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util.h
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/*
* util.h
*
*/
#ifndef UTIL_H_
#define UTIL_H_
//#include <Windows.h>
//#include <GL\glew.h>
//#include <GL\freeglut.h>
#include <GL/gl.h>
#include <GL/glut.h>
#include <iostream>
#include <string>
#include <cmath>
#include <sstream> // for basic math functions such as cos, sin, sqrt
#include "CImg.h"
#include <vector>
using namespace std;
#define FPS 80 // frame per seconds
// define another constant to hold ASCII for Escape key.
#define KEY_ESC 27 // A
//
// ColorName you can refer any color by its name..
// In other words you can use colorname as an index in color array (see below)
enum ColorNames
{
MAROON,
DARK_RED,
BROWN,
FIREBRICK,
CRIMSON,
RED,
TOMATO,
CORAL,
INDIAN_RED,
LIGHT_CORAL,
DARK_SALMON,
SALMON,
LIGHT_SALMON,
ORANGE_RED,
DARK_ORANGE,
ORANGE,
GOLD,
DARK_GOLDEN_ROD,
GOLDEN_ROD,
PALE_GOLDEN_ROD,
DARK_KHAKI,
KHAKI,
OLIVE,
YELLOW,
YELLOW_GREEN,
DARK_OLIVE_GREEN,
OLIVE_DRAB,
LAWN_GREEN,
CHART_REUSE,
GREEN_YELLOW,
DARK_GREEN,
GREEN,
FOREST_GREEN,
LIME,
LIME_GREEN,
LIGHT_GREEN,
PALE_GREEN,
DARK_SEA_GREEN,
MEDIUM_SPRING_GREEN,
SPRING_GREEN,
SEA_GREEN,
MEDIUM_AQUA_MARINE,
MEDIUM_SEA_GREEN,
LIGHT_SEA_GREEN,
DARK_SLATE_GRAY,
TEAL,
DARK_CYAN,
AQUA,
CYAN,
LIGHT_CYAN,
DARK_TURQUOISE,
TURQUOISE,
MEDIUM_TURQUOISE,
PALE_TURQUOISE,
AQUA_MARINE,
POWDER_BLUE,
CADET_BLUE,
STEEL_BLUE,
CORN_FLOWER_BLUE,
DEEP_SKY_BLUE,
DODGER_BLUE,
LIGHT_BLUE,
SKY_BLUE,
LIGHT_SKY_BLUE,
MIDNIGHT_BLUE,
NAVY,
DARK_BLUE,
MEDIUM_BLUE,
BLUE,
ROYAL_BLUE,
BLUE_VIOLET,
INDIGO,
DARK_SLATE_BLUE,
SLATE_BLUE,
MEDIUM_SLATE_BLUE,
MEDIUM_PURPLE,
DARK_MAGENTA,
DARK_VIOLET,
DARK_ORCHID,
MEDIUM_ORCHID,
PURPLE,
THISTLE,
PLUM,
VIOLET,
MAGENTA,
ORCHID,
MEDIUM_VIOLET_RED,
PALE_VIOLET_RED,
DEEP_PINK,
HOT_PINK,
LIGHT_PINK,
PINK,
ANTIQUE_WHITE,
BEIGE,
BISQUE,
BLANCHED_ALMOND,
WHEAT,
CORN_SILK,
LEMON_CHIFFON,
LIGHT_GOLDEN_ROD_YELLOW,
LIGHT_YELLOW,
SADDLE_BROWN,
SIENNA,
CHOCOLATE,
PERU,
SANDY_BROWN,
BURLY_WOOD,
TAN,
ROSY_BROWN,
MOCCASIN,
NAVAJO_WHITE,
PEACH_PUFF,
MISTY_ROSE,
LAVENDER_BLUSH,
LINEN,
OLD_LACE,
PAPAYA_WHIP,
SEA_SHELL,
MINT_CREAM,
SLATE_GRAY,
LIGHT_SLATE_GRAY,
LIGHT_STEEL_BLUE,
LAVENDER,
FLORAL_WHITE,
ALICE_BLUE,
GHOST_WHITE,
HONEYDEW,
IVORY,
AZURE,
SNOW,
BLACKO,
DIM_GRAY,
GRAY,
DARK_GRAY,
SILVER,
LIGHT_GRAY,
GAINSBORO,
WHITE,
BLACK,
SLATE_BM,
};
// set of colors ...
static float colors[][3] = {{0.501960784313726, 0, 0}, {0.545098039215686, 0, 0}, {0.647058823529412, 0.164705882352941, 0.164705882352941}, {0.698039215686275, 0.133333333333333, 0.133333333333333}, {0.862745098039216, 0.0784313725490196, 0.235294117647059}, {1, 0, 0}, {1, 0.388235294117647, 0.278431372549020}, {1, 0.498039215686275, 0.313725490196078}, {0.803921568627451, 0.360784313725490, 0.360784313725490}, {0.941176470588235, 0.501960784313726, 0.501960784313726}, {0.913725490196078, 0.588235294117647, 0.478431372549020}, {1, 0.627450980392157, 0.478431372549020}, {1, 0.270588235294118, 0}, {1, 0.549019607843137, 0}, {1, 0.647058823529412, 0}, {1, 0.843137254901961, 0}, {0.721568627450980, 0.525490196078431, 0.0431372549019608}, {0.854901960784314, 0.647058823529412, 0.125490196078431}, {0.933333333333333, 0.909803921568627, 0.666666666666667}, {0.741176470588235, 0.717647058823529, 0.419607843137255}, {0.941176470588235, 0.901960784313726, 0.549019607843137}, {0.501960784313726, 0.501960784313726, 0}, {1, 1, 0}, {0.603921568627451, 0.803921568627451, 0.196078431372549}, {0.333333333333333, 0.419607843137255, 0.184313725490196}, {0.419607843137255, 0.556862745098039, 0.137254901960784}, {0.486274509803922, 0.988235294117647, 0}, {0.498039215686275, 1, 0}, {0.678431372549020, 1, 0.184313725490196}, {0, 0.392156862745098, 0}, {0, 0.501960784313726, 0}, {0.133333333333333, 0.545098039215686, 0.133333333333333}, {0, 1, 0}, {0.196078431372549, 0.803921568627451, 0.196078431372549}, {0.564705882352941, 0.933333333333333, 0.564705882352941}, {0.596078431372549, 0.984313725490196, 0.596078431372549}, {0.560784313725490, 0.737254901960784, 0.560784313725490}, {0, 0.980392156862745, 0.603921568627451}, {0, 1, 0.498039215686275}, {0.180392156862745, 0.545098039215686, 0.341176470588235}, {0.400000000000000, 0.803921568627451, 0.666666666666667}, {0.235294117647059, 0.701960784313725, 0.443137254901961}, {0.125490196078431, 0.698039215686275, 0.666666666666667}, {0.184313725490196, 0.309803921568627, 0.309803921568627}, {0, 0.501960784313726, 0.501960784313726}, {0, 0.545098039215686, 0.545098039215686}, {0, 1, 1}, {0, 1, 1}, {0.878431372549020, 1, 1}, {0, 0.807843137254902, 0.819607843137255}, {0.250980392156863, 0.878431372549020, 0.815686274509804}, {0.282352941176471, 0.819607843137255, 0.800000000000000}, {0.686274509803922, 0.933333333333333, 0.933333333333333}, {0.498039215686275, 1, 0.831372549019608}, {0.690196078431373, 0.878431372549020, 0.901960784313726}, {0.372549019607843, 0.619607843137255, 0.627450980392157}, {0.274509803921569, 0.509803921568627, 0.705882352941177}, {0.392156862745098, 0.584313725490196, 0.929411764705882}, {0, 0.749019607843137, 1}, {0.117647058823529, 0.564705882352941, 1}, {0.678431372549020, 0.847058823529412, 0.901960784313726}, {0.529411764705882, 0.807843137254902, 0.921568627450980}, {0.529411764705882, 0.807843137254902, 0.980392156862745}, {0.0980392156862745, 0.0980392156862745, 0.439215686274510}, {0, 0, 0.501960784313726}, {0, 0, 0.545098039215686}, {0, 0, 0.803921568627451}, {0, 0, 1}, {0.254901960784314, 0.411764705882353, 0.882352941176471}, {0.541176470588235, 0.168627450980392, 0.886274509803922}, {0.294117647058824, 0, 0.509803921568627}, {0.282352941176471, 0.239215686274510, 0.545098039215686}, {0.415686274509804, 0.352941176470588, 0.803921568627451}, {0.482352941176471, 0.407843137254902, 0.933333333333333}, {0.576470588235294, 0.439215686274510, 0.858823529411765}, {0.545098039215686, 0, 0.545098039215686}, {0.580392156862745, 0, 0.827450980392157}, {0.600000000000000, 0.196078431372549, 0.800000000000000}, {0.729411764705882, 0.333333333333333, 0.827450980392157}, {0.501960784313726, 0, 0.501960784313726}, {0.847058823529412, 0.749019607843137, 0.847058823529412}, {0.866666666666667, 0.627450980392157, 0.866666666666667}, {0.933333333333333, 0.509803921568627, 0.933333333333333}, {1, 0, 1}, {0.854901960784314, 0.439215686274510, 0.839215686274510}, {0.780392156862745, 0.0823529411764706, 0.521568627450980}, {0.858823529411765, 0.439215686274510, 0.576470588235294}, {1, 0.0784313725490196, 0.576470588235294}, {1, 0.411764705882353, 0.705882352941177}, {1, 0.713725490196078, 0.756862745098039}, {1, 0.752941176470588, 0.796078431372549}, {0.980392156862745, 0.921568627450980, 0.843137254901961}, {0.960784313725490, 0.960784313725490, 0.862745098039216}, {1, 0.894117647058824, 0.768627450980392}, {1, 0.921568627450980, 0.803921568627451}, {0.960784313725490, 0.870588235294118, 0.701960784313725}, {1, 0.972549019607843, 0.862745098039216}, {1, 0.980392156862745, 0.803921568627451}, {0.980392156862745, 0.980392156862745, 0.823529411764706}, {1, 1, 0.878431372549020}, {0.545098039215686, 0.270588235294118, 0.0745098039215686}, {0.627450980392157, 0.321568627450980, 0.176470588235294}, {0.823529411764706, 0.411764705882353, 0.117647058823529}, {0.803921568627451, 0.521568627450980, 0.247058823529412}, {0.956862745098039, 0.643137254901961, 0.376470588235294}, {0.870588235294118, 0.721568627450980, 0.529411764705882}, {0.823529411764706, 0.705882352941177, 0.549019607843137}, {0.737254901960784, 0.560784313725490, 0.560784313725490}, {1, 0.894117647058824, 0.709803921568628}, {1, 0.870588235294118, 0.678431372549020}, {1, 0.854901960784314, 0.725490196078431}, {1, 0.894117647058824, 0.882352941176471}, {1, 0.941176470588235, 0.960784313725490}, {0.980392156862745, 0.941176470588235, 0.901960784313726}, {0.992156862745098, 0.960784313725490, 0.901960784313726}, {1, 0.937254901960784, 0.835294117647059}, {1, 0.960784313725490, 0.933333333333333}, {0.960784313725490, 1, 0.980392156862745}, {0.439215686274510, 0.501960784313726, 0.564705882352941}, {0.466666666666667, 0.533333333333333, 0.600000000000000}, {0.690196078431373, 0.768627450980392, 0.870588235294118}, {0.901960784313726, 0.901960784313726, 0.980392156862745}, {1, 0.980392156862745, 0.941176470588235}, {0.941176470588235, 0.972549019607843, 1}, {0.972549019607843, 0.972549019607843, 1}, {0.941176470588235, 1, 0.941176470588235}, {1, 1, 0.941176470588235}, {0.941176470588235, 1, 1}, {1, 0.980392156862745, 0.980392156862745}, {0.411764705882353, 0.411764705882353, 0.411764705882353}, {0.501960784313726, 0.501960784313726, 0.501960784313726}, {0.662745098039216, 0.662745098039216, 0.662745098039216}, {0.752941176470588, 0.752941176470588, 0.752941176470588}, {0.827450980392157, 0.827450980392157, 0.827450980392157}, {0.862745098039216, 0.862745098039216, 0.862745098039216}, {0.980392156862745, 0.501960784313726, 0.447058823529412}, {0.960784313725490, 0.960784313725490, 0.960784313725490}, {1, 1, 1}, {0, 0, 0}, {0.734375, 0.734375, 0.734375}};
// defining some MACROS
#define M_PI 3.141519
#define MAX(A, B) ((A) > (B) ? (A) : (B)) // finds max of two numbers
#define MIN(A, B) ((A) < (B) ? (A) : (B)) // find min of two numbers
#define ABS(A) ((A) < (0) ? -(A) : (A)) // find ABS of a given number
// define some constants
float Deg2Rad(float degree);
float Rad2Deg(float angle);
// function reads the image and give the pixels in
// column major order, every pixel is placed linearly
// in Reg, Green, Blue format and then columnwise same as opengl...
// uses CImg
void ReadImage(string imgname, vector<unsigned char> &imgArray);
// Function draws a circle of given radius and color at the
// given point sx and sy.
void DrawCircle(float sx, float sy, float radius, float *color);
void DrawSquare(int sx, int sy, int size, float *color);
// Function draws a circular curve of given
void Torus2d(int x /*Starting position x*/, int y /*Starting position Y*/,
float angle, // starting angle in degrees
float length, // length of arc in degrees, >0
float radius, // inner radius, >0
float width, // width of torus, >0
unsigned int samples, // number of circle samples, >=3
float *color = NULL);
// Function draws a line between point P1(x1,y1) and P2(x2,y2)
// of given width and colour
void DrawLine(int x1, int y1, int x2, int y2, int lwidth = 3, float *color = NULL);
// Function draws a rectangle with rounded corners at given x,y coordinates
void DrawRoundRect(float x, float y, float width, float height,
float *color = 0, float radius = 0.0);
// Function draws a string at given x,y coordinates
void DrawString(int x, int y, int width, int height, const string &str,
float *color = NULL);
void DrawString(float x, float y, const string &str, float *color = NULL);
// seed the random numbers generator by current time (see the documentation of srand for further help)...
void InitRandomizer();
// This function returns a random value within the specified range of [rmin, rmax] ...
long GetRandInRange(const long &rmin, const long &rmax);
/*To draw a triangle we need three vertices with each vertex having 2-coordinates [x, y] and a color for the triangle.
* This function takes 4 arguments first three arguments (3 vertices + 1 color) to
* draw the triangle with the given color.
* */
void DrawTriangle(int x1, int y1, int x2, int y2, int x3, int y3, float *color);
// Draws a rectangle of the specified color
void DrawRectangle(int sx, int sy, int width, int height, float *color);
// Convert a Number to String...
string Num2Str(int t);
#endif /* UTIL_H_ */