.set(c);} Light(){next = NULL;} }; // @@@@@@@@@@@@@@@@@@@@@ Affine4 class @@@@@@@@@@@@@@@@ class Affine4 {// manages homogeneous affine transformations // including inverse transformations // and a stack to put them on // used by Scene class to read SDL files public: float m[16]; // hold a 4 by 4 matrix Affine4(); void setIdentityMatrix(); void set(Affine4 a); void preMult(Affine4 n); void postMult(Affine4 n); }; // end of Affine4 class //@@@@@@@@@@ AffineNode class @@@@@@@@@@@ class AffineNode{ // used by Scene class to read SDL files public: Affine4 * affn; Affine4 * invAffn; AffineNode * next; AffineNode() { next = NULL; affn = new Affine4; // new affine with identity in it invAffn = new Affine4; // and for the inverse } ~AffineNode() //destructor { delete affn; delete invAffn; } }; //@@@@@@@@@@@@@@@@ AffineStack class @@@@@@@@@@@@ class AffineStack{ // used by Scene class to read SDL files public: AffineNode * tos; AffineStack()//default constructor;puts identity on top { tos = new AffineNode; // node with identity in it tos->next = NULL; } void dup(); void setIdentity();// make top item the identity matrix void popAndDrop(); void releaseAffines(); // pop and drop all remaining items void rotate(float angle, Vector3 u); void scale(float sx, float sy, float sz); void translate(Vector3 d); }; // end of AffineStack class //this was Shapes.h //Shapes class and Supporting classes //@@@@@@@@@@@@@@@@@ Material class @@@@@@@@@@@@@@ class Material{ public: Color3 ambient, diffuse, specular, emissive; int numParams; // for textures float params[10]; // for textures int textureType; // 0 for none, neg for solids, pos for images float specularExponent, reflectivity, transparency, speedOfLight; float specularFraction, surfaceRoughness; void setDefault(); void set(Material& m); }; // end of Material //@@@@@@@@@@@@@@@@@@@@@ GeomObj class @@@@@@@@@@@@@@@@ class GeomObj{ public: //IntRect scrnExtnt; GeomObj * next; GeomObj(): next(NULL){} virtual void loadStuff(){} virtual void drawOpenGL(){} virtual void tellMaterialsGL(){} }; //@@@@@@@@@@@@@@@@@@@ Boolean @@@@@@@@@@@@@@@@@@ class Boolean: public GeomObj{ public: GeomObj *left, *right; Boolean():left(NULL),right(NULL){} virtual void drawOpenGL() { // just draw its children if(left)left->drawOpenGL(); if(right)right->drawOpenGL(); } }; //@@@@@@@@@@@@@@@@@@@@ UnionBool @@@@@@@@@@@@@@@@ class UnionBool : public Boolean{ public: UnionBool(){Boolean();} //constructor }; //@@@@@@@@@@@@@@@@@@@@ IntersectionBool @@@@@@@@@@@@@@@@ class IntersectionBool : public Boolean{ public: IntersectionBool(){Boolean();} }; //@@@@@@@@@@@@@@@@@@@@ DifferenceBool @@@@@@@@@@@@@@@@ class DifferenceBool : public Boolean{ public: DifferenceBool(){Boolean();} }; //@@@@@@@@@@@@@@@@@ Shape @@@@@@@@@@@@@@@@@@@@@ class Shape: public GeomObj{ public: Material mtrl; Affine4 transf,invTransf; //virtual Color3 texture(HitInfo& h, int whichTexture); Shape(){mtrl.textureType = 0; mtrl.numParams = 0;} void setMaterial(Material& mt){mtrl.set(mt);} void tellMaterialsGL(); virtual void drawOpenGL(){} }; //end: Shape class //@$@$@$@$@$@$@$@$@ Cube class $@$@$@$@$@$@$@$@$@$@ class Cube : public Shape{ public: Cube(){} void drawOpenGL() { tellMaterialsGL(); glPushMatrix(); glMultMatrixf(transf.m); //load affine glEnable(GL_NORMALIZE); glutSolidCube(1.0); // a cuber with vertices -1 to +1 glPopMatrix(); } }; class Cone : public Shape{ public: Cone(){} void drawOpenGL() { tellMaterialsGL(); glPushMatrix(); glMultMatrixf(transf.m); //load affine glEnable(GL_NORMALIZE); glutSolidCone(1.0, 1.0 , 20, 20); // a cone glPopMatrix(); } }; //@$@$@$@$@$@$@$@$ Sphere class @$@$@$@$@$@$@$@$@$@$@$@ class Sphere : public Shape{ public: void drawOpenGL() { tellMaterialsGL(); glPushMatrix(); glMultMatrixf(transf.m); glutSolidSphere(1.0,20,20); glPopMatrix(); } Sphere() { } }; //@$@$@$@$@$@$@$@$@$@ TaperedCylinder class @$@$@$@$@$@$@$@$@$ class TaperedCylinder : public Shape{ public: float smallRadius; TaperedCylinder(){} void drawOpenGL(){tellMaterialsGL(); glPushMatrix(); glMultMatrixf(transf.m); GLUquadricObj * qobj = gluNewQuadric(); gluCylinder(qobj,1.0,smallRadius,1.0, 30,3); gluDisk(qobj, 0.0, 1.0, 10,4); //base at z = 0 glTranslatef(0,0,1.0); gluDisk(qobj, 0.0, smallRadius, 30,2); //cap at z = 1 glPopMatrix(); } }; //@$@$@$@$@$@$@$@$@$@ Square class @$@$@$@$@$@$@$@$@$ class Square : public Shape{ public: Square(){} void drawOpenGL() { tellMaterialsGL(); glPushMatrix(); glMultMatrixf(transf.m); glEnable(GL_NORMALIZE); glBegin(GL_QUADS); glNormal3f(0,0,1.0); glVertex3f(-1.0,-1.0,0); glVertex3f( 1.0,-1.0,0); glVertex3f( 1.0, 1.0,0); glVertex3f(-1.0, 1.0,0); glEnd(); glPopMatrix(); } }; //@$@$@$@$@$@$@$@$@$@ Plane class @$@$@$@$@$@$@$@$@$ class Plane : public Shape{ public: Plane() {} void drawOpenGL() { tellMaterialsGL(); glPushMatrix(); glMultMatrixf(transf.m); glEnable(GL_NORMALIZE); glBegin(GL_QUADS); glNormal3f(0,0,1.0); glVertex3f(-10.0,-10.0,0); glVertex3f( 10.0,-10.0,0); glVertex3f( 10.0, 10.0,0); glVertex3f(-10.0, 10.0,0); glEnd(); glPopMatrix(); } }; //################## class VertexID ################ //used to define a Mesh class VertexID{public: int vertIndex, normIndex;}; //################# class FACE ############## //used to define a Mesh class Face{ public: int nVerts; VertexID * vert; // array of vertex and normal indices Face(){ nVerts = 0; vert = NULL;} ~Face(){delete[] vert; nVerts = 0;} }; //@$@$@$@$@$@$@$@$@$@ Mesh class @$@$@$@$@$@$@$@$@$ class Mesh : public Shape{ private: int numVerts, numNorms, numFaces; Point3 *pt; // array of points Vector3 *norm; // array of normals Face *face; // array of faces int lastVertUsed; int lastNormUsed; int lastFaceUsed; public: void readMesh(string fname); void writeMesh(char* fname); void printMesh(); void drawMesh(); void drawEdges(); void freeMesh(); int isEmpty(); void makeEmpty(); Mesh(); virtual void drawOpenGL(); Mesh(string fname); Vector3 newell4(int indx[]); string meshFileName; // holds file name for this Mesh }; // end of Mesh class //@$@$@$@$@$@$@$@$@$@ Torus class @$@$@$@$@$@$@$@$@$ class Torus : public Shape{ public: void drawOpenGL(){ tellMaterialsGL(); glPushMatrix(); glMultMatrixf(transf.m); glutSolidTorus(0.2,1.0,20,20); //if(doEdges) glutWireTorus(0.2,1.0,10,12); glPopMatrix();} }; //@$@$@$@$@$@$@$@$@$@ Teapot class @$@$@$@$@$@$@$@$@$ class Teapot : public Shape{ public: void drawOpenGL(){ tellMaterialsGL(); glPushMatrix(); glMultMatrixf(transf.m); glutSolidTeapot(1.0); glPopMatrix();} }; class Tetrahedron : public Shape{ public: void drawOpenGL(){ tellMaterialsGL(); glPushMatrix(); glMultMatrixf(transf.m); glutSolidTetrahedron(); glPopMatrix(); } }; class Octahedron : public Shape{ public: void drawOpenGL(){ tellMaterialsGL(); glPushMatrix(); glMultMatrixf(transf.m); glutSolidOctahedron(); glPopMatrix();} }; class Dodecahedron : public Shape{ public: void drawOpenGL(){tellMaterialsGL(); glPushMatrix(); glMultMatrixf(transf.m); glutSolidDodecahedron(); glPopMatrix();} }; class Icosahedron : public Shape{ public: void drawOpenGL(){ tellMaterialsGL(); glPushMatrix(); glMultMatrixf(transf.m); glutSolidIcosahedron(); glPopMatrix();} }; // this was scene.h // uses several of the basic classes developed above // uses classes: DefUnit, DefUnitStack // uses Affine4 and associated classes // uses Shapes class as well //@@@@@@@@@@@@@@@@@ DefUnit & DefUnitStack classes @@@@@@@@@@@@@@ //used in Scene to read SDL files class DefUnit { // developed by Steve Morin public: string name, stuff; DefUnit(string n, string s) {stuff = s;name = n;} }; class DefUnitStack { public: DefUnitStack() {stack = NULL;} void push(string n, string s); void print(); int search(string s); string contents(string s); void release(); private: struct D4S { DefUnit *current; struct D4S *next; } d4s; D4S *stack; }; // end of DefUnitStack class //+++++++++++++ TokenType +++++++++++++ enum mTokenType {IDENT, LIGHT, ROTATE, TRANSLATE, SCALE, PUSH, POP, IDENTITYAFFINE, GLOBALAMBIENT, BACKGROUND, MINREFLECTIVITY, MINTRANSPARENCY, MAXRECURSIONDEPTH, CUBE, SPHERE, TORUS, PLANE, SQUARE, CYLINDER, CONE, TAPEREDCYLINDER,TETRAHEDRON, OCTAHEDRON, DODECAHEDRON, ICOSAHEDRON,BUCKYBALL, TEAPOT, DIAMOND,UNION,INTERSECTION, DIFFERENCEa, MAKEPIXMAP, MESH, DEFAULTMATERIALS, AMBIENT, DIFFUSE,SPECULAR, SPECULARFRACTION, SURFACEROUGHNESS,EMISSIVE, SPECULAREXPONENT, SPEEDOFLIGHT, TRANSPARENCY,REFLECTIVITY, PARAMETERS, TEXTURE, LFTCURLY, RGHTCURLY, DEF, USE, T_NULL, F_EOF, UNKNOWN }; //@@@@@@@@@@@@@ Scene class @@@@@@@@@@@@@@@@@@@@ class Scene{ public: Light *light; // attach linked list of lights here GeomObj * obj; // attach the object list here Color3 background, ambient; int maxRecursionDepth; //must #include RGBpixmap.h to have following texture fields //RGBpixmap pixmap[8]; //list of attached pixmaps float minReflectivity, minTransparency; //bool isInShadow(Ray& f); // for ray tracing: implementation left to the reader Scene():light(NULL),obj(NULL),tail(NULL) //default constructor { currMtrl.setDefault(); background.set(0,0,0.6f); ambient.set(0.1f,0.1f,0.1f); minReflectivity = 0.5; minTransparency = 0.5; maxRecursionDepth = 3; } Scene(string fname){Scene(); read(fname);} void freeScene(); void makeLightsOpenGL(); void drawSceneOpenGL(); bool read(string fname); GeomObj* getObject(); private: // private stuff used only for reading a scene int line; int nextline; ifstream *file_in; strstream *f_in; strstream temp_fin; DefUnitStack *def_stack; GeomObj * tail; // tail of object list AffineStack affStk; // affine stack Material currMtrl; string nexttoken(void); float getFloat(); bool isidentifier(string keyword); void cleanUp(); mTokenType whichtoken(string keyword); }; // end of Scene.h #endif