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// Geometric Tools, LLC
// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.0.0 (2010/01/01)
#include "RoughPlaneParticle2.h"
WM5_WINDOW_APPLICATION(RoughPlaneParticle2);
//#define SINGLE_STEP
//----------------------------------------------------------------------------
RoughPlaneParticle2::RoughPlaneParticle2 ()
:
WindowApplication2("SamplePhysics/RoughPlaneParticle2", 0, 0, 256, 256,
Float4(1.0f, 1.0f, 1.0f, 1.0f))
{
mIteration = 0;
mMaxIteration = 512;
mSize = GetWidth();
}
//----------------------------------------------------------------------------
bool RoughPlaneParticle2::OnInitialize ()
{
if (!WindowApplication2::OnInitialize())
{
return false;
}
// Set up the physics module.
mModule.Gravity = 10.0;
mModule.Mass1 = 10.0;
mModule.Mass2 = 20.0;
mModule.Friction1 = 1.0;
mModule.Friction2 = 1.0;
// Initialize the differential equations.
double time = 0.0;
double deltaTime = 1.0/60.0;
double x1 = 16.0;
double y1 = 116.0;
double x2 = 100.0;
double y2 = 200.0;
double xDot = 10.0;
double yDot = -10.0;
double thetaDot = 0.5;
mModule.Initialize(time, deltaTime, x1, y1, x2, y2, xDot, yDot, thetaDot);
// Use right-handed coordinates.
DoFlip(true);
// Drawing might extend outside the application window.
ClampToWindow() = true;
OnDisplay();
return true;
}
//----------------------------------------------------------------------------
void RoughPlaneParticle2::OnIdle ()
{
#ifndef SINGLE_STEP
if (mIteration < mMaxIteration)
{
mModule.Update();
OnDisplay();
++mIteration;
}
#endif
}
//----------------------------------------------------------------------------
void RoughPlaneParticle2::OnDisplay ()
{
ClearScreen();
ColorRGB black(0, 0, 0);
ColorRGB gray(128, 128, 128);
ColorRGB blue(0, 0, 255);
// Draw the rod.
double x1, y1, x2, y2;
mModule.Get(x1, y1, x2, y2);
int iX1 = (int)(x1 + 0.5);
int iY1 = (int)(y1 + 0.5);
int iX2 = (int)(x2 + 0.5);
int iY2 = (int)(y2 + 0.5);
DrawLine(iX1, iY1, iX2, iY2, gray);
// Draw the masses.
SetThickPixel(iX1, iY1, 2, black);
SetThickPixel(iX2, iY2, 2, black);
// Draw the center of mass.
int x = (int)(mModule.GetX() + 0.5);
int y = (int)(mModule.GetY() + 0.5);
SetThickPixel(x, y, 2, blue);
WindowApplication2::OnDisplay();
}
//----------------------------------------------------------------------------
bool RoughPlaneParticle2::OnKeyDown (unsigned char key, int x, int y)
{
if (WindowApplication2::OnKeyDown(key, x, y))
{
return true;
}
#ifdef SINGLE_STEP
switch (key)
{
case 'g':
case 'G':
if (mIteration < mMaxIteration)
{
mModule.Update();
OnDisplay();
++mIteration;
}
return true;
}
#endif
return false;
}
//----------------------------------------------------------------------------
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