Ejemplo n.º 1
0
int
SpiroCPsToBezier0(spiro_cp *spiros,int n,int isclosed,bezctx *bc)
{
    spiro_seg *s;

    if ( n<=0 )
	return 0;
    if ( isclosed )
	s = run_spiro(spiros,n);
    else {
	char oldty_start = spiros[0].ty;
	char oldty_end   = spiros[n-1].ty;
	spiros[0].ty = '{';
	spiros[n-1].ty = '}';
	s = run_spiro(spiros,n);
	spiros[n-1].ty = oldty_end;
	spiros[0].ty = oldty_start;
    }
    if (s) {
	spiro_to_bpath(s,n,bc);
	free_spiro(s);
	return 1; // success
    }
    return 0 ; // spiro did not converge or encountered non-finite values
}
Ejemplo n.º 2
0
int test_curve(int c) {
    spiro_cp spiro[16];
    int nextknot[17];
    spiro_seg *segs = NULL;
    bezctx *bc;
    int i;

    /* Load sample data so that we can see if library is callable */
    load_test_curve(spiro,nextknot,c);

    /* Check if run_spiro works okay */
    printf("testing run_spiro() using data=path%d[].\n",c);
    if ( (segs=run_spiro(spiro,cl[c]))==0 ) {
	printf("error with run_spiro() using data=path%d[].\n",c);
	return -1;
    }

    /* Quick visual check shows X,Y knots match with each pathN[] */
    for (i=0; i < cl[c]; i++) {
	printf("curve %d, line %d, x=%f y=%f t=%c bend=%f ch=%f th=%f l=%f \n",c,i,segs[i].x,segs[i].y,segs[i].ty,segs[i].bend_th,segs[i].seg_ch,segs[i].seg_th,segs[i].l);
    }

    /* Quick visual check shows X,Y knots match with each pathN[] */
    printf("testing spiro_to_bpath() using data from run_spiro(data=path%d[],len=%d).\n",c,cl[c]);
    bc = new_bezctx_test();
    spiro_to_bpath(segs,cl[c],bc);

    free(segs);

    /* Check if TaggedSpiroCPsToBezier0() works okay */
    printf("---\ntesting TaggedSpiroCPsToBezier0() using data=path%d[].\n",c);
    if ( TaggedSpiroCPsToBezier0(spiro,bc)!=1 ) {
	printf("error with TaggedSpiroCPsToBezier0() using data=path%d[].\n",c);
	return -1;
    }

    /* Check if SpiroCPsToBezier0() works okay */
    printf("---\ntesting SpiroCPsToBezier0() using data=path%d[].\n",c);
    if ( SpiroCPsToBezier0(spiro,cl[c],(c==0 ? 1 : 0),bc)!=1 ) {
	printf("error with SpiroCPsToBezier0() using data=path%d[].\n",c);
	return -1;
    }

    free(bc);
    return 0;
}
Ejemplo n.º 3
0
int
TaggedSpiroCPsToBezier0(spiro_cp *spiros,bezctx *bc)
{
    spiro_seg *s;
    int n;

    for ( n=0; spiros[n].ty!='z' && spiros[n].ty!='}'; ++n );
    if ( spiros[n].ty == '}' ) ++n;

    if ( n<=0 ) return 0; // invalid input
    s = run_spiro(spiros,n);
    if (s) {
	spiro_to_bpath(s,n,bc);
	free_spiro(s);
	return 1; // success
    }
    return 0 ; // spiro did not converge or encountered non-finite values
}