155 lines
3.6 KiB
C++
155 lines
3.6 KiB
C++
/*
|
|
* Copyright (c) 2016-2019 Irlan Robson https://irlanrobson.github.io
|
|
*
|
|
* This software is provided 'as-is', without any express or implied
|
|
* warranty. In no event will the authors be held liable for any damages
|
|
* arising from the use of this software.
|
|
* Permission is granted to anyone to use this software for any purpose,
|
|
* including commercial applications, and to alter it and redistribute it
|
|
* freely, subject to the following restrictions:
|
|
* 1. The origin of this software must not be misrepresented; you must not
|
|
* claim that you wrote the original software. If you use this software
|
|
* in a product, an acknowledgment in the product documentation would be
|
|
* appreciated but is not required.
|
|
* 2. Altered source versions must be plainly marked as such, and must not be
|
|
* misrepresented as being the original software.
|
|
* 3. This notice may not be removed or altered from any source distribution.
|
|
*/
|
|
|
|
#ifndef SELF_COLLISION_H
|
|
#define SELF_COLLISION_H
|
|
|
|
class SelfCollision : public Test
|
|
{
|
|
public:
|
|
SelfCollision() : m_rectangleGarment(5.0f, 5.0f)
|
|
{
|
|
// Generate 2D mesh
|
|
m_rectangleGarmentMesh.Set(&m_rectangleGarment, 1.0f);
|
|
|
|
// Create 3D mesh
|
|
m_rectangleClothMesh.Set(&m_rectangleGarmentMesh);
|
|
|
|
// Rotate and translate the mesh
|
|
b3Mat33 rotation = b3Mat33RotationX(0.5f * B3_PI);
|
|
for (u32 i = 0; i < m_rectangleClothMesh.vertexCount; ++i)
|
|
{
|
|
m_rectangleClothMesh.vertices[i] = rotation * m_rectangleClothMesh.vertices[i];
|
|
m_rectangleClothMesh.vertices[i].y += 5.0f;
|
|
}
|
|
|
|
// Create cloth
|
|
b3ClothDef def;
|
|
def.mesh = &m_rectangleClothMesh;
|
|
def.density = 1.0f;
|
|
def.structural = 100000.0f;
|
|
|
|
m_cloth = new b3Cloth(def);
|
|
|
|
m_cloth->SetGravity(b3Vec3(0.0f, -9.8f, 0.0f));
|
|
m_cloth->SetWorld(&m_world);
|
|
|
|
for (b3Particle* p = m_cloth->GetParticleList().m_head; p; p = p->GetNext())
|
|
{
|
|
p->SetRadius(0.2f);
|
|
p->SetFriction(0.2f);
|
|
}
|
|
|
|
{
|
|
b3BodyDef bd;
|
|
bd.type = e_staticBody;
|
|
|
|
b3Body* b = m_world.CreateBody(bd);
|
|
|
|
b3CapsuleShape capsuleShape;
|
|
capsuleShape.m_centers[0].Set(0.0f, 0.0f, -5.0f);
|
|
capsuleShape.m_centers[1].Set(0.0f, 0.0f, 5.0f);
|
|
capsuleShape.m_radius = 1.0f;;
|
|
|
|
b3ShapeDef sd;
|
|
sd.shape = &capsuleShape;
|
|
sd.friction = 1.0f;
|
|
|
|
b->CreateShape(sd);
|
|
}
|
|
|
|
m_clothDragger = new b3ClothDragger(&m_ray, m_cloth);
|
|
}
|
|
|
|
~SelfCollision()
|
|
{
|
|
delete m_cloth;
|
|
delete m_clothDragger;
|
|
}
|
|
|
|
void Step()
|
|
{
|
|
Test::Step();
|
|
|
|
m_cloth->Step(g_testSettings->inv_hertz);
|
|
|
|
m_cloth->Draw();
|
|
|
|
if (m_clothDragger->IsDragging())
|
|
{
|
|
b3Vec3 pA = m_clothDragger->GetPointA();
|
|
b3Vec3 pB = m_clothDragger->GetPointB();
|
|
|
|
g_draw->DrawPoint(pA, 2.0f, b3Color_green);
|
|
|
|
g_draw->DrawPoint(pB, 2.0f, b3Color_green);
|
|
|
|
g_draw->DrawSegment(pA, pB, b3Color_white);
|
|
}
|
|
|
|
extern u32 b3_clothSolverIterations;
|
|
g_draw->DrawString(b3Color_white, "Iterations = %d", b3_clothSolverIterations);
|
|
|
|
float32 E = m_cloth->GetEnergy();
|
|
g_draw->DrawString(b3Color_white, "E = %f", E);
|
|
}
|
|
|
|
void MouseMove(const b3Ray3& pw)
|
|
{
|
|
Test::MouseMove(pw);
|
|
|
|
if (m_clothDragger->IsDragging() == true)
|
|
{
|
|
m_clothDragger->Drag();
|
|
}
|
|
}
|
|
|
|
void MouseLeftDown(const b3Ray3& pw)
|
|
{
|
|
Test::MouseLeftDown(pw);
|
|
|
|
if (m_clothDragger->IsDragging() == false)
|
|
{
|
|
m_clothDragger->StartDragging();
|
|
}
|
|
}
|
|
|
|
void MouseLeftUp(const b3Ray3& pw)
|
|
{
|
|
Test::MouseLeftUp(pw);
|
|
|
|
if (m_clothDragger->IsDragging() == true)
|
|
{
|
|
m_clothDragger->StopDragging();
|
|
}
|
|
}
|
|
|
|
static Test* Create()
|
|
{
|
|
return new SelfCollision();
|
|
}
|
|
|
|
b3RectangleGarment m_rectangleGarment;
|
|
b3GarmentMesh m_rectangleGarmentMesh;
|
|
b3GarmentClothMesh m_rectangleClothMesh;
|
|
|
|
b3Cloth* m_cloth;
|
|
b3ClothDragger* m_clothDragger;
|
|
};
|
|
|
|
#endif |