108 lines
3.4 KiB
C++
108 lines
3.4 KiB
C++
/*
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Copyright 2016, 2017 Michele "King_DuckZ" Santullo
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This file is part of MyCurry.
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MyCurry is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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MyCurry is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with MyCurry. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "catch.hpp"
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#include "grid_raytrace.hpp"
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#include "worldgrid.hpp"
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#include "tileindextype.hpp"
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#include "tileproperty.hpp"
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#include <vector>
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TEST_CASE ("Check that 2D raytracing works", "[raytracing][geometry]") {
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using curry::for_each_voxel_under_segment;
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using curry::vec2us;
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using curry::vec2f;
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using curry::WorldTileProperty;
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curry::WorldGrid world(vec2us(64));
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world.set_layers(vec2us(10, 10), std::vector<std::vector<curry::TileIndex>>( {{
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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}}));
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world.set_tile_properties(std::vector<curry::TileProperty>({ curry::TileProperty() }));
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REQUIRE(world.world_size() == vec2us(10));
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REQUIRE(world.layer_count() == 1);
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{
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std::vector<WorldTileProperty> diagonal;
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for_each_voxel_under_segment (
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vec2f(0.0f, 0.0f), //from
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vec2f(640.0f, 640.0f), //to
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vec2us(1, 1), //objsize
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world, //world
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[diagonal](const WorldTileProperty& wtp) mutable {diagonal.push_back(wtp); return true;}
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);
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const auto* tile_prop = &world.tile_property(world.tile(vec2us(0)));
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std::vector<WorldTileProperty> expected {
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WorldTileProperty{vec2us(0, 0), tile_prop},
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WorldTileProperty{vec2us(1, 1), tile_prop},
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WorldTileProperty{vec2us(2, 2), tile_prop},
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WorldTileProperty{vec2us(3, 3), tile_prop},
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WorldTileProperty{vec2us(4, 4), tile_prop},
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WorldTileProperty{vec2us(5, 5), tile_prop},
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WorldTileProperty{vec2us(6, 6), tile_prop},
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WorldTileProperty{vec2us(7, 7), tile_prop},
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WorldTileProperty{vec2us(8, 8), tile_prop},
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WorldTileProperty{vec2us(9, 9), tile_prop}
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};
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CHECK(expected == diagonal);
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}
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}
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TEST_CASE ("Check that segment intersection code used by the raytracing code works", "[geometry][intersection]") {
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using curry::vec2f;
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using curry::segment_intersection;
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{
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//Two segments crossing at <0, 0>
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const vec2f a0(-1.0f, 0.0f);
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const vec2f a1(2.0f, 0.0f);
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const vec2f b0(0.0f, 1.0f);
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const vec2f b1(0.0f, -2.0f);
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const float t1 = segment_intersection(a0, a1, b0, b1);
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CHECK(0.5f == t1);
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CHECK(vec2f(0.0f) == a0 + t1 * a1);
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const float t2 = segment_intersection(b0, b1, a0, a1);
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CHECK(0.5f == t2);
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}
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{
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//a diagonal segment starting off from a vertical segment
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const vec2f a0(-1.0f, 0.0f);
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const vec2f a1(3.0f, 2.0f);
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const vec2f b0(-1.0f, 1.0f);
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const vec2f b1(0.0f, -2.0f);
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const float t1 = segment_intersection(a0, a1, b0, b1);
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CHECK(0.0f == t1);
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const float t2 = segment_intersection(b0, b1, a0, a1);
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CHECK(0.5f == t2);
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}
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}
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