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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 "ClodPolyline.h"
WM5_WINDOW_APPLICATION(ClodPolyline);
//----------------------------------------------------------------------------
ClodPolyline::ClodPolyline ()
:
WindowApplication2("SampleMathematics/ClodPolyline", 0, 0, 256, 256,
Float4(1.0f, 1.0f, 1.0f, 1.0f))
{
mPolyline = 0;
mSize = GetWidth();
}
//----------------------------------------------------------------------------
bool ClodPolyline::OnInitialize ()
{
if (!WindowApplication2::OnInitialize())
{
return false;
}
// Generate points on unit circle, then adjust the distances to center.
int numVertices = 16;
Vector3f* vertices = new1<Vector3f>(numVertices);
int i;
for (i = 0; i < numVertices; ++i)
{
float angle = Mathf::TWO_PI*i/numVertices;
vertices[i].X() = Mathf::Cos(angle);
vertices[i].Y() = Mathf::Sin(angle);
vertices[i].Z() = 0.0f;
float adjust = 1.0f + 0.25f*Mathf::SymmetricRandom();
vertices[i] *= adjust;
}
mPolyline = new0 Polyline3(numVertices, vertices, true);
OnDisplay();
return true;
}
//----------------------------------------------------------------------------
void ClodPolyline::OnTerminate ()
{
delete0(mPolyline);
WindowApplication2::OnTerminate();
}
//----------------------------------------------------------------------------
void ClodPolyline::OnDisplay ()
{
ClearScreen();
ColorRGB black(0, 0, 0);
const int numVertices = mPolyline->GetNumVertices();
const Vector3f* vertices = mPolyline->GetVertices();
const int numEdges = mPolyline->GetNumEdges();
const int* edges = mPolyline->GetEdges();
Vector3f vertex;
int i;
for (i = 0; i < numVertices; ++i)
{
vertex = vertices[i];
int x = (int)(0.25f*mSize*(vertex.X() + 2.0f));
int y = mSize - 1 - (int)(0.25f*mSize*(vertex.Y() + 2.0f));
SetThickPixel(x, y, 1, black);
}
for (i = 0; i < numEdges; ++i)
{
vertex = vertices[edges[2*i]];
int x0 = (int)(0.25f*mSize*(vertex.X() + 2.0f));
int y0 = mSize - 1 - (int)(0.25f*mSize*(vertex.Y() + 2.0f));
vertex = vertices[edges[2*i+1]];
int x1 = (int)(0.25*mSize*(vertex.X() + 2.0f));
int y1 = mSize - 1 - (int)(0.25f*mSize*(vertex.Y() + 2.0f));
DrawLine(x0, y0, x1, y1, black);
}
WindowApplication2::OnDisplay();
}
//----------------------------------------------------------------------------
bool ClodPolyline::OnKeyDown (unsigned char key, int x, int y)
{
if (WindowApplication2::OnKeyDown(key, x, y))
{
return true;
}
int levelOfDetail;
switch (key)
{
case '+': // increase level of detail
case '=':
levelOfDetail = mPolyline->GetLevelOfDetail();
if (levelOfDetail < mPolyline->GetMaxLevelOfDetail())
{
mPolyline->SetLevelOfDetail(levelOfDetail + 1);
OnDisplay();
}
return true;
case '-': // decrease level of detail
case '_':
levelOfDetail = mPolyline->GetLevelOfDetail();
if (levelOfDetail > mPolyline->GetMinLevelOfDetail())
{
mPolyline->SetLevelOfDetail(levelOfDetail - 1);
OnDisplay();
}
return true;
}
return false;
}
//----------------------------------------------------------------------------
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