test_unstroke()

static void test_unstroke ( )

static

Definition at line 364 of file cu_lwstroke.c.

{
        LWGEOM *in, *out;
        char *str;
 
        /* It would be nice if this example returned two arcs (it's the intersection of two circles)
           but it looks like the intersection itself is too sloppy in generating the derived point
           to accurately reconstruct the circles.
        in = lwgeom_from_text("POLYGON((0.5 0,0.471177920604846 -0.292635483024192,0.38581929876693 -0.574025148547634,0.247204418453818 -0.833355349529403,0.0606601717798223 -1.06066017177982,-5.44089437167602e-17 -1.11044268820754,-0.0606601717798188 -1.06066017177982,-0.247204418453816 -0.833355349529406,-0.385819298766929 -0.574025148547639,-0.471177920604845 -0.292635483024197,-0.5 -4.84663372329776e-15,-0.471177920604847 0.292635483024187,-0.385819298766932 0.57402514854763,-0.247204418453821 0.833355349529398,-0.0606601717798256 1.06066017177982,3.45538806345173e-16 1.11044268820754,0.0606601717798183 1.06066017177982,0.247204418453816 0.833355349529407,0.385819298766929 0.574025148547638,0.471177920604845 0.292635483024196,0.5 0))");
        out = lwgeom_unstroke(in);
        str = lwgeom_to_wkt(out, WKT_ISO, 8, NULL);
        printf("%s\n", str);
        ASSERT_STRING_EQUAL(str, "CIRCULARSTRING(-1 0,0 1,0 -1)");
        lwgeom_free(in);
        lwgeom_free(out);
        lwfree(str);
        */
 
        in = lwgeom_from_text("CIRCULARSTRING(-1 0,0 1,0 -1)");
        out = lwgeom_stroke(in,8);
        lwgeom_free(in);
        in = out;
        out = lwgeom_unstroke(in);
        str = lwgeom_to_wkt(out, WKT_ISO, 8, NULL);
        // printf("%s\n", str);
        ASSERT_STRING_EQUAL(str, "CIRCULARSTRING(-1 0,0.70710678 0.70710678,0 -1)");
        lwgeom_free(in);
        lwgeom_free(out);
        lwfree(str);
 
        in = lwgeom_from_text("COMPOUNDCURVE(CIRCULARSTRING(-1 0,0 1,0 -1),(0 -1,-1 -1))");
        out = lwgeom_stroke(in,8);
        lwgeom_free(in);
        in = out;
        out = lwgeom_unstroke(in);
        str = lwgeom_to_wkt(out, WKT_ISO, 8, NULL);
        // printf("%s\n", str);
        ASSERT_STRING_EQUAL(str, "COMPOUNDCURVE(CIRCULARSTRING(-1 0,0.70710678 0.70710678,0 -1),(0 -1,-1 -1))");
        lwgeom_free(in);
        lwgeom_free(out);
        lwfree(str);
 
        in = lwgeom_from_text("COMPOUNDCURVE((-3 -3,-1 0),CIRCULARSTRING(-1 0,0 1,0 -1),(0 -1,0 -1.5,0 -2),CIRCULARSTRING(0 -2,-1 -3,1 -3),(1 -3,5 5))");
        out = lwgeom_stroke(in,8);
        lwgeom_free(in);
        in = out;
        out = lwgeom_unstroke(in);
        str = lwgeom_to_wkt(out, WKT_ISO, 8, NULL);
        // printf("%s\n", str);
        ASSERT_STRING_EQUAL(
            str,
            "COMPOUNDCURVE((-3 -3,-1 0),CIRCULARSTRING(-1 0,0.70710678 "
            "0.70710678,0 -1),(0 -1,0 -1.5,0 -2),CIRCULARSTRING(0 "
            "-2,-0.70710678 -3.70710678,1 -3),(1 -3,5 5))");
        lwgeom_free(in);
        lwgeom_free(out);
        lwfree(str);
 
        in = lwgeom_from_text("COMPOUNDCURVE(CIRCULARSTRING(-1 0,0 1,0 -1),CIRCULARSTRING(0 -1,-1 -2,1 -2))");
        out = lwgeom_stroke(in,8);
        lwgeom_free(in);
        in = out;
        out = lwgeom_unstroke(in);
        str = lwgeom_to_wkt(out, WKT_ISO, 8, NULL);
        // printf("%s\n", str);
        ASSERT_STRING_EQUAL(
            str,
            "COMPOUNDCURVE(CIRCULARSTRING(-1 0,0.70710678 0.70710678,0 "
            "-1),CIRCULARSTRING(0 -1,-0.70710678 -2.70710678,1 -2))");
        lwgeom_free(in);
        lwgeom_free(out);
        lwfree(str);
 
        in = lwgeom_from_text("COMPOUNDCURVE((0 0, 1 1), CIRCULARSTRING(1 1, 2 2, 3 1), (3 1, 4 4))");
        out = lwgeom_stroke(in,8);
        lwgeom_free(in);
        in = out;
        out = lwgeom_unstroke(in);
        str = lwgeom_to_wkt(out, WKT_ISO, 8, NULL);
        ASSERT_STRING_EQUAL(str, "COMPOUNDCURVE((0 0,1 1),CIRCULARSTRING(1 1,2 2,3 1),(3 1,4 4))");
        lwgeom_free(in);
        lwgeom_free(out);
        // printf("%s\n", str);
        lwfree(str);
 
        // See http://trac.osgeo.org/postgis/ticket/2425
        // and http://trac.osgeo.org/postgis/ticket/2420
        in = lwgeom_from_text("LINESTRING(0 0,10 0,10 10,0 10,0 0)");
        out = lwgeom_unstroke(in);
        str = lwgeom_to_wkt(out, WKT_ISO, 8, NULL);
        ASSERT_STRING_EQUAL(str, "LINESTRING(0 0,10 0,10 10,0 10,0 0)");
        lwgeom_free(in);
        lwgeom_free(out);
        lwfree(str);
 
        in = lwgeom_from_text("LINESTRING(10 10,0 10,0 0,10 0)");
        out = lwgeom_unstroke(in);
        str = lwgeom_to_wkt(out, WKT_ISO, 8, NULL);
        ASSERT_STRING_EQUAL(str, "LINESTRING(10 10,0 10,0 0,10 0)");
        // printf("%s\n", str);
        lwgeom_free(in);
        lwgeom_free(out);
        lwfree(str);
 
        in = lwgeom_from_text("LINESTRING(0 0,10 0,10 10,0 10)");
        out = lwgeom_unstroke(in);
        str = lwgeom_to_wkt(out, WKT_ISO, 8, NULL);
        ASSERT_STRING_EQUAL(str, "LINESTRING(0 0,10 0,10 10,0 10)");
        // printf("%s\n", str);
        lwgeom_free(in);
        lwgeom_free(out);
        lwfree(str);
 
        // See http://trac.osgeo.org/postgis/ticket/2412
        in = lwgeom_from_text("LINESTRING(0 0, 1 1)");
        out = lwgeom_unstroke(in);
        str = lwgeom_to_wkt(out, WKT_ISO, 8, NULL);
        // printf("%s\n", str);
        ASSERT_STRING_EQUAL(str, "LINESTRING(0 0,1 1)");
        lwgeom_free(in);
        lwgeom_free(out);
        lwfree(str);
 
        in = lwgeom_from_text("GEOMETRYCOLLECTION(LINESTRING(10 10,10 11),LINESTRING(10 11,11 11),LINESTRING(11 11,10 10))");
        out = lwgeom_stroke(in,8);
        lwgeom_free(in);
        in = out;
        out = lwgeom_unstroke(in);
        str = lwgeom_to_wkt(out, WKT_ISO, 8, NULL);
        ASSERT_STRING_EQUAL(str, "GEOMETRYCOLLECTION(LINESTRING(10 10,10 11),LINESTRING(10 11,11 11),LINESTRING(11 11,10 10))");
        lwgeom_free(in);
        lwgeom_free(out);
        lwfree(str);
 
        in = lwgeom_from_text("GEOMETRYCOLLECTION(LINESTRING(4 4,4 8),CIRCULARSTRING(4 8,6 10,8 8),LINESTRING(8 8,8 4))");
        out = lwgeom_stroke(in,8);
        lwgeom_free(in);
        in = out;
        out = lwgeom_unstroke(in);
        str = lwgeom_to_wkt(out, WKT_ISO, 8, NULL);
        // printf("%s\n", str);
        ASSERT_STRING_EQUAL(str, "GEOMETRYCOLLECTION(LINESTRING(4 4,4 8),CIRCULARSTRING(4 8,6 10,8 8),LINESTRING(8 8,8 4))");
        lwgeom_free(in);
        lwgeom_free(out);
        lwfree(str);
}

References ASSERT_STRING_EQUAL, lwfree(), lwgeom_free(), lwgeom_from_text(), lwgeom_stroke(), lwgeom_to_wkt(), lwgeom_unstroke(), and WKT_ISO.

Referenced by lwstroke_suite_setup().

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