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//a collection of utility methods
#include "rubik-internal.h"
#include <math.h>
#include <float.h>
void
setColor(float* color, float r, float g, float b, float a,
float randomOffset, float randomness)
{
int i;
float ro = randf(randomOffset);
color[0]=r+ro+randf(randomness);
color[1]=g+ro+randf(randomness);
color[2]=b+ro+randf(randomness);
color[3]=a;
for (i=0; i<4; i++)
{
if (color[i]<0)
color[i]=0;
else if (color[i]>1)
color[i]=1;
}
}
void
setSpecifiedColor(float* color, int c)
{
switch (c)
{
case RANDOMCOLOR:
setColor(color, 0, 0, 0, 1, 0, 1);
break;
case BLACK:
setColor(color, 0, 0, 0, 1, 0, 0);
break;
case BLUE:
setColor(color, 0, 0, 1, 1, 0, 0);
break;
case BROWN:
setColor(color, 0.5, 0.25, 0.05, 1, 0, 0);
break;
case CYAN:
setColor(color, 0, 1, 1, 1, 0, 0);
break;
case GREEN:
setColor(color, 0, 1, 0, 1, 0, 0);
break;
case GREY:
setColor(color, 0.5, 0.5, 0.5, 1, 0, 0);
break;
case ORANGE:
setColor(color, 1, 0.5, 0, 1, 0, 0);
break;
case PINK:
setColor(color, 1, 0, 1, 1, 0, 0);
break;
case PURPLE:
setColor(color, 0.5, 0, 1, 1, 0, 0);
break;
case RED:
setColor(color, 1, 0, 0, 1, 0, 0);
break;
case YELLOW:
setColor(color, 1, 1, 0, 1, 0, 0);
break;
case WHITE:
setColor(color, 1, 1, 1, 1, 0, 0);
break;
}
}
void
rotateClockwise(squareRec * square)
{
int m, j, k;
for (m=0; m<hStrips/2; m++)
{
for (j=0; j<hStrips-1-2*m; j++)
{
int pos1 = (vStrips-1-j-m);
int pos2 = j+m;
squareRec tempSquare2 = square[pos2*hStrips+m];
square[pos2*hStrips+m] = square[m*hStrips+pos1];
square[m*hStrips+pos1] = square[pos1*hStrips+(vStrips-1-m)];
square[pos1*hStrips+(vStrips-1-m)] = square[(vStrips-1-m)*hStrips+pos2];
square[(vStrips-1-m)*hStrips+pos2] = tempSquare2;
}
}
for (k=0; k<vStrips; k++)
{
for (j=0; j<hStrips; j++)
{
square[j*hStrips+k].psi = (square[j*hStrips+k].psi+1)%4;
}
}
}
void rotateAnticlockwise(squareRec * square)
{
int m, j, k;
for (m=0; m<hStrips/2; m++)
{
for (j=0; j<hStrips-1-2*m; j++)
{
int pos1 = (vStrips-1-j-m);
int pos2 = j+m;
squareRec tempSquare2 = square[pos2*hStrips+m];
square[pos2*hStrips+m] = square[(vStrips-1-m)*hStrips+pos2];
square[(vStrips-1-m)*hStrips+pos2] = square[pos1*hStrips+(vStrips-1-m)];
square[pos1*hStrips+(vStrips-1-m)] = square[m*hStrips+pos1];
square[m*hStrips+pos1] = tempSquare2;
}
}
for (k=0; k<vStrips; k++)
{
for (j=0; j<hStrips; j++)
{
square[j*hStrips+k].psi = (square[j*hStrips+k].psi+4-1)%4;
}
}
}
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