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magnum/src/Magnum/MeshTools/Test/GenerateLinesTest.cpp

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/*
This file is part of Magnum.
Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
2020, 2021, 2022 Vladimír Vondruš <mosra@centrum.cz>
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.
*/
#include <sstream>
#include <Corrade/TestSuite/Tester.h>
#include <Corrade/TestSuite/Compare/Container.h>
#include <Corrade/Utility/DebugStl.h>
#include "Magnum/Math/Color.h"
#include "Magnum/Math/PackingBatch.h"
#include "Magnum/MeshTools/GenerateLines.h"
#include "Magnum/Shaders/Line.h"
namespace Magnum { namespace MeshTools { namespace Test { namespace {
struct GenerateLinesTest: TestSuite::Tester {
explicit GenerateLinesTest();
template<class T> void oneLoop();
void extraAttributes();
void zeroVertices();
void twoVerticesStrip();
void twoVerticesLoop();
void notLines();
void noAttributes();
void noPositionAttribute();
};
using namespace Math::Literals;
const struct {
const char* name;
MeshPrimitive primitive;
Containers::Array<Vector2> positions;
Containers::Array<UnsignedInt> indices;
bool expectedJoins;
bool expectedJoinsFirstLast;
} OneLoopData[]{
{"loose segments", MeshPrimitive::Lines, {InPlaceInit, {
{-1.0f, -1.0f}, {+1.0f, -1.0f},
{+1.0f, -1.0f}, {+1.0f, +1.0f},
{+1.0f, +1.0f}, {-1.0f, +1.0f},
{-1.0f, +1.0f}, {-1.0f, -1.0f}
}}, nullptr, false, false},
{"loose indexed segments", MeshPrimitive::Lines, {InPlaceInit, {
{-1.0f, -1.0f},
{+1.0f, -1.0f},
{+1.0f, +1.0f},
{-1.0f, +1.0f},
}}, {InPlaceInit, {
0, 1, 1, 2, 2, 3, 3, 0
}}, false, false},
/** @todo indexed segments that get connected */
{"loop", MeshPrimitive::LineLoop, {InPlaceInit, {
{-1.0f, -1.0f},
{+1.0f, -1.0f},
{+1.0f, +1.0f},
{-1.0f, +1.0f},
}}, nullptr, true, true},
{"indexed loop", MeshPrimitive::LineLoop, {InPlaceInit, {
{-1.0f, -1.0f},
{-1.0f, +1.0f},
{+1.0f, -1.0f},
{+1.0f, +1.0f},
}}, {InPlaceInit, {
0, 2, 3, 1
}}, true, true},
{"strip", MeshPrimitive::LineStrip, {InPlaceInit, {
{-1.0f, -1.0f},
{+1.0f, -1.0f},
{+1.0f, +1.0f},
{-1.0f, +1.0f},
{-1.0f, -1.0f},
}}, nullptr, true, false},
{"indexed strip", MeshPrimitive::LineStrip, {InPlaceInit, {
{-1.0f, -1.0f},
{-1.0f, +1.0f},
{+1.0f, -1.0f},
{+1.0f, +1.0f},
}}, {InPlaceInit, {
0, 2, 3, 1, 0
}}, true, false},
/** @todo closed (indexed) strip, once arbitrary index buffer looping is supported */
};
GenerateLinesTest::GenerateLinesTest() {
addInstancedTests<GenerateLinesTest>({
&GenerateLinesTest::oneLoop<UnsignedInt>,
&GenerateLinesTest::oneLoop<UnsignedShort>,
&GenerateLinesTest::oneLoop<UnsignedByte>},
Containers::arraySize(OneLoopData));
addTests({&GenerateLinesTest::extraAttributes,
&GenerateLinesTest::zeroVertices,
&GenerateLinesTest::twoVerticesStrip,
&GenerateLinesTest::twoVerticesLoop,
&GenerateLinesTest::notLines,
&GenerateLinesTest::noAttributes,
&GenerateLinesTest::noPositionAttribute});
}
template<class T> void GenerateLinesTest::oneLoop() {
auto&& data = OneLoopData[testCaseInstanceId()];
setTestCaseTemplateName(Math::TypeTraits<T>::name());
setTestCaseDescription(data.name);
Containers::Array<T> indices{NoInit, data.indices.size()};
Math::castInto(stridedArrayView(data.indices), stridedArrayView(indices));
Trade::MeshData lineMesh{data.primitive,
{}, indices, indices ? Trade::MeshIndexData{indices} : Trade::MeshIndexData{},
{}, data.positions, {
Trade::MeshAttributeData{Trade::MeshAttribute::Position, stridedArrayView(data.positions)}
}};
Trade::MeshData mesh = generateLines(lineMesh);
CORRADE_COMPARE(mesh.primitive(), MeshPrimitive::Triangles);
CORRADE_COMPARE(mesh.attributeCount(), 4);
CORRADE_VERIFY(mesh.isIndexed());
CORRADE_COMPARE(mesh.indexType(), MeshIndexType::UnsignedInt);
if(data.expectedJoins && data.expectedJoinsFirstLast)
CORRADE_COMPARE_AS(mesh.indices<UnsignedInt>(), Containers::arrayView<UnsignedInt>({
2, 0, 1, 1, 3, 2,
2, 3, 4, 4, 3, 5, /* join */
6, 4, 5, 5, 7, 6,
6, 7, 8, 8, 7, 9, /* join */
10, 8, 9, 9, 11, 10,
10, 11, 12, 12, 11, 13, /* join */
14, 12, 13, 13, 15, 14,
14, 15, 0, 0, 15, 1, /* join */
}), TestSuite::Compare::Container);
else if(data.expectedJoins)
CORRADE_COMPARE_AS(mesh.indices<UnsignedInt>(), Containers::arrayView<UnsignedInt>({
2, 0, 1, 1, 3, 2,
2, 3, 4, 4, 3, 5, /* join */
6, 4, 5, 5, 7, 6,
6, 7, 8, 8, 7, 9, /* join */
10, 8, 9, 9, 11, 10,
10, 11, 12, 12, 11, 13, /* join */
14, 12, 13, 13, 15, 14,
}), TestSuite::Compare::Container);
else
CORRADE_COMPARE_AS(mesh.indices<UnsignedInt>(), Containers::arrayView<UnsignedInt>({
2, 0, 1, 1, 3, 2,
6, 4, 5, 5, 7, 6,
10, 8, 9, 9, 11, 10,
14, 12, 13, 13, 15, 14,
}), TestSuite::Compare::Container);
CORRADE_VERIFY(mesh.hasAttribute(Trade::MeshAttribute::Position));
CORRADE_COMPARE(mesh.attributeFormat(Trade::MeshAttribute::Position), VertexFormat::Vector2);
Containers::StridedArrayView1D<const Vector2> positions = mesh.attribute<Vector2>(Trade::MeshAttribute::Position);
CORRADE_COMPARE_AS(positions, Containers::arrayView<Vector2>({
{-1.0f, -1.0f}, {-1.0f, -1.0f},
{+1.0f, -1.0f}, {+1.0f, -1.0f},
{+1.0f, -1.0f}, {+1.0f, -1.0f},
{+1.0f, +1.0f}, {+1.0f, +1.0f},
{+1.0f, +1.0f}, {+1.0f, +1.0f},
{-1.0f, +1.0f}, {-1.0f, +1.0f},
{-1.0f, +1.0f}, {-1.0f, +1.0f},
{-1.0f, -1.0f}, {-1.0f, -1.0f}
}), TestSuite::Compare::Container);
CORRADE_VERIFY(mesh.hasAttribute(Implementation::LineMeshAttributePreviousPosition));
CORRADE_VERIFY(mesh.hasAttribute(Implementation::LineMeshAttributeNextPosition));
CORRADE_VERIFY(mesh.hasAttribute(Implementation::LineMeshAttributeAnnotation));
CORRADE_COMPARE(mesh.attributeFormat(Implementation::LineMeshAttributePreviousPosition), VertexFormat::Vector2);
CORRADE_COMPARE(mesh.attributeFormat(Implementation::LineMeshAttributeNextPosition), VertexFormat::Vector2);
CORRADE_COMPARE(mesh.attributeFormat(Implementation::LineMeshAttributeAnnotation), VertexFormat::UnsignedInt);
if(data.expectedJoins && data.expectedJoinsFirstLast) {
CORRADE_COMPARE_AS(mesh.attribute<Vector2>(Implementation::LineMeshAttributePreviousPosition), Containers::arrayView<Vector2>({
positions[12], positions[12],
positions[0], positions[0],
positions[0], positions[0],
positions[4], positions[4],
positions[4], positions[4],
positions[8], positions[8],
positions[8], positions[8],
positions[12], positions[12],
}), TestSuite::Compare::Container);
CORRADE_COMPARE_AS(mesh.attribute<Vector2>(Implementation::LineMeshAttributeNextPosition), Containers::arrayView<Vector2>({
positions[2], positions[2],
positions[6], positions[6],
positions[6], positions[6],
positions[10], positions[10],
positions[10], positions[10],
positions[14], positions[14],
positions[14], positions[14],
positions[2], positions[2],
}), TestSuite::Compare::Container);
CORRADE_COMPARE_AS((Containers::arrayCast<1, const Shaders::LineVertexAnnotations>(mesh.attribute(Implementation::LineMeshAttributeAnnotation))), Containers::arrayView<Shaders::LineVertexAnnotations>({
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Join,
}), TestSuite::Compare::Container);
} else if(data.expectedJoins) {
CORRADE_COMPARE_AS(mesh.attribute<Vector2>(Implementation::LineMeshAttributePreviousPosition), Containers::arrayView<Vector2>({
{}, {},
positions[0], positions[0],
positions[0], positions[0],
positions[4], positions[4],
positions[4], positions[4],
positions[8], positions[8],
positions[8], positions[8],
positions[12], positions[12],
}), TestSuite::Compare::Container);
CORRADE_COMPARE_AS(mesh.attribute<Vector2>(Implementation::LineMeshAttributeNextPosition), Containers::arrayView<Vector2>({
positions[2], positions[2],
positions[6], positions[6],
positions[6], positions[6],
positions[10], positions[10],
positions[10], positions[10],
positions[14], positions[14],
positions[14], positions[14],
{}, {}
}), TestSuite::Compare::Container);
CORRADE_COMPARE_AS((Containers::arrayCast<1, const Shaders::LineVertexAnnotations>(mesh.attribute(Implementation::LineMeshAttributeAnnotation))), Containers::arrayView<Shaders::LineVertexAnnotations>({
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin,
Shaders::LineVertexAnnotation::Begin,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up,
{},
}), TestSuite::Compare::Container);
} else {
CORRADE_COMPARE_AS(mesh.attribute<Vector2>(Implementation::LineMeshAttributePreviousPosition), Containers::arrayView<Vector2>({
{}, {},
positions[0], positions[0],
{}, {},
positions[4], positions[4],
{}, {},
positions[8], positions[8],
{}, {},
positions[12], positions[12],
}), TestSuite::Compare::Container);
CORRADE_COMPARE_AS(mesh.attribute<Vector2>(Implementation::LineMeshAttributeNextPosition), Containers::arrayView<Vector2>({
positions[2], positions[2],
{}, {},
positions[6], positions[6],
{}, {},
positions[10], positions[10],
{}, {},
positions[14], positions[14],
{}, {},
}), TestSuite::Compare::Container);
CORRADE_COMPARE_AS((Containers::arrayCast<1, const Shaders::LineVertexAnnotations>(mesh.attribute(Implementation::LineMeshAttributeAnnotation))), Containers::arrayView<Shaders::LineVertexAnnotations>({
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin,
Shaders::LineVertexAnnotation::Begin,
Shaders::LineVertexAnnotation::Up,
{},
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin,
Shaders::LineVertexAnnotation::Begin,
Shaders::LineVertexAnnotation::Up,
{},
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin,
Shaders::LineVertexAnnotation::Begin,
Shaders::LineVertexAnnotation::Up,
{},
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin,
Shaders::LineVertexAnnotation::Begin,
Shaders::LineVertexAnnotation::Up,
{},
}), TestSuite::Compare::Container);
}
}
void GenerateLinesTest::extraAttributes() {
const struct Vertex {
Color3ub color;
Vector3b position;
UnsignedShort objectId;
} vertexData[]{
{0xdcdcdc_rgb, {-1, -1, 0}, 156},
{0xdcdcdc_rgb, {+1, -1, 1}, 223},
{0x2f83cc_rgb, {+1, +1, 0}, 999},
{0x2f83cc_rgb, {-1, +1, 1}, 768}
};
auto vertices = Containers::stridedArrayView(vertexData);
Trade::MeshData lineMesh{MeshPrimitive::LineLoop,
{}, vertexData, {
/* Having position not first to catch accidental use of first
attribute as position */
Trade::MeshAttributeData{Trade::MeshAttribute::Color, vertices.slice(&Vertex::color)},
Trade::MeshAttributeData{Trade::MeshAttribute::Position, vertices.slice(&Vertex::position)},
Trade::MeshAttributeData{Trade::MeshAttribute::ObjectId, vertices.slice(&Vertex::objectId)},
}};
Trade::MeshData mesh = generateLines(lineMesh);
CORRADE_COMPARE(mesh.primitive(), MeshPrimitive::Triangles);
CORRADE_COMPARE(mesh.attributeCount(), 6);
CORRADE_VERIFY(mesh.isIndexed());
CORRADE_COMPARE(mesh.indexType(), MeshIndexType::UnsignedInt);
CORRADE_COMPARE_AS(mesh.indices<UnsignedInt>(), Containers::arrayView<UnsignedInt>({
2, 0, 1, 1, 3, 2,
2, 3, 4, 4, 3, 5, /* join */
6, 4, 5, 5, 7, 6,
6, 7, 8, 8, 7, 9, /* join */
10, 8, 9, 9, 11, 10,
10, 11, 12, 12, 11, 13, /* join */
14, 12, 13, 13, 15, 14,
14, 15, 0, 0, 15, 1, /* join */
}), TestSuite::Compare::Container);
CORRADE_VERIFY(mesh.hasAttribute(Trade::MeshAttribute::Position));
CORRADE_COMPARE(mesh.attributeFormat(Trade::MeshAttribute::Position), VertexFormat::Vector3b);
Containers::StridedArrayView1D<const Vector3b> positions = mesh.attribute<Vector3b>(Trade::MeshAttribute::Position);
CORRADE_COMPARE_AS(positions, Containers::arrayView<Vector3b>({
{-1, -1, 0}, {-1, -1, 0},
{+1, -1, 1}, {+1, -1, 1},
{+1, -1, 1}, {+1, -1, 1},
{+1, +1, 0}, {+1, +1, 0},
{+1, +1, 0}, {+1, +1, 0},
{-1, +1, 1}, {-1, +1, 1},
{-1, +1, 1}, {-1, +1, 1},
{-1, -1, 0}, {-1, -1, 0}
}), TestSuite::Compare::Container);
CORRADE_VERIFY(mesh.hasAttribute(Trade::MeshAttribute::Color));
CORRADE_COMPARE(mesh.attributeFormat(Trade::MeshAttribute::Color), VertexFormat::Vector3ubNormalized);
CORRADE_COMPARE_AS(mesh.attribute<Color3ub>(Trade::MeshAttribute::Color), Containers::arrayView<Color3ub>({
0xdcdcdc_rgb, 0xdcdcdc_rgb,
0xdcdcdc_rgb, 0xdcdcdc_rgb,
0xdcdcdc_rgb, 0xdcdcdc_rgb,
0x2f83cc_rgb, 0x2f83cc_rgb,
0x2f83cc_rgb, 0x2f83cc_rgb,
0x2f83cc_rgb, 0x2f83cc_rgb,
0x2f83cc_rgb, 0x2f83cc_rgb,
0xdcdcdc_rgb, 0xdcdcdc_rgb,
}), TestSuite::Compare::Container);
CORRADE_VERIFY(mesh.hasAttribute(Trade::MeshAttribute::ObjectId));
CORRADE_COMPARE(mesh.attributeFormat(Trade::MeshAttribute::ObjectId), VertexFormat::UnsignedShort);
CORRADE_COMPARE_AS(mesh.attribute<UnsignedShort>(Trade::MeshAttribute::ObjectId), Containers::arrayView<UnsignedShort>({
156, 156,
223, 223,
223, 223,
999, 999,
999, 999,
768, 768,
768, 768,
156, 156,
}), TestSuite::Compare::Container);
CORRADE_VERIFY(mesh.hasAttribute(Implementation::LineMeshAttributePreviousPosition));
CORRADE_VERIFY(mesh.hasAttribute(Implementation::LineMeshAttributeNextPosition));
CORRADE_VERIFY(mesh.hasAttribute(Implementation::LineMeshAttributeAnnotation));
CORRADE_COMPARE(mesh.attributeFormat(Implementation::LineMeshAttributePreviousPosition), VertexFormat::Vector3b);
CORRADE_COMPARE(mesh.attributeFormat(Implementation::LineMeshAttributeNextPosition), VertexFormat::Vector3b);
CORRADE_COMPARE(mesh.attributeFormat(Implementation::LineMeshAttributeAnnotation), VertexFormat::UnsignedInt);
CORRADE_COMPARE_AS(mesh.attribute<Vector3b>(Implementation::LineMeshAttributePreviousPosition), Containers::arrayView<Vector3b>({
positions[12], positions[12],
positions[0], positions[0],
positions[0], positions[0],
positions[4], positions[4],
positions[4], positions[4],
positions[8], positions[8],
positions[8], positions[8],
positions[12], positions[12],
}), TestSuite::Compare::Container);
CORRADE_COMPARE_AS(mesh.attribute<Vector3b>(Implementation::LineMeshAttributeNextPosition), Containers::arrayView<Vector3b>({
positions[2], positions[2],
positions[6], positions[6],
positions[6], positions[6],
positions[10], positions[10],
positions[10], positions[10],
positions[14], positions[14],
positions[14], positions[14],
positions[2], positions[2],
}), TestSuite::Compare::Container);
CORRADE_COMPARE_AS((Containers::arrayCast<1, const Shaders::LineVertexAnnotations>(mesh.attribute(Implementation::LineMeshAttributeAnnotation))), Containers::arrayView<Shaders::LineVertexAnnotations>({
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Join,
}), TestSuite::Compare::Container);
}
void GenerateLinesTest::zeroVertices() {
Trade::MeshData lineMesh{MeshPrimitive::LineLoop, nullptr, {
Trade::MeshAttributeData{Trade::MeshAttribute::Position, VertexFormat::Vector3usNormalized, nullptr}
}};
Trade::MeshData mesh = generateLines(lineMesh);
CORRADE_COMPARE(mesh.primitive(), MeshPrimitive::Triangles);
CORRADE_COMPARE(mesh.attributeCount(), 4);
CORRADE_COMPARE(mesh.vertexCount(), 0);
CORRADE_VERIFY(mesh.hasAttribute(Trade::MeshAttribute::Position));
CORRADE_VERIFY(mesh.hasAttribute(Implementation::LineMeshAttributePreviousPosition));
CORRADE_VERIFY(mesh.hasAttribute(Implementation::LineMeshAttributePreviousPosition));
CORRADE_VERIFY(mesh.hasAttribute(Implementation::LineMeshAttributeAnnotation));
}
void GenerateLinesTest::twoVerticesStrip() {
Vector2 positionData[]{
{-1.0f, 0.0f},
{+1.0f, 0.0f}
};
Trade::MeshData lineMesh{MeshPrimitive::LineStrip, {}, positionData, {
Trade::MeshAttributeData{Trade::MeshAttribute::Position, Containers::stridedArrayView(positionData)}
}};
Trade::MeshData mesh = generateLines(lineMesh);
CORRADE_COMPARE(mesh.primitive(), MeshPrimitive::Triangles);
CORRADE_COMPARE(mesh.attributeCount(), 4);
CORRADE_VERIFY(mesh.isIndexed());
CORRADE_COMPARE(mesh.indexType(), MeshIndexType::UnsignedInt);
CORRADE_COMPARE_AS(mesh.indices<UnsignedInt>(), Containers::arrayView<UnsignedInt>({
2, 0, 1, 1, 3, 2,
}), TestSuite::Compare::Container);
CORRADE_VERIFY(mesh.hasAttribute(Trade::MeshAttribute::Position));
CORRADE_COMPARE(mesh.attributeFormat(Trade::MeshAttribute::Position), VertexFormat::Vector2);
Containers::StridedArrayView1D<const Vector2> positions = mesh.attribute<Vector2>(Trade::MeshAttribute::Position);
CORRADE_COMPARE_AS(positions, Containers::arrayView<Vector2>({
{-1.0f, 0.0f}, {-1.0f, 0.0f},
{+1.0f, 0.0f}, {+1.0f, 0.0f},
}), TestSuite::Compare::Container);
CORRADE_VERIFY(mesh.hasAttribute(Implementation::LineMeshAttributePreviousPosition));
CORRADE_COMPARE(mesh.attributeFormat(Implementation::LineMeshAttributePreviousPosition), VertexFormat::Vector2);
CORRADE_COMPARE_AS(mesh.attribute<Vector2>(Implementation::LineMeshAttributePreviousPosition), Containers::arrayView<Vector2>({
{}, {},
positions[0], positions[0],
}), TestSuite::Compare::Container);
CORRADE_VERIFY(mesh.hasAttribute(Implementation::LineMeshAttributePreviousPosition));
CORRADE_COMPARE(mesh.attributeFormat(Implementation::LineMeshAttributeNextPosition), VertexFormat::Vector2);
CORRADE_COMPARE_AS(mesh.attribute<Vector2>(Implementation::LineMeshAttributeNextPosition), Containers::arrayView<Vector2>({
positions[2], positions[2],
{}, {},
}), TestSuite::Compare::Container);
CORRADE_VERIFY(mesh.hasAttribute(Implementation::LineMeshAttributeAnnotation));
CORRADE_COMPARE(mesh.attributeFormat(Implementation::LineMeshAttributeAnnotation), VertexFormat::UnsignedInt);
CORRADE_COMPARE_AS((Containers::arrayCast<1, const Shaders::LineVertexAnnotations>(mesh.attribute(Implementation::LineMeshAttributeAnnotation))), Containers::arrayView<Shaders::LineVertexAnnotations>({
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin,
Shaders::LineVertexAnnotation::Begin,
Shaders::LineVertexAnnotation::Up,
{},
}), TestSuite::Compare::Container);
}
void GenerateLinesTest::twoVerticesLoop() {
Vector2 positionData[]{
{-1.0f, 0.0f},
{+1.0f, 0.0f}
};
Trade::MeshData lineMesh{MeshPrimitive::LineLoop, {}, positionData, {
Trade::MeshAttributeData{Trade::MeshAttribute::Position, Containers::stridedArrayView(positionData)}
}};
Trade::MeshData mesh = generateLines(lineMesh);
CORRADE_COMPARE(mesh.primitive(), MeshPrimitive::Triangles);
CORRADE_COMPARE(mesh.attributeCount(), 4);
CORRADE_VERIFY(mesh.isIndexed());
CORRADE_COMPARE(mesh.indexType(), MeshIndexType::UnsignedInt);
CORRADE_COMPARE_AS(mesh.indices<UnsignedInt>(), Containers::arrayView<UnsignedInt>({
2, 0, 1, 1, 3, 2,
2, 3, 4, 4, 3, 5, /* join */
6, 4, 5, 5, 7, 6,
6, 7, 0, 0, 7, 1, /* join */
}), TestSuite::Compare::Container);
CORRADE_VERIFY(mesh.hasAttribute(Trade::MeshAttribute::Position));
CORRADE_COMPARE(mesh.attributeFormat(Trade::MeshAttribute::Position), VertexFormat::Vector2);
Containers::StridedArrayView1D<const Vector2> positions = mesh.attribute<Vector2>(Trade::MeshAttribute::Position);
CORRADE_COMPARE_AS(positions, Containers::arrayView<Vector2>({
{-1.0f, 0.0f}, {-1.0f, 0.0f},
{+1.0f, 0.0f}, {+1.0f, 0.0f},
{+1.0f, 0.0f}, {+1.0f, 0.0f},
{-1.0f, 0.0f}, {-1.0f, 0.0f},
}), TestSuite::Compare::Container);
CORRADE_VERIFY(mesh.hasAttribute(Implementation::LineMeshAttributePreviousPosition));
CORRADE_COMPARE(mesh.attributeFormat(Implementation::LineMeshAttributePreviousPosition), VertexFormat::Vector2);
CORRADE_COMPARE_AS(mesh.attribute<Vector2>(Implementation::LineMeshAttributePreviousPosition), Containers::arrayView<Vector2>({
positions[4], positions[4],
positions[0], positions[0],
positions[0], positions[0],
positions[4], positions[4],
}), TestSuite::Compare::Container);
CORRADE_VERIFY(mesh.hasAttribute(Implementation::LineMeshAttributePreviousPosition));
CORRADE_COMPARE(mesh.attributeFormat(Implementation::LineMeshAttributeNextPosition), VertexFormat::Vector2);
CORRADE_COMPARE_AS(mesh.attribute<Vector2>(Implementation::LineMeshAttributeNextPosition), Containers::arrayView<Vector2>({
positions[2], positions[2],
positions[6], positions[6],
positions[6], positions[6],
positions[2], positions[2],
}), TestSuite::Compare::Container);
CORRADE_VERIFY(mesh.hasAttribute(Implementation::LineMeshAttributeAnnotation));
CORRADE_COMPARE(mesh.attributeFormat(Implementation::LineMeshAttributeAnnotation), VertexFormat::UnsignedInt);
CORRADE_COMPARE_AS((Containers::arrayCast<1, const Shaders::LineVertexAnnotations>(mesh.attribute(Implementation::LineMeshAttributeAnnotation))), Containers::arrayView<Shaders::LineVertexAnnotations>({
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Begin|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Up|
Shaders::LineVertexAnnotation::Join,
Shaders::LineVertexAnnotation::Join,
}), TestSuite::Compare::Container);
}
void GenerateLinesTest::notLines() {
CORRADE_SKIP_IF_NO_ASSERT();
Vector3 positions[3]{};
std::ostringstream out;
Error redirectError{&out};
generateLines(Trade::MeshData{MeshPrimitive::TriangleFan, {}, positions, {
Trade::MeshAttributeData{Trade::MeshAttribute::Position, Containers::stridedArrayView(positions)}
}});
CORRADE_COMPARE(out.str(), "Trade::MeshTools::generateLines(): expected a line primitive, got MeshPrimitive::TriangleFan\n");
}
void GenerateLinesTest::noAttributes() {
CORRADE_SKIP_IF_NO_ASSERT();
std::ostringstream out;
Error redirectError{&out};
generateLines(Trade::MeshData{MeshPrimitive::Lines, 12});
CORRADE_COMPARE(out.str(), "Trade::MeshTools::generateLines(): the mesh has no positions\n");
}
void GenerateLinesTest::noPositionAttribute() {
CORRADE_SKIP_IF_NO_ASSERT();
Vector3 colors[2]{};
std::ostringstream out;
Error redirectError{&out};
generateLines(Trade::MeshData{MeshPrimitive::Lines, {}, colors, {
Trade::MeshAttributeData{Trade::MeshAttribute::Color, Containers::stridedArrayView(colors)}
}});
CORRADE_COMPARE(out.str(), "Trade::MeshTools::generateLines(): the mesh has no positions\n");
}
}}}}
CORRADE_TEST_MAIN(Magnum::MeshTools::Test::GenerateLinesTest)