home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Graphics 16,000
/
graphics-16000.iso
/
msdos
/
utils
/
graphtal.lzh
/
Graphtal.Amiga
/
Z_Buffer.h
< prev
Wrap
C/C++ Source or Header
|
1992-11-17
|
2KB
|
69 lines
/*
* Z_Buffer.h - class definition for zBuffer renderer.
*
* Copyright (C) 1992, Christoph Streit (streit@iam.unibe.ch)
* University of Berne, Switzerland
* All rights reserved.
*
* This software may be freely copied, modified, and redistributed
* provided that this copyright notice is preserved on all copies.
*
* You may not distribute this software, in whole or in part, as part of
* any commercial product without the express consent of the authors.
*
* There is no warranty or other guarantee of fitness of this software
* for any purpose. It is provided solely "as is".
*
*/
#ifndef Z_Buffer_H
# define Z_Buffer_H
#include <stdio.h>
#include "Vector.h"
#include "ViewTransform.h"
#include "Color.h"
#include "Polygon.h"
//___________________________________________________________ Z_Buffer
class EdgeList;
class Z_Buffer
{
public:
Z_Buffer(ViewTransform* v, const rcString& msg, const rcString& oname);
~Z_Buffer();
void renderTriangle(const Color&, const Vector&, const Vector&, const Vector&);
void renderRectangle(const Color&,
const Vector&, const Vector&, const Vector&, const Vector&);
void renderPolygon(const Color&, Polygon*);
void writePixmap();
long primitives() const;
private:
void addEdge(const Vector&, const Vector&);
void render();
void calculateColor(const Color&, const Vector&, const Vector&);
private:
rcString remark; // remark for the ppm-File
ViewTransform* view; // view transformation to apply
int resX, resY; // screen resolution
FILE* outfile;
EdgeList** yBuckets;
float* zBuffer;
unsigned char* pixmap;
float R, G, B; // current color
int ymin, ymax; // height of current polygon
long numPrimitives; // number of primitives already drawn
};
inline long Z_Buffer::primitives() const {
return numPrimitives;
}
#endif // Z_Buffer_H