void triebWerk::CEntity::SetDrawable(IDrawable * a_pDrawable)
{
RemoveDrawable();
m_pDrawable = a_pDrawable;
}
void GraphicContext::EndDraw()
{
//wglMakeCurrent(GetDC(_rcontext->getWindow()->CMWindowHandle()), _rcontext->getRenderingContext());
glFlush();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//actual draw
CMShape *_drawableShape = *_drawables.begin();
glUseProgram(_rcontext->getProgramIndex());
for (int i = 0; i < _drawables.size(); i++)
{
std::cout << _cameraX << std::endl;
_drawableShape = _drawables.at(i);
//elegant way of transforming primitives
if (_drawableShape->GetIndices().size() == 0)
{
RemoveDrawable(_drawableShape);
i--;
continue;
}
//first projection, as it should be
_projection = _defaultProjection;
_view= glm::translate(glm::vec3(_cameraX, _cameraY, 0.0f));
//then translate the primitive where it should be
_projection = glm::translate(_projection, glm::vec3(_drawableShape->GetX(), _drawableShape->GetY(), 0.0f));
//then scale the primitive as it should be
if (_drawableShape->GetSize().getX() != 1 || _drawableShape->GetSize().getY() != 1)
_projection = glm::scale(_projection, glm::vec3(_drawableShape->GetSize().getX(), _drawableShape->GetSize().getY(), 0.0f));
//then rotate the primitive as it should be
if (_drawableShape->GetRotation() != 0 || _drawableShape->GetOrigon().getX() != 0 || _drawableShape->GetOrigon().getY() != 0)
{
_projection = glm::rotate(_projection, (float)_drawableShape->GetRotation(), glm::vec3(0.0f, 0.0f, 1.0f)) * glm::translate(glm::vec3(-_drawableShape->GetOrigon().getX(), -_drawableShape->GetOrigon().getY(), 0.0f));
}
//finish with a touch of mint and glUniformMatrix4fv, and voilá!
glUniformMatrix4fv(_projectionLocation, 1, GL_FALSE, reinterpret_cast<const float*>(&_projection));
glUniformMatrix4fv(_viewLocation, 1, GL_FALSE, reinterpret_cast<const float*>(&_view));
//you got yourself a handy way of dumping your workload to the GPU!
glUniform3f(_colorIndex, _drawableShape->GetColorR(), _drawableShape->GetColorG(), _drawableShape->GetColorB());
glUniform1f(_alphaChannel, _drawableShape->GetColorA());
//set vertex data
glBindBuffer(GL_ARRAY_BUFFER, buffers[0]);
glBufferData(GL_ARRAY_BUFFER, sizeof(GLfloat)* _drawableShape->GetVertices().size(), &_drawableShape->GetVertices()[0], GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
//set fragment data
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[1]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(GLfloat)*_drawableShape->GetIndices().size(), &_drawableShape->GetIndices()[0], GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[1]);
glBindTexture(GL_TEXTURE_2D, _drawableShape->_hasImage ?_drawableShape->GetImage()->getTextureId() : 0);
glDrawElements(GL_TRIANGLES, _drawableShape->GetIndices().size(), GL_UNSIGNED_INT, reinterpret_cast<GLvoid*>(0));
}
glBindTexture(GL_TEXTURE_2D, 0u);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
glUseProgram(0);
SwapBuffers(_rcontext->getHDC());//Bring back buffer to foreground
}
