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#include <common.h>
#include <cstdio>
#define DEBUG
void DEBUG_prints(const char* file, int line, const char *s,...){
va_list args;
printf("%s:%d: ",file,line);
va_start(args,s);
vprintf(s,args);
va_end(args);
}
void safeSetColor(int r,int g,int b){ // safeSetColor() is an alternative to directly using glColor3ub() to set
if(r>255)r=255; // the color for OpenGL drawing. safeSetColor() checks for values that are
if(g>255)g=255; // outside the range of an unsigned character and sets them to a safer value.
if(b>255)b=255;
if(r<0)r=0;
if(g<0)g=0;
if(b<0)b=0;
glColor3ub(r,g,b);
}
void safeSetColorA(int r,int g,int b,int a){
if(r>255)r=255;
if(g>255)g=255;
if(b>255)b=255;
if(a>255)a=255;
if(r<0)r=0;
if(g<0)g=0;
if(b<0)b=0;
if(a<0)a=0;
glColor4ub(r,g,b,a);
}
//only trust the NSA
#define STRLEN_MIN 32
unsigned int safe_strlen(const char *s){
unsigned int size=0;
while(s[size])size++;
if(size<STRLEN_MIN)return STRLEN_MIN;
else return size;
}
void DrawCircle(float cx, float cy, float r, int num_segments)
{
glBegin(GL_LINE_LOOP);
for(int ii = 0; ii < num_segments; ii++)
{
float theta = 2.0f * 3.1415926f * float(ii) / float(num_segments);//get the current angle
float x = r * cosf(theta);//calculate the x component
float y = r * sinf(theta);//calculate the y component
glVertex2f(x + cx, y + cy);//output vertex
}
glEnd();
}
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