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Diffstat (limited to 'Examples/GIFPlot/Include/gifplot.h')
| -rw-r--r-- | Examples/GIFPlot/Include/gifplot.h | 333 |
1 files changed, 333 insertions, 0 deletions
diff --git a/Examples/GIFPlot/Include/gifplot.h b/Examples/GIFPlot/Include/gifplot.h new file mode 100644 index 0000000..85e4c10 --- /dev/null +++ b/Examples/GIFPlot/Include/gifplot.h @@ -0,0 +1,333 @@ +/* ----------------------------------------------------------------------------- + * gifplot.h + * + * Main header file for the GIFPlot library. + * + * Author(s) : David Beazley (beazley@cs.uchicago.edu) + * Copyright (C) 1995-1996 + * + * See the file LICENSE for information on usage and redistribution. + * ----------------------------------------------------------------------------- */ + +#include <stdio.h> +#include <fcntl.h> +#include <float.h> +#include <stdlib.h> +#include <string.h> +#include <limits.h> + +#ifndef GIFPLOT_H + +#ifdef SWIG +%nodefault; +#endif + +/* Pixel is 8-bits */ + +typedef unsigned char Pixel; +typedef float Zvalue; + +/* ------------------------------------------------------------------------ + ColorMap + + Definition and methods for colormaps + ------------------------------------------------------------------------ */ + +typedef struct ColorMap { + unsigned char *cmap; + char *name; +} ColorMap; + +extern ColorMap *new_ColorMap(char *filename); +extern void delete_ColorMap(ColorMap *c); +extern void ColorMap_default(ColorMap *c); +extern void ColorMap_assign(ColorMap *c, int index, int r, int g, int b); +extern int ColorMap_getitem(ColorMap *c, int index); +extern void ColorMap_setitem(ColorMap *c, int index, int value); +extern int ColorMap_write(ColorMap *c, char *filename); + +/* Some default colors */ + +#define BLACK 0 +#define WHITE 1 +#define RED 2 +#define GREEN 3 +#define BLUE 4 +#define YELLOW 5 +#define CYAN 6 +#define MAGENTA 7 + +/*------------------------------------------------------------------------- + FrameBuffer + + This structure defines a simple 8 bit framebuffer. + ------------------------------------------------------------------------- */ + +typedef struct FrameBuffer { + Pixel **pixels; + Zvalue **zbuffer; + unsigned int height; + unsigned int width; + int xmin; /* These are used for clipping */ + int ymin; + int xmax; + int ymax; +} FrameBuffer; + +#define ZMIN 1e+36 + +/* FrameBuffer Methods */ + +extern FrameBuffer *new_FrameBuffer(unsigned int width, unsigned int height); +extern void delete_FrameBuffer(FrameBuffer *frame); +extern int FrameBuffer_resize(FrameBuffer *frame, int width, int height); +extern void FrameBuffer_clear(FrameBuffer *frame, Pixel color); +extern void FrameBuffer_plot(FrameBuffer *frame, int x, int y, Pixel color); +extern void FrameBuffer_horizontal(FrameBuffer *frame, int xmin, int xmax, int y, Pixel color); +extern void FrameBuffer_horizontalinterp(FrameBuffer *f, int xmin, int xmax, int y, Pixel c1, Pixel c2); +extern void FrameBuffer_vertical(FrameBuffer *frame, int ymin, int ymax, int x, Pixel color); +extern void FrameBuffer_box(FrameBuffer *frame, int x1, int y1, int x2, int y2, Pixel color); +extern void FrameBuffer_solidbox(FrameBuffer *frame, int x1, int y1, int x2, int y2, Pixel color); +extern void FrameBuffer_interpbox(FrameBuffer *f, int x1, int y1, int x2, int y2, Pixel c1, Pixel c2, Pixel c3, Pixel c4); +extern void FrameBuffer_circle(FrameBuffer *frame, int x1, int y1, int radius, Pixel color); +extern void FrameBuffer_solidcircle(FrameBuffer *frame, int x1, int y1, int radius, Pixel color); +extern void FrameBuffer_line(FrameBuffer *frame, int x1, int y1, int x2, int y2, Pixel color); +extern void FrameBuffer_setclip(FrameBuffer *frame, int xmin, int ymin, int xmax, int ymax); +extern void FrameBuffer_noclip(FrameBuffer *frame); +extern int FrameBuffer_makeGIF(FrameBuffer *frame, ColorMap *cmap, void *buffer, unsigned int maxsize); +extern int FrameBuffer_writeGIF(FrameBuffer *f, ColorMap *c, char *filename); +extern void FrameBuffer_zresize(FrameBuffer *f, int width, int height); +extern void FrameBuffer_zclear(FrameBuffer *f); +extern void FrameBuffer_solidtriangle(FrameBuffer *f, int x1, int y1, int x2, int y2, int x3, int y3, Pixel c); +extern void FrameBuffer_interptriangle(FrameBuffer *f, int tx1, int ty1, Pixel c1, + int tx2, int ty2, Pixel c2, int tx3, int ty3, Pixel c3); + +#define HORIZONTAL 1 +#define VERTICAL 2 + +extern void FrameBuffer_drawchar(FrameBuffer *frame, int x, int y, int fgcolor, int bgcolor, char chr, int orientation); +extern void FrameBuffer_drawstring(FrameBuffer *f, int x, int y, int fgcolor, int bgcolor, char *text, int orientation); + +/* ------------------------------------------------------------------------ + PixMap + + The equivalent of "bit-maps". + ------------------------------------------------------------------------ */ + +typedef struct PixMap { + int width; + int height; + int centerx; + int centery; + int *map; +} PixMap; + +/* PIXMAP methods */ + +extern PixMap *new_PixMap(int width, int height, int centerx, int centery); +extern void delete_PixMap(PixMap *pm); +extern void PixMap_set(PixMap *pm, int x, int y, int pix); +extern void FrameBuffer_drawpixmap(FrameBuffer *f, PixMap *pm, int x, int y, int fgcolor, int bgcolor); + +#define GIFPLOT_TRANSPARENT 0 +#define GIFPLOT_FOREGROUND 1 +#define GIFPLOT_BACKGROUND 2 + +/* ------------------------------------------------------------------------ + Plot2D + + Definition and methods for 2D plots. + ------------------------------------------------------------------------ */ + +typedef struct Plot2D { + FrameBuffer *frame; /* what frame buffer are we using */ + int view_xmin; /* Minimum coordinates of view region */ + int view_ymin; + int view_xmax; /* Maximum coordinates of view region */ + int view_ymax; + double xmin; /* Minimum coordinates of plot region */ + double ymin; + double xmax; /* Maximum coordinates of plot region */ + double ymax; + int xscale; /* Type of scaling (LINEAR, LOG, etc..) */ + int yscale; + double dx; /* Private scaling parameters */ + double dy; +} Plot2D; + +/* 2D Plot methods */ + +extern Plot2D *new_Plot2D(FrameBuffer *frame,double xmin,double ymin, double xmax, double ymax); +extern void delete_Plot2D(Plot2D *p2); +extern Plot2D *Plot2D_copy(Plot2D *p2); +extern void Plot2D_clear(Plot2D *p2, Pixel c); +extern void Plot2D_setview(Plot2D *p2, int vxmin, int vymin, int vxmax, int vymax); +extern void Plot2D_setrange(Plot2D *p2, double xmin, double ymin, double xmax, double ymax); +extern void Plot2D_setscale(Plot2D *p2, int xscale, int yscale); +extern void Plot2D_plot(Plot2D *p2, double x, double y, Pixel color); +extern void Plot2D_box(Plot2D *p2, double x1, double y1, double x2, double y2, Pixel color); +extern void Plot2D_solidbox(Plot2D *p2, double x1, double y1,double x2, double y2, Pixel color); +extern void Plot2D_interpbox(Plot2D *p2, double x1, double y1, double x2, double y2, Pixel c1, Pixel c2, Pixel c3, Pixel c4); +extern void Plot2D_circle(Plot2D *p2, double x, double y, double radius, Pixel color); +extern void Plot2D_solidcircle(Plot2D *p2, double x, double y, double radius, Pixel color); +extern void Plot2D_line(Plot2D *p2, double x1, double y1, double x2, double y2, Pixel color); +extern void Plot2D_start(Plot2D *p2); +extern void Plot2D_drawpixmap(Plot2D *p2, PixMap *pm, double x, double y, Pixel color, Pixel bgcolor); +extern void Plot2D_xaxis(Plot2D *p2, double x, double y, double xtick, int ticklength, Pixel c); +extern void Plot2D_yaxis(Plot2D *p2, double x, double y, double ytick, int ticklength, Pixel c); +extern void Plot2D_triangle(Plot2D *p2, double x1, double y1, double x2, double y2, double x3, double y3, Pixel c); +extern void Plot2D_solidtriangle(Plot2D *p2, double x1, double y1, double x2, double y2, double x3, double y3, Pixel c); +extern void Plot2D_interptriangle(Plot2D *p2, double x1, double y1, Pixel c1, + double x2, double y2, Pixel c2, + double x3, double y3, Pixel c3); + +#define LINEAR 10 +#define LOG 11 + +/* ----------------------------------------------------------------------- + Matrix + + Operations on 4x4 transformation matrices and vectors. + Matrices are represented as a double array of 16 elements + ----------------------------------------------------------------------- */ + +typedef double *Matrix; +typedef struct GL_Vector { + double x; + double y; + double z; + double w; +} GL_Vector; + +extern Matrix new_Matrix(); +extern void delete_Matrix(Matrix a); +extern Matrix Matrix_copy(Matrix a); +extern void Matrix_multiply(Matrix a, Matrix b, Matrix c); +extern void Matrix_identity(Matrix a); +extern void Matrix_zero(Matrix a); +extern void Matrix_transpose(Matrix a, Matrix result); +extern void Matrix_invert(Matrix a, Matrix inva); +extern void Matrix_transform(Matrix a, GL_Vector *r, GL_Vector *t); +extern void Matrix_transform4(Matrix a, double rx, double ry, double rz, + double rw, GL_Vector *t); + +extern void Matrix_print(Matrix a); +extern void Matrix_translate(Matrix a, double tx, double ty, double tz); +extern void Matrix_rotatex(Matrix a, double deg); +extern void Matrix_rotatey(Matrix a, double deg); +extern void Matrix_rotatez(Matrix a, double deg); + +/* ----------------------------------------------------------------------- + Plot3D + + Data Structure for 3-D plots + ------------------------------------------------------------------------ */ + +typedef struct Plot3D { + FrameBuffer *frame; /* Frame buffer being used */ + int view_xmin; /* Viewing region */ + int view_ymin; + int view_xmax; + int view_ymax; + double xmin; /* Bounding box */ + double ymin; + double zmin; + double xmax; + double ymax; + double zmax; + double xcenter; /* Center point */ + double ycenter; + double zcenter; + double fovy; /* Field of view */ + double aspect; /* Aspect ratio */ + double znear; /* near "clipping" plane */ + double zfar; /* far "clipping" plane */ + Matrix center_mat; /* Matrix used for centering the model */ + Matrix model_mat; /* Model rotation matrix */ + Matrix view_mat; /* Viewing matrix */ + Matrix fullmodel_mat; /* Full model matrix. Used by sphere plot */ + Matrix trans_mat; /* Total transformation matrix */ + double lookatz; /* Where is the z-lookat point */ + double xshift; /* Used for translation and stuff */ + double yshift; + double zoom; + int width; + int height; + int pers_mode; /* Perspective mode (private) */ + double ortho_left,ortho_right,ortho_bottom,ortho_top; +} Plot3D; + +extern Plot3D *new_Plot3D(FrameBuffer *frame, double xmin, double ymin, double zmin, + double xmax, double ymax, double zmax); +extern void delete_Plot3D(Plot3D *p3); +extern Plot3D *Plot3D_copy(Plot3D *p3); +extern void Plot3D_clear(Plot3D *p3, Pixel Color); +extern void Plot3D_perspective(Plot3D *p3, double fovy, double znear, double zfar); +extern void Plot3D_ortho(Plot3D *p3, double left, double right, double top, double bottom); +extern void Plot3D_lookat(Plot3D *p3, double z); +extern void Plot3D_autoperspective(Plot3D *p3, double fovy); +extern void Plot3D_autoortho(Plot3D *p3); +extern void Plot3D_rotx(Plot3D *p3, double deg); +extern void Plot3D_roty(Plot3D *p3, double deg); +extern void Plot3D_rotz(Plot3D *p3, double deg); +extern void Plot3D_rotl(Plot3D *p3, double deg); +extern void Plot3D_rotr(Plot3D *p3, double deg); +extern void Plot3D_rotd(Plot3D *p3, double deg); +extern void Plot3D_rotu(Plot3D *p3, double deg); +extern void Plot3D_rotc(Plot3D *p3, double deg); +extern void Plot3D_zoom(Plot3D *p3, double percent); +extern void Plot3D_left(Plot3D *p3, double percent); +extern void Plot3D_right(Plot3D *p3, double percent); +extern void Plot3D_down(Plot3D *p3, double percent); +extern void Plot3D_up(Plot3D *p3, double percent); +extern void Plot3D_center(Plot3D *p3, double cx, double cy); + +extern void Plot3D_plot(Plot3D *p3, double x, double y, double z, Pixel Color); + +extern void Plot3D_setview(Plot3D *p3, int vxmin, int vymin, int vxmax, int vymax); +extern void Plot3D_start(Plot3D *p3); +extern void Plot3D_line(Plot3D *p3, double x1, double y1, double z1, + double x2, double y2, double z2, Pixel color); +extern void Plot3D_triangle(Plot3D *p3, double x1, double y1, double z1, + double x2, double y2, double z2, + double x3, double y3, double z3, Pixel color); +extern void Plot3D_solidtriangle(Plot3D *p3, double x1, double y1, double z1, + double x2, double y2, double z2, + double x3, double y3, double z3, Pixel color); + +extern void Plot3D_interptriangle(Plot3D *p3, + double x1, double y1, double z1, Pixel c1, + double x2, double y2, double z2, Pixel c2, + double x3, double y3, double z3, Pixel c3); + +extern void Plot3D_quad(Plot3D *p3, double x1, double y1, double z1, + double x2, double y2, double z2, + double x3, double y3, double z3, + double x4, double y4, double z4, + Pixel color); + +extern void Plot3D_solidquad(Plot3D *p3, double x1, double y1, double z1, + double x2, double y2, double z2, + double x3, double y3, double z3, + double x4, double y4, double z4, + Pixel color); + +extern void Plot3D_interpquad(Plot3D *p3, double x1, double y1, double z1, Pixel c1, + double x2, double y2, double z2, Pixel c2, + double x3, double y3, double z3, Pixel c3, + double x4, double y4, double z4, Pixel c4); + + +extern void Plot3D_solidsphere(Plot3D *p3, double x, double y, double z, double radius,Pixel c); + +extern void Plot3D_outlinesphere(Plot3D *p3, double x, double y, double z, double radius,Pixel c, Pixel bc); + +extern PixMap PixMap_SQUARE; +extern PixMap PixMap_TRIANGLE; +extern PixMap PixMap_CROSS; + +#endif +#define GIFPLOT_H + + + |