123 lines
4.3 KiB
C++
123 lines
4.3 KiB
C++
/*
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* This file is part of the ZoneMinder Project. See AUTHORS file for Copyright information
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "zm_catch2.h"
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#include "zm_zone.h"
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TEST_CASE("Zone::ParsePolygonString: basic pixel parsing", "[Zone]") {
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Polygon polygon;
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SECTION("parses a simple rectangle") {
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bool ok = Zone::ParsePolygonString("0,0 639,0 639,479 0,479", polygon);
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REQUIRE(ok);
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auto const &verts = polygon.GetVertices();
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REQUIRE(verts.size() == 4);
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REQUIRE(verts[0] == Vector2(0, 0));
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REQUIRE(verts[1] == Vector2(639, 0));
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REQUIRE(verts[2] == Vector2(639, 479));
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REQUIRE(verts[3] == Vector2(0, 479));
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}
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SECTION("parses a triangle") {
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bool ok = Zone::ParsePolygonString("100,100 200,100 150,200", polygon);
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REQUIRE(ok);
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auto const &verts = polygon.GetVertices();
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REQUIRE(verts.size() == 3);
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REQUIRE(verts[0] == Vector2(100, 100));
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REQUIRE(verts[1] == Vector2(200, 100));
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REQUIRE(verts[2] == Vector2(150, 200));
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}
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SECTION("rejects string with fewer than 3 vertices") {
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// Two vertices — not enough for a polygon, but ParsePolygonString
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// returns true if any vertices were parsed (vertices.empty() check)
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bool ok = Zone::ParsePolygonString("10,20 30,40", polygon);
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REQUIRE(ok);
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// The polygon won't be properly formed but parsing itself doesn't fail
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}
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}
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TEST_CASE("Zone::ParsePercentagePolygon: percentage to pixel conversion", "[Zone]") {
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Polygon polygon;
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unsigned int width = 1920;
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unsigned int height = 1080;
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SECTION("full-frame 0-100% rectangle") {
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bool ok = Zone::ParsePercentagePolygon("0,0 100,0 100,100 0,100", width, height, polygon);
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REQUIRE(ok);
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auto const &verts = polygon.GetVertices();
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REQUIRE(verts.size() == 4);
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REQUIRE(verts[0] == Vector2(0, 0));
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REQUIRE(verts[1] == Vector2(1920, 0));
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REQUIRE(verts[2] == Vector2(1920, 1080));
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REQUIRE(verts[3] == Vector2(0, 1080));
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}
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SECTION("50% rectangle converts to half-resolution pixels") {
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bool ok = Zone::ParsePercentagePolygon("0,0 50,0 50,50 0,50", width, height, polygon);
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REQUIRE(ok);
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auto const &verts = polygon.GetVertices();
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REQUIRE(verts.size() == 4);
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REQUIRE(verts[0] == Vector2(0, 0));
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REQUIRE(verts[1] == Vector2(960, 0));
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REQUIRE(verts[2] == Vector2(960, 540));
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REQUIRE(verts[3] == Vector2(0, 540));
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}
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SECTION("values are clamped to monitor bounds") {
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// 100% should clamp to exact monitor dimensions
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bool ok = Zone::ParsePercentagePolygon("0,0 100,0 100,100 0,100", width, height, polygon);
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REQUIRE(ok);
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auto const &verts = polygon.GetVertices();
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for (auto const &v : verts) {
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REQUIRE(v.x_ >= 0);
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REQUIRE(v.x_ <= static_cast<int>(width));
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REQUIRE(v.y_ >= 0);
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REQUIRE(v.y_ <= static_cast<int>(height));
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}
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}
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}
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TEST_CASE("Zone: pixel values through ParsePercentagePolygon produce wrong results", "[Zone]") {
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// This test demonstrates the bug: when pixel coordinates (>100) are fed
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// through ParsePercentagePolygon, they get treated as percentages and
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// scaled wildly, then clamped to monitor bounds.
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Polygon polygon;
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unsigned int width = 1920;
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unsigned int height = 1080;
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// These are pixel coordinates for a 640x480 region
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bool ok = Zone::ParsePercentagePolygon("0,0 639,0 639,479 0,479", width, height, polygon);
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REQUIRE(ok);
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auto const &verts = polygon.GetVertices();
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REQUIRE(verts.size() == 4);
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// 639% of 1920 = 12268.8 -> clamped to 1920
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// 479% of 1080 = 5173.2 -> clamped to 1080
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// All non-zero coords get clamped to monitor bounds — the zone is
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// degenerate (covers the full monitor instead of a sub-region)
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REQUIRE(verts[1] == Vector2(static_cast<int>(width), 0));
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REQUIRE(verts[2] == Vector2(static_cast<int>(width), static_cast<int>(height)));
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}
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