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TextRenderTest.cpp
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TextRenderTest.cpp
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/*
* File: TextRenderTest.cpp
* Author: sean
*
* Created on 02-Oct-2014, 15:36:53
*/
#include <stdlib.h>
#include <iostream>
#include <echo/Graphics/Renderer.h>
#include <echo/Graphics/Scene.h>
#include <echo/Graphics/SceneRenderable.h>
#include <echo/Graphics/TextEntity.h>
#include <echo/Graphics/Camera.h>
#include <echo/Graphics/Viewport.h>
#include <echo/Graphics/MultiRenderer.h>
#include <echo/Kernel/Kernel.h>
#include <echo/Resource/MeshManager.h>
#include <echo/Application.h>
#include <echo/FileSystem/FileSystem.h>
#include <echo/Graphics/Mesh.h>
#include <echo/Resource/TextureManager.h>
#include <echo/Resource/MaterialManager.h>
#include <echo/Resource/FontManager.h>
#include <boost/bind.hpp>
#include <echo/PlatformStub.h>
#include <echo/Chrono/CountDownTimer.h>
using namespace Echo;
class Spinner : public Task
{
public:
typedef boost::function<void(f32,f32)> SetFunction;
Spinner(SetFunction setFunction, f32 magnitudeMultiplier, f32 speedMultiplier, f32 startAngle) :
mSetFunction(setFunction),
mAngle(startAngle),
mSpeedMultiplier(speedMultiplier),
mMagnitudeMultiplier(magnitudeMultiplier)
{
}
void Update(Seconds lastFrameTime)
{
mAngle += static_cast<f32>(lastFrameTime.count()) * mSpeedMultiplier;
mSetFunction(Maths::Sin(mAngle,false) * mMagnitudeMultiplier,Maths::Cos(mAngle,false) * mMagnitudeMultiplier);
}
SetFunction mSetFunction;
f32 mAngle;
f32 mSpeedMultiplier;
f32 mMagnitudeMultiplier;
};
class TextRenderTest : public Application
{
public:
TextRenderTest() : mTimeout(Seconds(30.0),boost::bind(&TaskManager::RemoveAllTasks,this),"RemoveAllTasks")
{
GetConfiguration().Set<u32>("resolution.x",800);
GetConfiguration().Set<u32>("resolution.y",600);
Initialise("TextRenderTest");
mScene.SetUseOnlyZForDistanceCalculations(true);
//Load resource lists
GetFontManager()->LoadList(GetFileSystem()->Open("data/fonts.list"));
//The second camera will be moving around the Z axis at a distance and tacking another stationary node.
shared_ptr<Camera> camera = mScene.CreateCamera();
camera->SetAutoTracking(true,make_shared<Node>(),Vector3(0,0,0));
camera->SetPosition(0,0,10);
//This spinner moves the second camera.
mSpinner = shared_ptr<Spinner>(new Spinner(boost::bind(&Camera::SetPosition,camera,_1,_2,7),3.f,1.0f,0.f));
AddTask(mSpinner.get());
GetRenderer()->CreateRenderer(make_shared<Viewport>(0,0,1,1),camera);
AddTask(GetRenderer().get());
//The demo can be closed using the window or it will timeout automatically.
AddTask(mTimeout);
mTextEntity = shared_ptr< TextEntity >(new TextEntity("Hello World three four five areallylongwordthatshouldbescaled", GetFontManager()->GetResource("TestFont")));
mTextEntity->SetUseMaxWidth(true);
mTextEntity->SetMaxWidth(750);
mTextEntity->UpdateMesh();
Vector3 scale = mTextEntity->GetTextDimensions();
scale.y = 5.f / scale.y;
scale.x = scale.y;
scale.z = 1.0f;
mTextEntity->SetScale(scale);
mScene.AddRenderable(mTextEntity);
//Non-fixed width text, using a text scale rather than node scale.
shared_ptr< TextEntity > line = make_shared<TextEntity>(UTF8String("\xE2\x88\x83y \xE2\x88\x80x \xC2\xAC(x \xE2\x89\xBA y)"), GetFontManager()->GetResource("DejaVu"));
line->SetTextScale(0.01f);
line->SetPosition(Vector3(0.f, 0.f, 0.01f));
line->SetColour(Colours::ALIZARIN_CRIMSON);
mScene.AddRenderable(line);
line = make_shared<TextEntity>(UTF8String("Multi\nline"), GetFontManager()->GetResource("DejaVu"));
line->SetTextScale(0.01f);
line->SetPosition(Vector3(0.f, -2.f, 0.01f));
line->SetColour(Colours::ALIZARIN_CRIMSON);
mScene.AddRenderable(line);
File textFile = GetFileSystem()->Open("data/Messages.txt");
std::vector<std::string> lines;
textFile.ReadLines(lines,false,"#");
for(size_t i=0; i<lines.size();++i)
{
const std::string& line = lines[i];
std::string left;
UTF8String right;
if(Utils::String::SplitInTwo(line,"=",left,right))
{
std::cout << "Creating text with font: " << left << " contents: " << right << std::endl;
shared_ptr<Font> font=GetFontManager()->GetResource(left);
shared_ptr<TextEntity> text=make_shared<TextEntity>(right,font);
text->SetTextScale(0.01f);
text->UpdateMesh();
f32 y=i;
y+=lines.size() * 0.6f;
text->SetPosition(Vector3(0.f, y , 0.5f + 0.1f*i));
text->SetColour(Colours::GOLD_METALLIC);
mScene.AddRenderable(text);
}else
{
std::cout << "Could not split line(" << i << "): " << line << std::endl;
}
}
shared_ptr<Font> font = GetFontManager()->GetResource("TestFont");
if(font)
{
mColourSpinner = shared_ptr<Spinner>(new Spinner(boost::bind(&TextRenderTest::SetColour,this,_1,_2),1.f,1.0f,0.f));
AddTask(mColourSpinner.get());
}
mTimeout2 = new CountDownTimer(Seconds(5.0),boost::bind(&TextEntity::Set,mTextEntity,"Echo engine!"),"ChangeText");
AddTask(mTimeout2);
}
void SetColour(f32 a,f32 b)
{
shared_ptr<Font> font = GetFontManager()->GetResource("TestFont");
if(font)
{
font->GetMaterial()->GetPass(0)->SetDiffuse(Colour(a,b,1.f));
}
}
private:
Scene mScene;
shared_ptr< TextEntity > mTextEntity;
shared_ptr<Spinner> mSpinner;
shared_ptr<Spinner> mColourSpinner;
CountDownTimer mTimeout;
CountDownTimer* mTimeout2;
CountDownTimer* mTimeoutChangeFormat;
};
shared_ptr<Kernel> EchoInitialise()
{
shared_ptr<Application> application = shared_ptr<Application>(new TextRenderTest());
return application;
}

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