Version 1 vs 2
Version 1 vs 2
Edits
Edits
- Edit by 0xseantasker, Version 2
- Aug 29 2014 8:05 PM
- Edit by 0xseantasker, Version 1
- Aug 22 2014 10:30 AM
| Original Change | Next Change » |
| Edit Older Version 1... | Edit Older Version 2... |
Content Changes
Content Changes
This is a simple example to show how to use Echo for rendering.
In this example we use a custom scene renderable object that renders a cube mesh. The cube is created manually rather than loading a file to keep this example simple (i.e. not use resources). This example renders the cube through two different viewports using a Multi-Renderer.
```
//Platform and Kernel includes
#include <echo/Platform.h>
#include <echo/Kernel/Kernel.h>
//Rendering includes
#include <echo/Graphics/Renderer.h>
#include <echo/Graphics/MultiRenderer.h>
#include <echo/Graphics/Scene.h>
#include <echo/Graphics/Camera.h>
#include <echo/Graphics/Viewport.h>
//Graphics object includes
#include <echo/Graphics/Mesh.h>
#include <echo/Graphics/SubMesh.h>
//To make this example a little easier on the eyes.
using namespace Echo;
//A basic custom scene renderable.
class SpinningCube : public SceneRenderable
{
public:
SpinningCube() : mAngle(0)
{
//Create a cube
SubMesh* subMesh=mMesh.CreateSubMesh();
subMesh->AddVertex(Vector3(-2,2,-2));
subMesh->AddColour(Colour(1,0,0));
subMesh->AddVertex(Vector3(2,2,-2));
subMesh->AddColour(Colour(0,1,0));
subMesh->AddVertex(Vector3(-2,-2,-2));
subMesh->AddColour(Colour(0,0,1));
subMesh->AddVertex(Vector3(2,-2,-2));
subMesh->AddColour(Colour(1,1,0));
subMesh->AddVertex(Vector3(-2,2,2));
subMesh->AddColour(Colour(1,1,0));
subMesh->AddVertex(Vector3(2,2,2));
subMesh->AddColour(Colour(0,0,1));
subMesh->AddVertex(Vector3(-2,-2,2));
subMesh->AddColour(Colour(0,1,0));
subMesh->AddVertex(Vector3(2,-2,2));
subMesh->AddColour(Colour(1,0,0));
subMesh->AddFace(IndexedTriangle(0,1,2));
subMesh->AddFace(IndexedTriangle(2,1,3));
subMesh->AddFace(IndexedTriangle(5,4,6));
subMesh->AddFace(IndexedTriangle(5,6,7));
subMesh->AddFace(IndexedTriangle(4,0,6));
subMesh->AddFace(IndexedTriangle(6,0,2));
subMesh->AddFace(IndexedTriangle(0,4,5));
subMesh->AddFace(IndexedTriangle(0,5,1));
subMesh->AddFace(IndexedTriangle(1,5,3));
subMesh->AddFace(IndexedTriangle(3,5,7));
subMesh->AddFace(IndexedTriangle(2,3,7));
subMesh->AddFace(IndexedTriangle(2,7,6));
mMesh.CalculateAABB();
//Create a basic material for the cube
shared_ptr<Material> material(new Material());
RenderPass pass;
pass.SetCullMode(RenderPass::CullModes::BACK);
material->AddPass(pass);
//Set the mesh material
mMesh.SetMaterial(material);
}
AxisAlignedBox GetLocalAxisAlignedBox()
{
AxisAlignedBox box;
box.setMinimum(mMesh.GetMin());
box.setMaximum(mMesh.GetMax());
return box;
}
void Render(const Matrix4& transform, RenderTarget& renderTarget)
{
SetOrientation(Quaternion(Radian(mAngle),Vector3(0.4,0.5,1)));
mAngle+=0.1f;
mMesh.Render(transform * GetTransform(),renderTarget);
}
private:
Mesh mMesh;
f32 mAngle;
};
int main(int argc, const char* args[])
{
//You don't have to use a kernel object if you want to manage frame updates yourself.
Kernel kernel;
//Create a render window
shared_ptr<RenderTarget> target = Platform::CreateRenderTarget("Window",kernel,800,300,32,false);
// Renderers are used to render a camera (which renders a scene) in a viewport on a render target. They act as simple mapping
// objects and perform screen clearing and buffer swapping.
//
// A multirenderer will render multiple Renderer objects and control the screen clearing and buffer swapping (otherwise you would
// need to configure each Renderer yourself (which is entirely possible).
MultiRenderer renderer(target);
// Create a scene with a camera.
Scene scene;
shared_ptr<Camera> camera = scene.CreateCamera();
camera->SetPosition(0,0,10);
// Create two renderers taking half of the screen each.
renderer.CreateRenderer(make_shared<Viewport>(0,0,0.5,1),camera);
renderer.CreateRenderer(make_shared<Viewport>(0.5,0,1,1),camera);
// Add our multi-renderer as a task to the Kernel. The Renderer's Update() method will render the
// screen so you may need to set the priority of the task so it updates last.
kernel.AddTask(renderer);
// Create a spinning cube object, defined above.
shared_ptr< SpinningCube > spinningCube(new SpinningCube());
scene.AddRenderable(spinningCube);
// Start out program loop
kernel.Execute(Platform::CreateExecutionModel());
return 0;
}
```
This is a simple example to show how to use Echo for rendering.
```
int main(int argc, char** argv)
{
Kernel kernel;
shared_ptr<RenderTarget> target = Platform::CreateRenderTarget("Window",kernel,800,300,32,false);
MultiRenderer renderer(target);
Scene scene;
shared_ptr<Camera> camera = scene.CreateCamera();
camera->SetPosition(-1,10,10);
camera->LookAt(0,0,0);
shared_ptr<Camera> camera2 = scene.CreateCamera();
camera2->SetPosition(1,10,10);
camera2->LookAt(0,0,0);
renderer.CreateRenderer(make_shared<Viewport>(0,0,0.5,1),camera);
renderer.CreateRenderer(make_shared<Viewport>(0.5,0,1,1),camera2);
kernel.AddTask(renderer);
kernel.Execute(Platform::CreateExecutionModel());
return 0;
}
```
In this example we use a custom scene renderable object that renders a cube mesh. The cube is created manually rather than loading a file to keep this example simple (i.e. not use resources). This example renders the cube through two different viewports using a Multi-Renderer.
```
//Platform and Kernel includes
#include <echo/Platform.h>
#include <echo/Kernel/Kernel.h>
//Rendering includes
#include <echo/Graphics/Renderer.h>
#include <echo/Graphics/MultiRenderer.h>
#include <echo/Graphics/Scene.h>
#include <echo/Graphics/Camera.h>
#include <echo/Graphics/Viewport.h>
//Graphics object includes
#include <echo/Graphics/Mesh.h>
#include <echo/Graphics/SubMesh.h>
//To make this example a little easier on the eyes.
using namespace Echo;
//A basic custom scene renderable.
class SpinningCube : public SceneRenderable
{
public:
SpinningCube() : mAngle(0)
{
//Create a cube
SubMesh* subMesh=mMesh.CreateSubMesh();
subMesh->AddVertex(Vector3(-2,2,-2));
subMesh->AddColour(Colour(1,0,0));
subMesh->AddVertex(Vector3(2,2,-2));
subMesh->AddColour(Colour(0,1,0));
subMesh->AddVertex(Vector3(-2,-2,-2));
subMesh->AddColour(Colour(0,0,1));
subMesh->AddVertex(Vector3(2,-2,-2));
subMesh->AddColour(Colour(1,1,0));
subMesh->AddVertex(Vector3(-2,2,2));
subMesh->AddColour(Colour(1,1,0));
subMesh->AddVertex(Vector3(2,2,2));
subMesh->AddColour(Colour(0,0,1));
subMesh->AddVertex(Vector3(-2,-2,2));
subMesh->AddColour(Colour(0,1,0));
subMesh->AddVertex(Vector3(2,-2,2));
subMesh->AddColour(Colour(1,0,0));
subMesh->AddFace(IndexedTriangle(0,1,2));
subMesh->AddFace(IndexedTriangle(2,1,3));
subMesh->AddFace(IndexedTriangle(5,4,6));
subMesh->AddFace(IndexedTriangle(5,6,7));
subMesh->AddFace(IndexedTriangle(4,0,6));
subMesh->AddFace(IndexedTriangle(6,0,2));
subMesh->AddFace(IndexedTriangle(0,4,5));
subMesh->AddFace(IndexedTriangle(0,5,1));
subMesh->AddFace(IndexedTriangle(1,5,3));
subMesh->AddFace(IndexedTriangle(3,5,7));
subMesh->AddFace(IndexedTriangle(2,3,7));
subMesh->AddFace(IndexedTriangle(2,7,6));
mMesh.CalculateAABB();
//Create a basic material for the cube
shared_ptr<Material> material(new Material());
RenderPass pass;
pass.SetCullMode(RenderPass::CullModes::BACK);
material->AddPass(pass);
//Set the mesh material
mMesh.SetMaterial(material);
}
AxisAlignedBox GetLocalAxisAlignedBox()
{
AxisAlignedBox box;
box.setMinimum(mMesh.GetMin());
box.setMaximum(mMesh.GetMax());
return box;
}
void Render(const Matrix4& transform, RenderTarget& renderTarget)
{
SetOrientation(Quaternion(Radian(mAngle),Vector3(0.4,0.5,1)));
mAngle+=0.1f;
mMesh.Render(transform * GetTransform(),renderTarget);
}
private:
Mesh mMesh;
f32 mAngle;
};
int main(int argc, const char* args[])
{
//You don't have to use a kernel object if you want to manage frame updates yourself.
Kernel kernel;
//Create a render window
shared_ptr<RenderTarget> target = Platform::CreateRenderTarget("Window",kernel,800,300,32,false);
// Renderers are used to render a camera (which renders a scene) in a viewport on a render target. They act as simple mapping
// objects and perform screen clearing and buffer swapping.
//
// A multirenderer will render multiple Renderer objects and control the screen clearing and buffer swapping (otherwise you would
// need to configure each Renderer yourself (which is entirely possible).
MultiRenderer renderer(target);
// Create a scene with a camera.
Scene scene;
shared_ptr<Camera> camera = scene.CreateCamera();
camera->SetPosition(0,0,10);
// Create two renderers taking half of the screen each.
renderer.CreateRenderer(make_shared<Viewport>(0,0,0.5,1),camera);
renderer.CreateRenderer(make_shared<Viewport>(0.5,0,1,1),camera);
// Add our multi-renderer as a task to the Kernel. The Renderer's Update() method will render the
// screen so you may need to set the priority of the task so it updates last.
kernel.AddTask(renderer);
// Create a spinning cube object, defined above.
shared_ptr< SpinningCube > spinningCube(new SpinningCube());
scene.AddRenderable(spinningCube);
// Start out program loop
kernel.Execute(Platform::CreateExecutionModel());
return 0;
}
```
This is a simple example to show how to use Echo for rendering.
```
int main(int argc, char** argv)
{
Kernel kernel;
shared_ptr<RenderTarget> target = Platform::CreateRenderTarget("Window",kernel,800,300,32,false);
MultiRenderer renderer(target);
Scene scene;
shared_ptr<Camera> camera = scene.CreateCamera();
camera->SetPosition(-1,10,10);
camera->LookAt(0,0,0);
shared_ptr<Camera> camera2 = scene.CreateCamera();
camera2->SetPosition(1,10,10);
camera2->LookAt(0,0,0);
renderer.CreateRenderer(make_shared<Viewport>(0,0,0.5,1),camera);
renderer.CreateRenderer(make_shared<Viewport>(0.5,0,1,1),camera2);
kernel.AddTask(renderer);
kernel.Execute(Platform::CreateExecutionModel());
return 0;
}
```
In this example we use a custom scene renderable object that renders a cube mesh. The cube is created manually rather than loading a file to keep this example simple (i.e. not use resources). This example renders the cube through two different viewports using a Multi-Renderer.
```
//Platform and Kernel includes
#include <echo/Platform.h>
#include <echo/Kernel/Kernel.h>
//Rendering includes
#include <echo/Graphics/Renderer.h>
#include <echo/Graphics/MultiRenderer.h>
#include <echo/Graphics/Scene.h>
#include <echo/Graphics/Camera.h>
#include <echo/Graphics/Viewport.h>
//Graphics object includes
#include <echo/Graphics/Mesh.h>
#include <echo/Graphics/SubMesh.h>
//To make this example a little easier on the eyes.
using namespace Echo;
//A basic custom scene renderable.
class SpinningCube : public SceneRenderable
{
public:
SpinningCube() : mAngle(0)
{
//Create a cube
SubMesh* subMesh=mMesh.CreateSubMesh();
subMesh->AddVertex(Vector3(-2,2,-2));
subMesh->AddColour(Colour(1,0,0));
subMesh->AddVertex(Vector3(2,2,-2));
subMesh->AddColour(Colour(0,1,0));
subMesh->AddVertex(Vector3(-2,-2,-2));
subMesh->AddColour(Colour(0,0,1));
subMesh->AddVertex(Vector3(2,-2,-2));
subMesh->AddColour(Colour(1,1,0));
subMesh->AddVertex(Vector3(-2,2,2));
subMesh->AddColour(Colour(1,1,0));
subMesh->AddVertex(Vector3(2,2,2));
subMesh->AddColour(Colour(0,0,1));
subMesh->AddVertex(Vector3(-2,-2,2));
subMesh->AddColour(Colour(0,1,0));
subMesh->AddVertex(Vector3(2,-2,2));
subMesh->AddColour(Colour(1,0,0));
subMesh->AddFace(IndexedTriangle(0,1,2));
subMesh->AddFace(IndexedTriangle(2,1,3));
subMesh->AddFace(IndexedTriangle(5,4,6));
subMesh->AddFace(IndexedTriangle(5,6,7));
subMesh->AddFace(IndexedTriangle(4,0,6));
subMesh->AddFace(IndexedTriangle(6,0,2));
subMesh->AddFace(IndexedTriangle(0,4,5));
subMesh->AddFace(IndexedTriangle(0,5,1));
subMesh->AddFace(IndexedTriangle(1,5,3));
subMesh->AddFace(IndexedTriangle(3,5,7));
subMesh->AddFace(IndexedTriangle(2,3,7));
subMesh->AddFace(IndexedTriangle(2,7,6));
mMesh.CalculateAABB();
//Create a basic material for the cube
shared_ptr<Material> material(new Material());
RenderPass pass;
pass.SetCullMode(RenderPass::CullModes::BACK);
material->AddPass(pass);
//Set the mesh material
mMesh.SetMaterial(material);
}
AxisAlignedBox GetLocalAxisAlignedBox()
{
AxisAlignedBox box;
box.setMinimum(mMesh.GetMin());
box.setMaximum(mMesh.GetMax());
return box;
}
void Render(const Matrix4& transform, RenderTarget& renderTarget)
{
SetOrientation(Quaternion(Radian(mAngle),Vector3(0.4,0.5,1)));
mAngle+=0.1f;
mMesh.Render(transform * GetTransform(),renderTarget);
}
private:
Mesh mMesh;
f32 mAngle;
};
int main(int argc, const char* args[])
{
//You don't have to use a kernel object if you want to manage frame updates yourself.
Kernel kernel;
//Create a render window
shared_ptr<RenderTarget> target = Platform::CreateRenderTarget("Window",kernel,800,300,32,false);
// Renderers are used to render a camera (which renders a scene) in a viewport on a render target. They act as simple mapping
// objects and perform screen clearing and buffer swapping.
//
// A multirenderer will render multiple Renderer objects and control the screen clearing and buffer swapping (otherwise you would
// need to configure each Renderer yourself (which is entirely possible).
MultiRenderer renderer(target);
// Create a scene with a camera.
Scene scene;
shared_ptr<Camera> camera = scene.CreateCamera();
camera->SetPosition(0,0,10);
// Create two renderers taking half of the screen each.
renderer.CreateRenderer(make_shared<Viewport>(0,0,0.5,1),camera);
renderer.CreateRenderer(make_shared<Viewport>(0.5,0,1,1),camera);
// Add our multi-renderer as a task to the Kernel. The Renderer's Update() method will render the
// screen so you may need to set the priority of the task so it updates last.
kernel.AddTask(renderer);
// Create a spinning cube object, defined above.
shared_ptr< SpinningCube > spinningCube(new SpinningCube());
scene.AddRenderable(spinningCube);
// Start out program loop
kernel.Execute(Platform::CreateExecutionModel());
return 0;
}
```