HRESULT APPLICATION::Render()
{
//Setup the viewport
D3DVIEWPORT9 v, v2;
v.Width = 800;
v.Height = 600;
v.X = 0;
v.Y = 0;
v.MaxZ = 1.0f;
v.MinZ = 0.0f;
m_pDevice->SetViewport(&v);
v2 = v;
// Clear the viewport
m_pDevice->Clear(0L, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 0xff4444ff, 1.0f, 0L );
// Begin the scene
if(SUCCEEDED(m_pDevice->BeginScene()))
{
//Render big city
m_city.Render(&m_camera);
RECT r[] = {{10, 10, 0, 0}, {10, 30, 0, 0}, {10, 50, 0, 0}};
m_pFont->DrawText(NULL, "Mouse Wheel: Change Camera Radius", -1, &r[0], DT_LEFT| DT_TOP | DT_NOCLIP, 0xff000000);
m_pFont->DrawText(NULL, "Arrows: Change Camera Angle", -1, &r[1], DT_LEFT| DT_TOP | DT_NOCLIP, 0xff000000);
//Render city overview, set viewport
v.X = 550;
v.Y = 20;
v.Width = 230;
v.Height = 230;
m_pDevice->SetViewport(&v);
m_pDevice->Clear(0L, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 0xffffffff, 1.0f, 0L );
//Setup camera view to orthogonal view looking down on city
D3DXMATRIX viewTop, projectionTop;
D3DXMatrixLookAtLH(&viewTop, &(m_city.GetCenter() + D3DXVECTOR3(0.0f, 100.0f, 0.0f)), &m_city.GetCenter(), &D3DXVECTOR3(0,0,1));
D3DXMatrixOrthoLH(&projectionTop, m_city.m_size.x * TILE_SIZE, m_city.m_size.y * TILE_SIZE, 0.1f, 1000.0f);
m_pDevice->SetTransform(D3DTS_VIEW, &viewTop);
m_pDevice->SetTransform(D3DTS_PROJECTION, &projectionTop);
//Draw city blocks that are in view
m_city.Render(NULL);
//Restore viewport
m_pDevice->SetViewport(&v2);
//Draw line around smaller window
D3DXVECTOR2 outline[] = {D3DXVECTOR2(550, 20), D3DXVECTOR2(779, 20), D3DXVECTOR2(779, 249), D3DXVECTOR2(550, 249), D3DXVECTOR2(550, 20)};
m_pLine->SetWidth(3.0f);
m_pLine->Begin();
m_pLine->Draw(outline, 5, 0xff000000);
m_pLine->End();
//Draw mouse
m_mouse.Paint();
// End the scene.
m_pDevice->EndScene();
m_pDevice->Present(0, 0, 0, 0);
}
return S_OK;
}
HRESULT APPLICATION::Render()
{
// Clear the viewport
m_pDevice->Clear(0L, NULL, D3DCLEAR_TARGET | D3DCLEAR_ZBUFFER, 0x00000000, 1.0f, 0L );
// Begin the scene
if(SUCCEEDED(m_pDevice->BeginScene()))
{
for(int i=0;i<(int)m_objects.size();i++)
m_objects[i].Render();
//Find intersecting object closest to the camera
D3DXMATRIX identity;
D3DXMatrixIdentity(&identity);
int object = -1;
float bestDist = 100000.0f;
for(int i=0;i<(int)m_objects.size() - 1;i++)
{
float dist = -1.0f;
//Do intersection tests
if(m_intersectType == 0)
{
m_pDevice->SetTransform(D3DTS_WORLD, &m_objects[i].m_meshInstance.GetWorldMatrix());
RAY ray = m_mouse.GetRay();
dist = ray.Intersect(m_objects[i].m_meshInstance);
}
else if(m_intersectType == 1)
{
m_pDevice->SetTransform(D3DTS_WORLD, &identity);
RAY ray = m_mouse.GetRay();
dist = ray.Intersect(m_objects[i].m_BBox);
}
else if(m_intersectType == 2)
{
m_pDevice->SetTransform(D3DTS_WORLD, &identity);
RAY ray = m_mouse.GetRay();
dist = ray.Intersect(m_objects[i].m_BSphere);
}
m_objects[i].RenderBoundingVolume(m_intersectType);
if(dist >= 0.0f && dist < bestDist)
{
object = i;
bestDist = dist;
}
}
//Write m_mouse text
if(object != -1)
{
RECT mr[] = {{m_mouse.x + 2, m_mouse.y + 24, 0, 0}, {m_mouse.x, m_mouse.y + 22, 0, 0}};
m_pFontMouse->DrawText(NULL, m_objects[object].m_name.c_str(), -1, &mr[0], DT_LEFT| DT_TOP | DT_NOCLIP, 0xff000000);
m_pFontMouse->DrawText(NULL, m_objects[object].m_name.c_str(), -1, &mr[1], DT_LEFT| DT_TOP | DT_NOCLIP, 0xffff0000);
}
RECT r[] = {{10, 10, 0, 0}, {10, 30, 0, 0}, {10, 50, 0, 0}};
m_pFont->DrawText(NULL, "Mouse Wheel: Change Camera Radius", -1, &r[0], DT_LEFT| DT_TOP | DT_NOCLIP, 0xffffffff);
m_pFont->DrawText(NULL, "Arrows: Change Camera Angle", -1, &r[1], DT_LEFT| DT_TOP | DT_NOCLIP, 0xffffffff);
m_pFont->DrawText(NULL, "Space: Change Bounding Volume", -1, &r[2], DT_LEFT| DT_TOP | DT_NOCLIP, 0xffffffff);
RECT rc = {500, 10, 0, 0};
if(m_intersectType == 0)
m_pFont->DrawText(NULL, "Mesh Intersection Test", -1, &rc, DT_LEFT| DT_TOP | DT_NOCLIP, 0xffffffff);
else if(m_intersectType == 1)
m_pFont->DrawText(NULL, "Box Intersection Test", -1, &rc, DT_LEFT| DT_TOP | DT_NOCLIP, 0xffffffff);
else if(m_intersectType == 2)
m_pFont->DrawText(NULL, "Sphere Intersection Test", -1, &rc, DT_LEFT| DT_TOP | DT_NOCLIP, 0xffffffff);
//Draw m_mouse
m_mouse.Paint();
// End the scene.
m_pDevice->EndScene();
m_pDevice->Present(0, 0, 0, 0);
}
return S_OK;
}