1 files changed, 90 insertions, 0 deletions
diff --git a/libtests/matrix.cc b/libtests/matrix.cc
new file mode 100644
index 00000000..77a058ee
--- /dev/null
+++ b/libtests/matrix.cc
@@ -0,0 +1,90 @@
+#include <qpdf/QPDFMatrix.hh>
+#include <qpdf/QUtil.hh>
+#include <assert.h>
+#include <iostream>
+
+static void check(QPDFMatrix const& m, std::string const& exp)
+{
+    std::string u = m.unparse();
+    if (u != exp)
+    {
+        std::cout << "got " << u << ", wanted " << exp << std::endl;
+    }
+}
+
+static void check_xy(double x, double y, std::string const& exp)
+{
+    std::string u = (QUtil::double_to_string(x, 2) + " " +
+                     QUtil::double_to_string(y, 2));
+    if (u != exp)
+    {
+        std::cout << "got " << u << ", wanted " << exp << std::endl;
+    }
+}
+
+static void check_rect(QPDFObjectHandle::Rectangle const& r,
+                       double llx, double lly, double urx, double ury)
+{
+    std::string actual = (
+        QUtil::double_to_string(r.llx, 2) + " " +
+        QUtil::double_to_string(r.lly, 2) + " " +
+        QUtil::double_to_string(r.urx, 2) + " " +
+        QUtil::double_to_string(r.ury, 2));
+    std::string wanted = (
+        QUtil::double_to_string(llx, 2) + " " +
+        QUtil::double_to_string(lly, 2) + " " +
+        QUtil::double_to_string(urx, 2) + " " +
+        QUtil::double_to_string(ury, 2));
+    if (actual != wanted)
+    {
+        std::cout << "got " << actual << ", wanted " << wanted << std::endl;
+    }
+}
+
+int main()
+{
+    QPDFMatrix m;
+    check(m, "1.00000 0.00000 0.00000 1.00000 0.00000 0.00000");
+    m.translate(10, 20);
+    check(m, "1.00000 0.00000 0.00000 1.00000 10.00000 20.00000");
+    m.scale(1.5, 2);
+    check(m, "1.50000 0.00000 0.00000 2.00000 10.00000 20.00000");
+    double xp = 0;
+    double yp = 0;
+    m.transform(10, 100, xp, yp);
+    check_xy(xp, yp, "25.00 220.00");
+    m.translate(30, 40);
+    check(m, "1.50000 0.00000 0.00000 2.00000 55.00000 100.00000");
+    m.transform(10, 100, xp, yp);
+    check_xy(xp, yp, "70.00 300.00");
+    m.concat(QPDFMatrix(1, 2, 3, 4, 5, 6));
+    check(m, "1.50000 4.00000 4.50000 8.00000 62.50000 112.00000");
+    m.rotatex90(90);
+    check(m, "4.50000 8.00000 -1.50000 -4.00000 62.50000 112.00000");
+    m.rotatex90(180);
+    check(m, "-4.50000 -8.00000 1.50000 4.00000 62.50000 112.00000");
+    m.rotatex90(270);
+    check(m, "-1.50000 -4.00000 -4.50000 -8.00000 62.50000 112.00000");
+    m.rotatex90(180);
+    check(m, "1.50000 4.00000 4.50000 8.00000 62.50000 112.00000");
+    m.rotatex90(12345);
+    check(m, "1.50000 4.00000 4.50000 8.00000 62.50000 112.00000");
+
+    m.transform(240, 480, xp, yp);
+    check_xy(xp, yp, "2582.50 4912.00");
+
+    check(QPDFMatrix(
+              QPDFObjectHandle::parse(
+                  "[3 1 4 1 5 9.26535]").getArrayAsMatrix()),
+          "3.00000 1.00000 4.00000 1.00000 5.00000 9.26535");
+
+    m = QPDFMatrix();
+    m.rotatex90(90);
+    m.translate(200, -100);
+    check_rect(
+        m.transformRectangle(QPDFObjectHandle::Rectangle(10, 20, 30, 50)),
+        50, 210, 80, 230);
+
+    std::cout << "matrix tests done" << std::endl;
+    return 0;
+}