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thorvg/test/testPaint.cpp
Hermet Park 2eb2b83bb0 api: revise the clip() apis. 
- Paint explicity allows a shape as a clipper
- Added clipper getter apis

API Updates
 + Shape* Paint::clip()
 * Result Paint::clip(Paint* clipper) -> Result Paint::clip(Shape* clipper)

CAPI Updates
 + Tvg_Paint* tvg_paint_get_clip(const Tvg_Paint* paint)
 * Tvg_Result tvg_paint_clip(Tvg_Paint* paint, Tvg_Paint* clipper)
   -> Tvg_Result tvg_paint_set_clip(Tvg_Paint* paint, Tvg_Paint* clipper);

Please note that clipper type can be changed again to tvg::Path
in the upcoming update.
2025-05-29 14:02:32 +09:00

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/*
* Copyright (c) 2021 - 2025 the ThorVG project. All rights reserved.
* 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 <thorvg.h>
#include "config.h"
#include "catch.hpp"
using namespace tvg;
using namespace std;
TEST_CASE("Custom Transformation", "[tvgPaint]")
{
auto shape = unique_ptr<Shape>(Shape::gen());
REQUIRE(shape);
//Verify default transform
Matrix m1 = shape->transform();
REQUIRE(m1.e11 == Approx(1.0f).margin(0.000001));
REQUIRE(m1.e12 == Approx(0).margin(0.000001));
REQUIRE(m1.e13 == Approx(0).margin(0.000001));
REQUIRE(m1.e21 == Approx(0).margin(0.000001));
REQUIRE(m1.e22 == Approx(1.0f).margin(0.000001));
REQUIRE(m1.e23 == Approx(0).margin(0.000001));
REQUIRE(m1.e31 == Approx(0).margin(0.000001));
REQUIRE(m1.e32 == Approx(0).margin(0.000001));
REQUIRE(m1.e33 == Approx(1.0f).margin(0.000001));
//Custom transform
auto m2 = Matrix{1.0f, 2.0f, 3.0f, 4.0f, 0.0f, -4.0f, -3.0f, -2.0f, -1.0f};
REQUIRE(shape->transform(m2) == Result::Success);
auto m3 = shape->transform();
REQUIRE(m2.e11 == Approx(m3.e11).margin(0.000001));
REQUIRE(m2.e12 == Approx(m3.e12).margin(0.000001));
REQUIRE(m2.e13 == Approx(m3.e13).margin(0.000001));
REQUIRE(m2.e21 == Approx(m3.e21).margin(0.000001));
REQUIRE(m2.e22 == Approx(m3.e22).margin(0.000001));
REQUIRE(m2.e23 == Approx(m3.e23).margin(0.000001));
REQUIRE(m2.e31 == Approx(m3.e31).margin(0.000001));
REQUIRE(m2.e32 == Approx(m3.e32).margin(0.000001));
REQUIRE(m2.e33 == Approx(m3.e33).margin(0.000001));
//It's not allowed if the custom transform is applied.
REQUIRE(shape->translate(155.0f, -155.0f) == Result::InsufficientCondition);
REQUIRE(shape->scale(4.7f) == Result::InsufficientCondition);
REQUIRE(shape->rotate(45.0f) == Result::InsufficientCondition);
//Verify Transform is not modified
auto m4 = shape->transform();
REQUIRE(m2.e11 == Approx(m4.e11).margin(0.000001));
REQUIRE(m2.e12 == Approx(m4.e12).margin(0.000001));
REQUIRE(m2.e13 == Approx(m4.e13).margin(0.000001));
REQUIRE(m2.e21 == Approx(m4.e21).margin(0.000001));
REQUIRE(m2.e22 == Approx(m4.e22).margin(0.000001));
REQUIRE(m2.e23 == Approx(m4.e23).margin(0.000001));
REQUIRE(m2.e31 == Approx(m4.e31).margin(0.000001));
REQUIRE(m2.e32 == Approx(m4.e32).margin(0.000001));
REQUIRE(m2.e33 == Approx(m4.e33).margin(0.000001));
}
TEST_CASE("Basic Transformation", "[tvgPaint]")
{
auto shape = unique_ptr<Shape>(Shape::gen());
REQUIRE(shape);
REQUIRE(shape->translate(155.0f, -155.0f) == Result::Success);
REQUIRE(shape->rotate(45.0f) == Result::Success);
REQUIRE(shape->scale(4.7f) == Result::Success);
auto m = shape->transform();
REQUIRE(m.e11 == Approx(3.323402f).margin(0.000001));
REQUIRE(m.e12 == Approx(-3.323401f).margin(0.000001));
REQUIRE(m.e13 == Approx(155.0f).margin(0.000001));
REQUIRE(m.e21 == Approx(3.323401f).margin(0.000001));
REQUIRE(m.e22 == Approx(3.323402f).margin(0.000001));
REQUIRE(m.e23 == Approx(-155.0f).margin(0.000001));
REQUIRE(m.e31 == Approx(0).margin(0.000001));
REQUIRE(m.e32 == Approx(0).margin(0.000001));
REQUIRE(m.e33 == Approx(1).margin(0.000001));
}
TEST_CASE("Opacity", "[tvgPaint]")
{
auto shape = unique_ptr<Shape>(Shape::gen());
REQUIRE(shape);
REQUIRE(shape->opacity() == 255);
REQUIRE(shape->opacity(155) == Result::Success);
REQUIRE(shape->opacity() == 155);
REQUIRE(shape->opacity(-1) == Result::Success);
REQUIRE(shape->opacity() == 255);
REQUIRE(shape->opacity(0) == Result::Success);
REQUIRE(shape->opacity() == 0);
}
TEST_CASE("Bounding Box", "[tvgPaint]")
{
Initializer::init(0);
auto canvas = unique_ptr<SwCanvas>(SwCanvas::gen());
uint32_t buffer[100*100];
canvas->target(buffer, 100, 100, 100, ColorSpace::ABGR8888);
auto shape = Shape::gen();
canvas->push(shape);
canvas->sync();
//Negative
float x = 0, y = 0, w = 0, h = 0;
REQUIRE(shape->bounds(&x, &y, &w, &h) == Result::InsufficientCondition);
//Case 1
REQUIRE(shape->appendRect(0.0f, 10.0f, 20.0f, 100.0f, 50.0f, 50.0f) == Result::Success);
REQUIRE(shape->translate(100.0f, 111.0f) == Result::Success);
REQUIRE(shape->bounds(&x, &y, &w, &h) == Result::Success);
REQUIRE(x == 100.0f);
REQUIRE(y == 121.0f);
REQUIRE(w == 20.0f);
REQUIRE(h == 100.0f);
REQUIRE(canvas->update(shape) == Result::Success);
Point pts[4];
REQUIRE(shape->bounds(pts) == Result::Success);
REQUIRE(pts[0].x == 100.0f);
REQUIRE(pts[3].x == 100.0f);
REQUIRE(pts[0].y == 121.0f);
REQUIRE(pts[1].y == 121.0f);
REQUIRE(pts[1].x == 120.0f);
REQUIRE(pts[2].x == 120.0f);
REQUIRE(pts[2].y == 221.0f);
REQUIRE(pts[3].y == 221.0f);
//Case 2
REQUIRE(shape->reset() == Result::Success);
REQUIRE(shape->moveTo(0.0f, 10.0f) == Result::Success);
REQUIRE(shape->lineTo(20.0f, 210.0f) == Result::Success);
auto identity = Matrix{1.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f};
REQUIRE(shape->transform(identity) == Result::Success);
REQUIRE(shape->bounds(&x, &y, &w, &h) == Result::Success);
REQUIRE(x == 0.0f);
REQUIRE(y == 10.0f);
REQUIRE(w == 20.0f);
REQUIRE(h == 200.0f);
REQUIRE(canvas->update(shape) == Result::Success);
REQUIRE(shape->bounds(pts) == Result::Success);
REQUIRE(pts[0].x == 0.0f);
REQUIRE(pts[3].x == 0.0f);
REQUIRE(pts[0].y == 10.0f);
REQUIRE(pts[1].y == 10.0f);
REQUIRE(pts[1].x == 20.0f);
REQUIRE(pts[2].x == 20.0f);
REQUIRE(pts[2].y == 210.0f);
REQUIRE(pts[3].y == 210.0f);
Initializer::term();
}
TEST_CASE("Duplication", "[tvgPaint]")
{
auto shape = unique_ptr<Shape>(Shape::gen());
REQUIRE(shape);
//Setup paint properties
REQUIRE(shape->opacity(0) == Result::Success);
REQUIRE(shape->translate(200.0f, 100.0f) == Result::Success);
REQUIRE(shape->scale(2.2f) == Result::Success);
REQUIRE(shape->rotate(90.0f) == Result::Success);
auto comp = Shape::gen();
REQUIRE(comp);
REQUIRE(shape->clip(comp) == Result::Success);
//Duplication
auto dup = unique_ptr<Paint>(shape->duplicate());
REQUIRE(dup);
//Compare properties
REQUIRE(dup->opacity() == 0);
auto m = shape->transform();
REQUIRE(m.e11 == Approx(0.0f).margin(0.000001));
REQUIRE(m.e12 == Approx(-2.2f).margin(0.000001));
REQUIRE(m.e13 == Approx(200.0f).margin(0.000001));
REQUIRE(m.e21 == Approx(2.2f).margin(0.000001));
REQUIRE(m.e22 == Approx(0.0f).margin(0.000001));
REQUIRE(m.e23 == Approx(100.0f).margin(0.000001));
REQUIRE(m.e31 == Approx(0.0f).margin(0.000001));
REQUIRE(m.e32 == Approx(0.0f).margin(0.000001));
REQUIRE(m.e33 == Approx(1.0f).margin(0.000001));
}
TEST_CASE("Composition", "[tvgPaint]")
{
auto shape = unique_ptr<Shape>(Shape::gen());
REQUIRE(shape);
//Negative
REQUIRE(shape->mask(nullptr) == MaskMethod::None);
//Clipping
auto comp = Shape::gen();
REQUIRE(shape->clip() == nullptr);
REQUIRE(shape->clip(comp) == Result::Success);
REQUIRE(shape->clip() == comp);
//AlphaMask
comp = Shape::gen();
REQUIRE(shape->mask(comp, MaskMethod::Alpha) == Result::Success);
const Paint* comp2 = nullptr;
REQUIRE(shape->mask(&comp2) == MaskMethod::Alpha);
REQUIRE(comp == comp2);
//InvAlphaMask
comp = Shape::gen();
REQUIRE(shape->mask(comp, MaskMethod::InvAlpha) == Result::Success);
REQUIRE(shape->mask(&comp2) == MaskMethod::InvAlpha);
REQUIRE(comp == comp2);
//LumaMask
comp = Shape::gen();
REQUIRE(shape->mask(comp, MaskMethod::Luma) == Result::Success);
REQUIRE(shape->mask(&comp2) == MaskMethod::Luma);
REQUIRE(comp == comp2);
//InvLumaMask
comp = Shape::gen();
REQUIRE(shape->mask(comp, MaskMethod::InvLuma) == Result::Success);
REQUIRE(shape->mask(&comp2) == MaskMethod::InvLuma);
REQUIRE(comp == comp2);
}
TEST_CASE("Blending", "[tvgPaint]")
{
auto shape = unique_ptr<Shape>(Shape::gen());
REQUIRE(shape);
//Add
REQUIRE(shape->blend(BlendMethod::Add) == Result::Success);
//Screen
REQUIRE(shape->blend(BlendMethod::Screen) == Result::Success);
//Multiply
REQUIRE(shape->blend(BlendMethod::Multiply) == Result::Success);
//Overlay
REQUIRE(shape->blend(BlendMethod::Overlay) == Result::Success);
//Difference
REQUIRE(shape->blend(BlendMethod::Difference) == Result::Success);
//Exclusion
REQUIRE(shape->blend(BlendMethod::Exclusion) == Result::Success);
//Darken
REQUIRE(shape->blend(BlendMethod::Darken) == Result::Success);
//Lighten
REQUIRE(shape->blend(BlendMethod::Lighten) == Result::Success);
//ColorDodge
REQUIRE(shape->blend(BlendMethod::ColorDodge) == Result::Success);
//ColorBurn
REQUIRE(shape->blend(BlendMethod::ColorBurn) == Result::Success);
//HardLight
REQUIRE(shape->blend(BlendMethod::HardLight) == Result::Success);
//SoftLight
REQUIRE(shape->blend(BlendMethod::SoftLight) == Result::Success);
}
TEST_CASE("Refernce Count", "[tvgPaint]")
{
auto shape = Shape::gen();
REQUIRE(shape->refCnt() == 0);
REQUIRE(shape->unref(false) == 0);
REQUIRE(shape->ref() == 1);
REQUIRE(shape->ref() == 2);
REQUIRE(shape->ref() == 3);
REQUIRE(shape->unref() == 2);
REQUIRE(shape->unref() == 1);
REQUIRE(shape->unref() == 0);
Initializer::init(0);
auto canvas = unique_ptr<SwCanvas>(SwCanvas::gen());
shape = Shape::gen();
REQUIRE(shape->ref() == 1);
canvas->push(shape);
REQUIRE(shape->refCnt() == 2);
REQUIRE(shape->unref() == 1);
shape = Shape::gen();
REQUIRE(shape->ref() == 1);
auto scene = Scene::gen();
scene->push(shape);
canvas->push(scene);
REQUIRE(shape->refCnt() == 2);
REQUIRE(shape->unref() == 1);
shape = Shape::gen();
REQUIRE(shape->ref() == 1);
scene = Scene::gen();
scene->push(shape);
scene->remove();
canvas->push(scene);
REQUIRE(shape->unref() == 0);
Initializer::term();
}
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