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Add initial prototype.

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Rod Kay
2022-07-31 17:34:54 +10:00
commit 54a53b2ac0
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3-mid/physics/implement/box2d/contrib/testbed/tests/edge_test.cpp Normal file
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// MIT License
// Copyright (c) 2019 Erin Catto
// 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 "test.h"
#include "imgui/imgui.h"
class EdgeTest : public Test
{
public:
EdgeTest()
{
b2Vec2 vertices[10] =
{
{10.0f, -4.0f},
{10.0f, 0.0f},
{6.0f, 0.0f},
{4.0f, 2.0f},
{2.0f, 0.0f},
{-2.0f, 0.0f},
{-6.0f, 0.0f},
{-8.0f, -3.0f},
{-10.0f, 0.0f},
{-10.0f, -4.0f}
};
m_offset1.Set(0.0f, 8.0f);
m_offset2.Set(0.0f, 16.0f);
{
b2Vec2 v1 = vertices[0] + m_offset1;
b2Vec2 v2 = vertices[1] + m_offset1;
b2Vec2 v3 = vertices[2] + m_offset1;
b2Vec2 v4 = vertices[3] + m_offset1;
b2Vec2 v5 = vertices[4] + m_offset1;
b2Vec2 v6 = vertices[5] + m_offset1;
b2Vec2 v7 = vertices[6] + m_offset1;
b2Vec2 v8 = vertices[7] + m_offset1;
b2Vec2 v9 = vertices[8] + m_offset1;
b2Vec2 v10 = vertices[9] + m_offset1;
b2BodyDef bd;
b2Body* ground = m_world->CreateBody(&bd);
b2EdgeShape shape;
shape.SetOneSided(v10, v1, v2, v3);
ground->CreateFixture(&shape, 0.0f);
shape.SetOneSided(v1, v2, v3, v4);
ground->CreateFixture(&shape, 0.0f);
shape.SetOneSided(v2, v3, v4, v5);
ground->CreateFixture(&shape, 0.0f);
shape.SetOneSided(v3, v4, v5, v6);
ground->CreateFixture(&shape, 0.0f);
shape.SetOneSided(v4, v5, v6, v7);
ground->CreateFixture(&shape, 0.0f);
shape.SetOneSided(v5, v6, v7, v8);
ground->CreateFixture(&shape, 0.0f);
shape.SetOneSided(v6, v7, v8, v9);
ground->CreateFixture(&shape, 0.0f);
shape.SetOneSided(v7, v8, v9, v10);
ground->CreateFixture(&shape, 0.0f);
shape.SetOneSided(v8, v9, v10, v1);
ground->CreateFixture(&shape, 0.0f);
shape.SetOneSided(v9, v10, v1, v2);
ground->CreateFixture(&shape, 0.0f);
}
{
b2Vec2 v1 = vertices[0] + m_offset2;
b2Vec2 v2 = vertices[1] + m_offset2;
b2Vec2 v3 = vertices[2] + m_offset2;
b2Vec2 v4 = vertices[3] + m_offset2;
b2Vec2 v5 = vertices[4] + m_offset2;
b2Vec2 v6 = vertices[5] + m_offset2;
b2Vec2 v7 = vertices[6] + m_offset2;
b2Vec2 v8 = vertices[7] + m_offset2;
b2Vec2 v9 = vertices[8] + m_offset2;
b2Vec2 v10 = vertices[9] + m_offset2;
b2BodyDef bd;
b2Body* ground = m_world->CreateBody(&bd);
b2EdgeShape shape;
shape.SetTwoSided(v1, v2);
ground->CreateFixture(&shape, 0.0f);
shape.SetTwoSided(v2, v3);
ground->CreateFixture(&shape, 0.0f);
shape.SetTwoSided(v3, v4);
ground->CreateFixture(&shape, 0.0f);
shape.SetTwoSided(v4, v5);
ground->CreateFixture(&shape, 0.0f);
shape.SetTwoSided(v5, v6);
ground->CreateFixture(&shape, 0.0f);
shape.SetTwoSided(v6, v7);
ground->CreateFixture(&shape, 0.0f);
shape.SetTwoSided(v7, v8);
ground->CreateFixture(&shape, 0.0f);
shape.SetTwoSided(v8, v9);
ground->CreateFixture(&shape, 0.0f);
shape.SetTwoSided(v9, v10);
ground->CreateFixture(&shape, 0.0f);
shape.SetTwoSided(v10, v1);
ground->CreateFixture(&shape, 0.0f);
}
m_body1 = nullptr;
m_body2 = nullptr;
CreateBoxes();
m_boxes = true;
}
void CreateBoxes()
{
if (m_body1)
{
m_world->DestroyBody(m_body1);
m_body1 = nullptr;
}
if (m_body2)
{
m_world->DestroyBody(m_body2);
m_body2 = nullptr;
}
{
b2BodyDef bd;
bd.type = b2_dynamicBody;
bd.position = b2Vec2(8.0f, 2.6f) + m_offset1;
bd.allowSleep = false;
m_body1 = m_world->CreateBody(&bd);
b2PolygonShape shape;
shape.SetAsBox(0.5f, 1.0f);
m_body1->CreateFixture(&shape, 1.0f);
}
{
b2BodyDef bd;
bd.type = b2_dynamicBody;
bd.position = b2Vec2(8.0f, 2.6f) + m_offset2;
bd.allowSleep = false;
m_body2 = m_world->CreateBody(&bd);
b2PolygonShape shape;
shape.SetAsBox(0.5f, 1.0f);
m_body2->CreateFixture(&shape, 1.0f);
}
}
void CreateCircles()
{
if (m_body1)
{
m_world->DestroyBody(m_body1);
m_body1 = nullptr;
}
if (m_body2)
{
m_world->DestroyBody(m_body2);
m_body2 = nullptr;
}
{
b2BodyDef bd;
bd.type = b2_dynamicBody;
bd.position = b2Vec2(-0.5f, 0.6f) + m_offset1;
bd.allowSleep = false;
m_body1 = m_world->CreateBody(&bd);
b2CircleShape shape;
shape.m_radius = 0.5f;
m_body1->CreateFixture(&shape, 1.0f);
}
{
b2BodyDef bd;
bd.type = b2_dynamicBody;
bd.position = b2Vec2(-0.5f, 0.6f) + m_offset2;
bd.allowSleep = false;
m_body2 = m_world->CreateBody(&bd);
b2CircleShape shape;
shape.m_radius = 0.5f;
m_body2->CreateFixture(&shape, 1.0f);
}
}
void UpdateUI() override
{
ImGui::SetNextWindowPos(ImVec2(10.0f, 100.0f));
ImGui::SetNextWindowSize(ImVec2(200.0f, 100.0f));
ImGui::Begin("Custom Controls", nullptr, ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoResize);
if (ImGui::RadioButton("Boxes", m_boxes == true))
{
CreateBoxes();
m_boxes = true;
}
if (ImGui::RadioButton("Circles", m_boxes == false))
{
CreateCircles();
m_boxes = false;
}
ImGui::End();
}
void Step(Settings& settings) override
{
if (glfwGetKey(g_mainWindow, GLFW_KEY_A) == GLFW_PRESS)
{
m_body1->ApplyForceToCenter(b2Vec2(-10.0f, 0.0f), true);
m_body2->ApplyForceToCenter(b2Vec2(-10.0f, 0.0f), true);
}
if (glfwGetKey(g_mainWindow, GLFW_KEY_D) == GLFW_PRESS)
{
m_body1->ApplyForceToCenter(b2Vec2(10.0f, 0.0f), true);
m_body2->ApplyForceToCenter(b2Vec2(10.0f, 0.0f), true);
}
Test::Step(settings);
}
static Test* Create()
{
return new EdgeTest;
}
b2Vec2 m_offset1, m_offset2;
b2Body* m_body1;
b2Body* m_body2;
bool m_boxes;
};
static int testIndex = RegisterTest("Geometry", "Edge Test", EdgeTest::Create);