153 lines
3.5 KiB
C++
153 lines
3.5 KiB
C++
/*
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* Copyright (c) 2016-2019 Irlan Robson https://irlanrobson.github.io
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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*/
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#ifndef PINNED_CLOTH_H
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#define PINNED_CLOTH_H
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class PinnedCloth : public Test
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{
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public:
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PinnedCloth() : m_rectangleGarment(5.0f, 5.0f)
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{
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// Generate 2D mesh
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m_rectangleGarmentMesh.Set(&m_rectangleGarment, 1.0f);
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// Create 3D mesh
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m_rectangleClothMesh.Set(&m_rectangleGarmentMesh);
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// Rotate the mesh
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b3Mat33 rotation = b3Mat33RotationX(0.5f * B3_PI);
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for (u32 i = 0; i < m_rectangleClothMesh.vertexCount; ++i)
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{
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m_rectangleClothMesh.vertices[i] = rotation * m_rectangleClothMesh.vertices[i];
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}
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// Create cloth
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b3ClothDef def;
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def.mesh = &m_rectangleClothMesh;
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def.density = 0.2f;
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def.structural = 100000.0f;
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def.damping = 0.0f;
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m_cloth = new b3Cloth(def);
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m_cloth->SetGravity(b3Vec3(0.0f, -9.8f, 0.0f));
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m_cloth->SetWorld(&m_world);
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// Freeze some particles
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b3AABB3 aabb1;
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aabb1.m_lower.Set(-5.0f, -1.0f, -6.0f);
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aabb1.m_upper.Set(5.0f, 1.0f, -4.0f);
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b3AABB3 aabb2;
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aabb2.m_lower.Set(-5.0f, -1.0f, 4.0f);
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aabb2.m_upper.Set(5.0f, 1.0f, 6.0f);
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for (b3Particle* p = m_cloth->GetParticleList().m_head; p; p = p->GetNext())
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{
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if (aabb1.Contains(p->GetPosition()))
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{
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p->SetType(e_staticParticle);
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}
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if (aabb2.Contains(p->GetPosition()))
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{
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p->SetType(e_staticParticle);
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}
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}
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m_clothDragger = new b3ClothDragger(&m_ray, m_cloth);
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}
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~PinnedCloth()
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{
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delete m_clothDragger;
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delete m_cloth;
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}
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void Step()
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{
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Test::Step();
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m_cloth->Step(g_testSettings->inv_hertz);
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m_cloth->Draw();
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if (m_clothDragger->IsDragging())
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{
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b3Vec3 pA = m_clothDragger->GetPointA();
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b3Vec3 pB = m_clothDragger->GetPointB();
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g_draw->DrawPoint(pA, 2.0f, b3Color_green);
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g_draw->DrawPoint(pB, 2.0f, b3Color_green);
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g_draw->DrawSegment(pA, pB, b3Color_white);
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}
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extern u32 b3_clothSolverIterations;
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g_draw->DrawString(b3Color_white, "Iterations = %d", b3_clothSolverIterations);
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float32 E = m_cloth->GetEnergy();
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g_draw->DrawString(b3Color_white, "E = %f", E);
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}
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void MouseMove(const b3Ray3& pw)
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{
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Test::MouseMove(pw);
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if (m_clothDragger->IsDragging() == true)
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{
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m_clothDragger->Drag();
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}
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}
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void MouseLeftDown(const b3Ray3& pw)
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{
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Test::MouseLeftDown(pw);
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if (m_clothDragger->IsDragging() == false)
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{
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m_clothDragger->StartDragging();
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}
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}
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void MouseLeftUp(const b3Ray3& pw)
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{
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Test::MouseLeftUp(pw);
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if (m_clothDragger->IsDragging() == true)
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{
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m_clothDragger->StopDragging();
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}
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}
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static Test* Create()
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{
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return new PinnedCloth();
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}
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b3RectangleGarment m_rectangleGarment;
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b3GarmentMesh m_rectangleGarmentMesh;
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b3GarmentClothMesh m_rectangleClothMesh;
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b3Cloth* m_cloth;
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b3ClothDragger* m_clothDragger;
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};
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#endif |