/*
  Greydon Foil
  3.10.04
*/

/* terrain.h */
#ifndef __gfoilhw5_h
#define __gfoilhw5_h

typedef struct grid {
  int numCols;
  int numRows;
  float xllcorner;
  float yllcorner;
  float cellsize;
  float nodataVal;
  char* name;
  float** values; /* col * row */
  float largestHeight;
  float smallestHeight;
} Grid;

Grid* readGrid(char* filename);
Grid* allocateMemory(Grid* inGrid);
void flowDir(void);
void writeGrid(Grid* inGrid, char* filename);
void initAccValues(void);
Grid* flowAcc(void);
float getAccValue(int i, int j);
float sumAccValues(int i, int j);
void idleAnim(void);
Grid* freeMem(Grid* inGrid);
void gotoMainInputLoop(void);
void disAnim(void);
void findCurrentCarZ(void);
void drawCar(void);
void display3d(void);
void main_menu(int value);
void keypress3d(unsigned char key, int x, int y);
void keypress2d(unsigned char key, int x, int y);
void specialKey(int key, int x, int y);
void renderScene(void);
void renderSceneAnim(void);
void printInfo(Grid* inGrid);
void colorFunction(float height);
void initView();
void display2d(void);

#endif