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/*
* Copyright 2010 Inalogic® Inc.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License, as
* published by the Free Software Foundation; either version 2.1 or 3.0
* of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the applicable version of the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of both the GNU Lesser General Public
* License along with this program. If not, see <http://www.gnu.org/licenses/>
*
* Authored by: Jay Taoko <jaytaoko@inalogic.com>
*
*/
#include "Nux.h"
#include "Histogram.h"
namespace nux
{
Histogram::Histogram (NUX_FILE_LINE_DECL)
: View (NUX_FILE_LINE_PARAM)
, m_minX (0)
, m_minY (0)
, m_maxX (100)
, m_maxY (20)
{
SetMinimumSize (100, 100);
//SetMinMaxSize(100, 100);
SetBaseSize (200, 100);
for (int i = 0; i < m_maxX - m_minX; i++)
m_HistogramData.push_back (/*5*pow(i * Pi/(300.0f)/1.3f, 0.9f)*/ + cos (i * Const::Pi / (100.0f) / 1.7f) * (15 + RandomUInt (3 + 7 * i / 100.0f) ) );
m_DrawFunctionShader = new GLSh_DrawFunction();
NString Path = NUX_FINDRESOURCELOCATION (TEXT ("Data/UITextures/FunctionGraphBackground.tga"));
BaseTexture* BackgroundTexture = GetGraphicsDisplay()->GetGpuDevice()->CreateSystemCapableTexture ();
BackgroundTexture->Update (Path.GetTCharPtr());
TexCoordXForm texxform;
texxform.SetTexCoordType (TexCoordXForm::OFFSET_COORD);
texxform.SetWrap (TEXWRAP_REPEAT, TEXWRAP_REPEAT);
m_BackgroundLayer = new TextureLayer (BackgroundTexture->GetDeviceTexture(), texxform, color::White);
BackgroundTexture->UnReference ();
}
Histogram::~Histogram()
{
NUX_SAFE_DELETE (m_DrawFunctionShader);
NUX_SAFE_DELETE (m_BackgroundLayer);
}
long Histogram::ProcessEvent (IEvent &ievent, long TraverseInfo, long ProcessEventInfo)
{
return TraverseInfo;
}
void Histogram::Draw (GraphicsEngine &GfxContext, bool force_draw)
{
Geometry base = GetGeometry();
GetPainter().PaintBackground (GfxContext, base);
GetPainter().Paint2DQuadWireframe (GfxContext, base, Color (COLOR_BACKGROUND_SECONDARY) );
int W = GetBaseWidth() - 2;
int H = GetBaseHeight() - 2;
int X = GetBaseX() + 1;
int Y = GetBaseY() + 1;
float dX = float (m_maxX - m_minX) / W;
float x0, y0;
x0 = m_minX;
y0 = m_HistogramData[0];
base.OffsetPosition (1, 1);
base.OffsetSize (-2, -2);
GfxContext.PushClippingRectangle (base);
if (Texture.IsNull() || (Texture->GetWidth() != (t_s32) m_HistogramData.size() ) )
Texture = GetGraphicsDisplay()->GetGpuDevice()->CreateSystemCapableDeviceTexture ( (t_s32) m_HistogramData.size(), 1, 0, BITFMT_A8);
float tex_dx = (m_maxX - m_minX) / Texture->GetWidth();
SURFACE_LOCKED_RECT lockrect;
Texture->LockRect (0, &lockrect, 0);
BYTE *dest = (BYTE *) lockrect.pBits;
for (t_s32 i = 0; i < Texture->GetWidth(); i++)
{
float y = 0;
if (m_HistogramData.size() == 0)
y = 0;
else
y = m_HistogramData[Clamp<int> (int (m_minX + i*tex_dx), 0, (t_s32) m_HistogramData.size()-1) ];
y = float (y - m_minY) / float (m_maxY - m_minY);
for (t_s32 j = 0; j < Texture->GetHeight(); j++)
{
dest[1*i + 0 + j *lockrect.Pitch] = 255 * Clamp<float> (y, 0.0f, 1.0f);
// dest[4*i + 1 + j * lockrect.Pitch] = 255 * Clamp<float>(y, 0.0f, 1.0f);
// dest[4*i + 2 + j * lockrect.Pitch] = 255 * Clamp<float>(y, 0.0f, 1.0f);
// dest[4*i + 3 + j * lockrect.Pitch] = 255 * Clamp<float>(y, 0.0f, 1.0f);
}
}
Texture->UnlockRect (0);
m_BackgroundLayer->SetGeometry (base);
m_BackgroundLayer->Renderlayer (GfxContext);
GfxContext.GetRenderStates().SetBlend (TRUE, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
m_DrawFunctionShader->SetTextureFunction (Texture);
m_DrawFunctionShader->SetBackgroundColor (Color(0.1f, 0.1f, 0.1f, 0.6f));
m_DrawFunctionShader->Render (X, Y, 0, W, H, GfxContext.GetWindowWidth(), GfxContext.GetWindowHeight() );
GfxContext.GetRenderStates().EnableLineSmooth (TRUE, 1, GL_FASTEST); //You need this blending formula to get anti-aliased lines
for (int i = 1; i < GetBaseWidth(); i++)
{
float x1, y1;
x1 = x0 + dX;
if (m_HistogramData.size() == 0)
y1 = 0;
else
y1 = m_HistogramData[Clamp<int> (int (x1), 0, (t_s32) m_HistogramData.size()-1) ];
int X0, Y0, X1, Y1;
X0 = X + W * (x0 - m_minX) / (m_maxX - m_minX);
Y0 = Y + H * ( 1 - (y0 - m_minY) / (m_maxY - m_minY) );
X1 = X + W * (x1 - m_minX) / (m_maxX - m_minX);
Y1 = Y + H * ( 1 - (y1 - m_minY) / (m_maxY - m_minY) );
GetPainter().Draw2DLine (GfxContext, X0, Y0, X1, Y1, Color (0xFFFFFFFF) );
x0 = x1;
y0 = y1;
}
GfxContext.GetRenderStates().EnableLineSmooth (FALSE);
GfxContext.GetRenderStates().SetBlend (GL_FALSE);
GfxContext.PopClippingRectangle();
}
void Histogram::DrawContent (GraphicsEngine &GfxContext, bool force_draw)
{
}
void Histogram::PostDraw (GraphicsEngine &GfxContext, bool force_draw)
{
}
void Histogram::setXAxisBounds (int minX, int maxX)
{
//m_minX = minX;
//m_maxX = maxX;
//Texture = GetGraphicsDisplay()->GetGpuDevice()->CreateSystemCapableDeviceTexture(m_maxX - m_minX, 4, 0, BITFMT_R8G8B8A8);
QueueDraw();
}
void Histogram::setYAxisBounds (int minY, int maxY)
{
m_minY = minY;
m_maxY = maxY;
QueueDraw();
}
void Histogram::SetHistogram (std::vector<int>& HistogramData)
{
if (HistogramData.size() == 0)
return;
m_HistogramData = HistogramData;
m_minX = 0;
m_maxX = (t_s32) m_HistogramData.size();
QueueDraw();
}
}
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