Week10 [30/11] - [06/12]
Added active Variable to the Lights Classes Added updated MD2Loader Class Added Model Filename and Texture File Name to the Model Class Added Active Flag to the Model Class Added DrawMode to the Model Class Added Texture and UV Variables to the Model Class Added UV Coordinates to the Polygon3D Class Added DrawString method to the Rasterizer to write text to the screen space Added Interpolate and Lerp Methods to the Rasterizer Added Select statement for drawing a current models draw mode Added DrawTextured Method to the Rasterizer Class Added UVCoord Class Added Texture Class Added = operator to the Vector3D Class Added UVCoord to the Vertex Class Moved Models and Texture Files into a subfolder Fixed issue with textures not loading properly because of the vector address problem
This commit is contained in:
IDunnoDev
645
Rasteriser.cpp
645
Rasteriser.cpp
@ -2,23 +2,60 @@
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Rasteriser app;
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Rasteriser::~Rasteriser()
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{
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_lights.~vector();
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_sceneModels.~vector();
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}
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void Rasteriser::DrawString(HDC hDc, int x, int y, LPCTSTR text, COLORREF textColor, COLORREF backgroundColor)
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{
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HFONT hFont, hOldFont;
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// Retrieve a handle to the variable stock font.
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hFont = hFont = CreateFont(48, 0, 0, 0, FW_DONTCARE, FALSE, FALSE, FALSE, DEFAULT_CHARSET, OUT_OUTLINE_PRECIS,
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CLIP_DEFAULT_PRECIS, CLEARTYPE_QUALITY, VARIABLE_PITCH, TEXT("Myfont"));
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// Select the variable stock font into the specified device context.
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if (hOldFont = (HFONT)SelectObject(hDc, hFont))
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{
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SetTextColor(hDc, textColor);
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SetBkColor(hDc, backgroundColor);
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// Display the text string.
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TextOut(hDc, x, y, text, lstrlen(text));
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// Restore the original font.
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SelectObject(hDc, hOldFont);
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}
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DeleteObject(hFont);
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}
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bool Rasteriser::Initialise()
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{
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Model modelA;
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if (MD2Loader::LoadModel(".\\marvin.MD2", modelA, &Model::AddPolygon, &Model::AddVertex))
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Model modelA = Model(_modelDataLocation + "cube.MD2", _modelDataLocation + "lines.pcx");
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// Changed to adding the model to the vector first because doing it once the model has been loaded
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// caused the texture pointers to be at incorrect addresses.............
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_sceneModels.push_back(modelA);
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for (Model& currentModel : _sceneModels)
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{
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_sceneModels.push_back(modelA);
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}
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else
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{
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return false;
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}
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if (MD2Loader::LoadModel(currentModel.CGetModelFilename(), currentModel.CGetTextureFilename(), currentModel, &Model::AddPolygon, &Model::AddVertex, &Model::AddTextureUV))
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{
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currentModel.SetDrawMethod(DrawMethod::Textured);
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currentModel.SetActive(true);
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}
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else
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{
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return false;
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}
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}
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_lights.push_back(new AmbientLight(150, 150, 150));
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//_lights.push_back(new AmbientLight(255, 255, 255));
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_lights.push_back(new DirectionalLight(Vector3D(-1, 0, -1), 150, 150, 150));
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//_lights.push_back(new PointLight(Vertex(-10, 0, 10), 0, 1, 0, 100, 0, 0));
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//_lights.push_back(new AmbientLight(50, 50, 50));
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_lights.push_back(new AmbientLight(255, 255, 255));
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//_lights.push_back(new DirectionalLight(Vector3D(-1, 0, 0), 150, 150, 150));
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_lights.push_back(new PointLight(Vertex(0, 0, -10), 0, 1, 0.01f, 150, 0, 0));
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_cameras.push_back(Camera(0.0f, 0.0f, 0.0f, Vertex(0.0f, 0.0f, -50.0f)));
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_screenMinimized = false;
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@ -58,7 +95,10 @@ void Rasteriser::CalculateLighting(Model& currentModel, bool fullLightRender)
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COLORREF colorWorking = RGB(0, 0, 0);
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for (Light* currentLight : _lights)
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{
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colorWorking = currentLight->CalculateLight(currentModel, currentModel.GetVertex(pi, i), colorWorking);
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if (currentLight->GetLightActive())
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{
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colorWorking = currentLight->CalculateLight(currentModel, currentModel.GetVertex(pi, i), colorWorking);
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}
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}
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currentModel.SetVertexColor(pi, i, colorWorking);
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}
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@ -68,7 +108,10 @@ void Rasteriser::CalculateLighting(Model& currentModel, bool fullLightRender)
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COLORREF colorWorking = RGB(0, 0, 0);
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for (Light* currentLight : _lights)
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{
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colorWorking = currentLight->CalculateLight(currentModel, currentModel.GetPolygon(pi), colorWorking);
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if (currentLight->GetLightActive())
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{
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colorWorking = currentLight->CalculateLight(currentModel, currentModel.GetPolygon(pi), colorWorking);
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}
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}
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currentModel.SetPolygonColor(pi, colorWorking);
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}
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@ -77,6 +120,26 @@ void Rasteriser::CalculateLighting(Model& currentModel, bool fullLightRender)
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}
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}
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float Rasteriser::Interpolate(float y, float x0, float x1, float y0, float y1)
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{
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return x0 + (y - y0) * ((x1 - x0) / (y1 - y0));
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}
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float Rasteriser::Interpolate(int y, int x0, int x1, int y0, int y1)
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{
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return Interpolate((float)y, (float)x0, (float)x1, (float)y0, (float)y1);
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}
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float Rasteriser::Lerp(float a, float b, float t)
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{
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return a + (b - a) * t;
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}
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float Rasteriser::Lerp(int a, int b, float t)
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{
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return Lerp((float)a, (float)b, t);
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}
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void Rasteriser::Update(const Bitmap& bitmap)
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{
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if (bitmap.GetWidth() == 0 || bitmap.GetHeight() == 0)
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@ -97,19 +160,22 @@ void Rasteriser::Update(const Bitmap& bitmap)
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for (Model& currentModel : _sceneModels)
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{
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currentModel.EnqueueTransform(GetTranslateMatrix(startPos));
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currentModel.EnqueueTransform(GetRotationMatrix(Axis::Y, (float)currentRot));
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//startPos.SetX(startPos.GetX() + 100);
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if ((currentModelIndex % 2) == 1)
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if (currentModel.GetActive())
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{
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currentZOff = 0;
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currentModel.EnqueueTransform(GetTranslateMatrix(startPos));
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currentModel.EnqueueTransform(GetRotationMatrix(Axis::Y, (float)currentRot));
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/*startPos.SetX(startPos.GetX() + 100);
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if ((currentModelIndex % 2) == 1)
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{
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currentZOff = 0;
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}
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else
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{
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currentZOff = 100;
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}
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startPos.SetZ((float)currentZOff);*/
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currentModelIndex++;
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}
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else
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{
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currentZOff = 100;
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}
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//startPos.SetZ((float)currentZOff);
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currentModelIndex++;
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}
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_currentAspectRatio = (float)(bitmap.GetWidth() / (float)bitmap.GetHeight());
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@ -137,31 +203,70 @@ void Rasteriser::Render(const Bitmap& bitmap)
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for (Model& currentModel : _sceneModels)
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{
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currentModel.SetReflectionCoefficient(0.5f, 0.5f, 0.5f);
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Matrix workingMatrix = workingMatrix.IdentityMatrix();
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for (Matrix currentTransform : currentModel.GetPendingTransforms())
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if (currentModel.GetActive())
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{
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workingMatrix *= currentTransform;
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currentModel.SetReflectionCoefficient(0.5f, 0.5f, 0.5f);
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Matrix workingMatrix = workingMatrix.IdentityMatrix();
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for (Matrix currentTransform : currentModel.GetPendingTransforms())
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{
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workingMatrix *= currentTransform;
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}
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currentModel.ApplyTransformToLocalVertices(workingMatrix);
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currentModel.ApplyTransformToTransformedVertices(GetCurrentCamera().GetCurrentCameraTransformMatrix());
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currentModel.CalculateBackfaces(GetCurrentCamera());
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currentModel.Sort();
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switch (currentModel.GetDrawMethod())
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{
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case (DrawMethod::Wireframe):
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currentModel.ApplyTransformToTransformedVertices(_currentPerspectiveMatrix);
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currentModel.DehomogenizeAllVertices();
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currentModel.ApplyTransformToTransformedVertices(_currentViewMatrix);
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DrawWireFrame(bitmap.GetDC(), currentModel);
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break;
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case (DrawMethod::Flat):
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currentModel.CalculateVertexNormals();
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CalculateLighting(currentModel, false);
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currentModel.ApplyTransformToTransformedVertices(_currentPerspectiveMatrix);
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currentModel.DehomogenizeAllVertices();
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currentModel.ApplyTransformToTransformedVertices(_currentViewMatrix);
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DrawSolidFlat(bitmap.GetDC(), currentModel);
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break;
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case (DrawMethod::FlatRaster):
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currentModel.CalculateVertexNormals();
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CalculateLighting(currentModel, false);
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currentModel.ApplyTransformToTransformedVertices(_currentPerspectiveMatrix);
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currentModel.DehomogenizeAllVertices();
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currentModel.ApplyTransformToTransformedVertices(_currentViewMatrix);
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DrawRasterisedSolidFlat(bitmap.GetDC(), currentModel);
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break;
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case (DrawMethod::Smooth):
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currentModel.CalculateVertexNormals();
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CalculateLighting(currentModel, true);
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currentModel.ApplyTransformToTransformedVertices(_currentPerspectiveMatrix);
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currentModel.DehomogenizeAllVertices();
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currentModel.ApplyTransformToTransformedVertices(_currentViewMatrix);
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DrawGouraud(bitmap.GetDC(), currentModel);
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break;
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case (DrawMethod::Textured):
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currentModel.CalculateVertexNormals();
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CalculateLighting(currentModel, true);
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currentModel.ApplyTransformToTransformedVertices(_currentPerspectiveMatrix);
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currentModel.DehomogenizeAllVertices();
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currentModel.ApplyTransformToTransformedVertices(_currentViewMatrix);
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DrawSolidTextured(bitmap.GetDC(), currentModel);
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break;
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}
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currentModel.ClearPendingTransforms();
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}
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currentModel.ApplyTransformToLocalVertices(workingMatrix);
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currentModel.ApplyTransformToTransformedVertices(GetCurrentCamera().GetCurrentCameraTransformMatrix());
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currentModel.CalculateBackfaces(GetCurrentCamera());
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currentModel.Sort();
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currentModel.CalculateVertexNormals();
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CalculateLighting(currentModel, true);
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currentModel.ApplyTransformToTransformedVertices(_currentPerspectiveMatrix);
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currentModel.DehomogenizeAllVertices();
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currentModel.ApplyTransformToTransformedVertices(_currentViewMatrix);
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//DrawWireFrame(bitmap.GetDC(), currentModel);
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//DrawSolidFlat(bitmap.GetDC(), currentModel);
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//DrawRasterisedSolidFlat(bitmap.GetDC(), currentModel);
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DrawGouraud(bitmap.GetDC(), currentModel);
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currentModel.ClearPendingTransforms();
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}
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DrawString(bitmap.GetDC(), 10, 10, _T("Hello World"));
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}
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}
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@ -179,8 +284,8 @@ void Rasteriser::DrawSquare(HDC hDc, const vector<Vertex> verticies)
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pointArray[i].y = (long) verticies[i].GetY();
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}
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SetDCBrushColor(hDc, RGB(255, 0, 255));
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SetDCPenColor(hDc, RGB(0, 0, 255));
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SetDCBrushColor(hDc, RGB(rand() % 256, rand() % 256, rand() % 256));
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SetDCPenColor(hDc, RGB(rand() % 256, rand() % 256, rand() % 256));
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Polygon(hDc, pointArray, 4);
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}
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@ -225,6 +330,8 @@ void Rasteriser::DrawWireFrame(HDC hDc, Model& model)
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}
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}
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SetDCBrushColor(hDc, RGB(1,1,1));
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SetDCPenColor(hDc, RGB(255,255,255));
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PolyPolygon(hDc, pointArray.data(), sizeArray.data(), unculledPolyCount);
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}
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@ -280,6 +387,20 @@ void Rasteriser::DrawGouraud(HDC hDc, Model& model)
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}
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}
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void Rasteriser::DrawSolidTextured(HDC hDc, Model& model)
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{
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int modelPolygonCount = (int)model.GetPolygonCount();
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for (int i = 0; i < modelPolygonCount; i++)
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{
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if (!model.GetPolygon(i).GetCulled())
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{
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vector<Vertex> vertexArray = model.GetPolygonVertexArray(i);
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FillPolygonTextured(hDc, model, vertexArray);
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}
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}
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}
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bool VerticiesYCompareAsc(Vertex& v1, Vertex& v2)
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{
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return v1.GetY() < v2.GetY();
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@ -326,11 +447,11 @@ void Rasteriser::FillFlatSideTriangle(HDC hDc, const Vertex& v1, const Vertex& v
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int dx2 = (int)ceil(abs(v3.GetX() - v1.GetX()));
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int dy2 = (int)ceil(abs(v3.GetY() - v1.GetY()));
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int signx1 = (int)sgn(v2.GetX() - v1.GetX());
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int signx2 = (int)sgn(v3.GetX() - v1.GetX());
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int signx1 = (int)ceil(sgn(v2.GetX() - v1.GetX()));
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int signx2 = (int)ceil(sgn(v3.GetX() - v1.GetX()));
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int signy1 = (int)sgn(v2.GetY() - v1.GetY());
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int signy2 = (int)sgn(v3.GetY() - v1.GetY());
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int signy1 = (int)ceil(sgn(v2.GetY() - v1.GetY()));
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int signy2 = (int)ceil(sgn(v3.GetY() - v1.GetY()));
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if (dy1 > dx1)
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{
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@ -353,72 +474,73 @@ void Rasteriser::FillFlatSideTriangle(HDC hDc, const Vertex& v1, const Vertex& v
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for (int i = 0; i <= dx1; i++)
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{
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int startPoint;
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int endPoint;
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float leftEndPoint;
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float rightEndPoint;
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if (tempA.GetXInt() < tempB.GetXInt())
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if (tempA.GetX() < tempB.GetX())
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{
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startPoint = tempA.GetXInt();
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endPoint = tempB.GetXInt();
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leftEndPoint = tempA.GetX() - 1.0f;
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rightEndPoint = tempB.GetX() + 1.0f;
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}
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else
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{
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startPoint = tempB.GetXInt();
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endPoint = tempA.GetXInt();
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leftEndPoint = tempB.GetX() - 1.0f;
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rightEndPoint = tempA.GetX() + 1.0f;
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}
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for (int xi = (int)ceil(startPoint); xi <= endPoint; xi++)
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for (int xi = (int)ceil(leftEndPoint); xi <= (int)ceil(rightEndPoint); xi++)
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{
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SetPixel(hDc, xi, tempA.GetYInt(), colorIn);
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}
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while (e1 >= 0)
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{
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if (changed1)
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{
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tempA.SetX(tempA.GetX() + signx1);
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tempA.SetX((float)tempA.GetX() + (float)signx1);
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}
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else
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{
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tempA.SetY(tempA.GetY() + signy1);
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tempA.SetY((float)tempA.GetY() + (float)signy1);
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}
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e1 = e1 - 2 * dx1;
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}
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if (changed1)
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{
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tempA.SetY(tempA.GetY() + signy1);
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tempA.SetY((float)tempA.GetY() + (float)signy1);
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}
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else
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{
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tempA.SetX(tempA.GetX() + signx1);
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tempA.SetX((float)tempA.GetX() + (float)signx1);
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}
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e1 = e1 + 2 * dy1;
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while (tempB.GetY() != tempA.GetY())
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while (tempB.GetYInt() != tempA.GetYInt())
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{
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while (e2 >= 0)
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{
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if (changed2)
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{
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tempB.SetX(tempB.GetX() + signx2);
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tempB.SetX((float)tempB.GetXInt() + (float)signx2);
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}
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else
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{
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tempB.SetY(tempB.GetY() + signy2);
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tempB.SetY((float)tempB.GetYInt() + (float)signy2);
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}
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e2 = e2 - 2 * dx2;
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}
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if (changed2)
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{
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tempB.SetY(tempB.GetY() + signy2);
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tempB.SetY((float)tempB.GetYInt() + (float)signy2);
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}
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else
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{
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tempB.SetX(tempB.GetX() + signx2);
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tempB.SetX((float)tempB.GetXInt() + (float)signx2);
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}
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e2 = e2 + 2 * dy2;
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}
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@ -426,112 +548,6 @@ void Rasteriser::FillFlatSideTriangle(HDC hDc, const Vertex& v1, const Vertex& v
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}
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void Rasteriser::FillPolygonGouraud(HDC hDc, vector<Vertex>& verts)
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{
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sort(verts.begin(), verts.end(), VerticiesYCompareAsc);
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if (verts[1].GetY() == verts[2].GetY())
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{
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FillGouraudBottomFlatTriangle(hDc, verts[0], verts[1], verts[2]);
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}
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else if (verts[0].GetY() == verts[1].GetY())
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{
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FillGouraudTopFlatTriangle(hDc, verts[0], verts[1], verts[2]);
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}
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else
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{
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Vertex temp = Vertex(verts[0].GetX() + ((verts[1].GetY() - verts[0].GetY()) / (verts[2].GetY() - verts[0].GetY())) * (verts[2].GetX() - verts[0].GetX()), verts[1].GetY(), verts[1].GetZ());
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temp.SetNormal(verts[1].GetNormal());
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float cRed = GetRValue(verts[0].GetColor()) + ((verts[1].GetY() - verts[0].GetY()) / (verts[2].GetY() - verts[0].GetY())) * (GetRValue(verts[2].GetColor()) - GetRValue(verts[0].GetColor()));
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float cGreen = GetGValue(verts[0].GetColor()) + ((verts[1].GetY() - verts[0].GetY()) / (verts[2].GetY() - verts[0].GetY())) * (GetGValue(verts[2].GetColor()) - GetGValue(verts[0].GetColor()));
|
||||
float cBlue = GetBValue(verts[0].GetColor()) + ((verts[1].GetY() - verts[0].GetY()) / (verts[2].GetY() - verts[0].GetY())) * (GetBValue(verts[2].GetColor()) - GetBValue(verts[0].GetColor()));
|
||||
temp.SetColor(RGB((int)cRed, (int)cGreen, (int)cBlue));
|
||||
|
||||
temp.SetColor(verts[1].GetColor());
|
||||
|
||||
FillGouraudBottomFlatTriangle(hDc, verts[0], verts[1], temp);
|
||||
FillGouraudTopFlatTriangle(hDc, verts[1], temp, verts[2]);
|
||||
}
|
||||
}
|
||||
|
||||
void Rasteriser::FillGouraudBottomFlatTriangle(HDC hDc, const Vertex& v1, const Vertex& v2, const Vertex& v3)
|
||||
{
|
||||
float slope1 = (float)(v2.GetX() - v1.GetX()) / (float)(v2.GetY() - v1.GetY());
|
||||
float slope2 = (float)(v3.GetX() - v1.GetX()) / (float)(v3.GetY() - v1.GetY());
|
||||
|
||||
float x1 = (float)v1.GetX();
|
||||
float x2 = (float)v1.GetX() + 0.5f;
|
||||
|
||||
if (slope2 < slope1)
|
||||
{
|
||||
float slopeTmp = slope1;
|
||||
slope1 = slope2;
|
||||
slope2 = slopeTmp;
|
||||
}
|
||||
|
||||
for (int scanlineY = (int)v1.GetY(); scanlineY <= (int)v2.GetY(); scanlineY++)
|
||||
{
|
||||
float iRedA = (scanlineY - v2.GetY()) / (v1.GetY() - v2.GetY()) * v1.GetR() + (v1.GetY() - scanlineY) / (v1.GetY() - v2.GetY()) * v2.GetR();
|
||||
float iRedB = (scanlineY - v3.GetY()) / (v1.GetY() - v3.GetY()) * v1.GetR() + (v1.GetY() - scanlineY) / (v1.GetY() - v3.GetY()) * v3.GetR();
|
||||
float iGreenA = (scanlineY - v2.GetY()) / (v1.GetY() - v2.GetY()) * v1.GetG() + (v1.GetY() - scanlineY) / (v1.GetY() - v2.GetY()) * v2.GetG();
|
||||
float iGreenB = (scanlineY - v3.GetY()) / (v1.GetY() - v3.GetY()) * v1.GetG() + (v1.GetY() - scanlineY) / (v1.GetY() - v3.GetY()) * v3.GetG();
|
||||
float iBlueA = (scanlineY - v2.GetY()) / (v1.GetY() - v2.GetY()) * v1.GetB() + (v1.GetY() - scanlineY) / (v1.GetY() - v2.GetY()) * v2.GetB();
|
||||
float iBlueB = (scanlineY - v3.GetY()) / (v1.GetY() - v3.GetY()) * v1.GetB() + (v1.GetY() - scanlineY) / (v1.GetY() - v3.GetY()) * v3.GetB();
|
||||
|
||||
for (int xi = (int)ceil(x1); xi < (int)x2; xi++)
|
||||
{
|
||||
float redTmp = (x2 - xi) / (x2 - x1) * iRedA + (xi - x1) / (x2 - x1) * iRedB;
|
||||
float greenTmp = (x2 - xi) / (x2 - x1) * iGreenA + (xi - x1) / (x2 - x1) * iGreenB;
|
||||
float blueTmp = (x2 - xi) / (x2 - x1) * iBlueA + (xi - x1) / (x2 - x1) * iBlueB;
|
||||
|
||||
COLORREF currentColor = RGB(BoundsCheck(0, 255, (int)redTmp), BoundsCheck(0, 255, (int)greenTmp), BoundsCheck(0, 255, (int)blueTmp));
|
||||
SetPixel(hDc, xi, scanlineY, currentColor);
|
||||
}
|
||||
|
||||
x1 += slope1;
|
||||
x2 += slope2;
|
||||
}
|
||||
}
|
||||
|
||||
void Rasteriser::FillGouraudTopFlatTriangle(HDC hDc, const Vertex& v1, const Vertex& v2, const Vertex& v3)
|
||||
{
|
||||
float slope1 = (float)(v3.GetX() - v1.GetX()) / (float)(v3.GetY() - v1.GetY());
|
||||
float slope2 = (float)(v3.GetX() - v2.GetX()) / (float)(v3.GetY() - v2.GetY());
|
||||
|
||||
float x1 = (float)v3.GetX();
|
||||
float x2 = (float)v3.GetX() + 0.5f;
|
||||
|
||||
if (slope1 < slope2)
|
||||
{
|
||||
float slopeTmp = slope1;
|
||||
slope1 = slope2;
|
||||
slope2 = slopeTmp;
|
||||
}
|
||||
|
||||
for (int scanlineY = (int)v3.GetY(); scanlineY > (int)v1.GetY(); scanlineY--)
|
||||
{
|
||||
float iRedA = (scanlineY - v2.GetY()) / (v1.GetY() - v2.GetY()) * v1.GetR() + (v1.GetY() - scanlineY) / (v1.GetY() - v2.GetY()) * v2.GetR();
|
||||
float iRedB = (scanlineY - v3.GetY()) / (v1.GetY() - v3.GetY()) * v1.GetR() + (v1.GetY() - scanlineY) / (v1.GetY() - v3.GetY()) * v3.GetR();
|
||||
float iGreenA = (scanlineY - v2.GetY()) / (v1.GetY() - v2.GetY()) * v1.GetG() + (v1.GetY() - scanlineY) / (v1.GetY() - v2.GetY()) * v2.GetG();
|
||||
float iGreenB = (scanlineY - v3.GetY()) / (v1.GetY() - v3.GetY()) * v1.GetG() + (v1.GetY() - scanlineY) / (v1.GetY() - v3.GetY()) * v3.GetG();
|
||||
float iBlueA = (scanlineY - v2.GetY()) / (v1.GetY() - v2.GetY()) * v1.GetB() + (v1.GetY() - scanlineY) / (v1.GetY() - v2.GetY()) * v2.GetB();
|
||||
float iBlueB = (scanlineY - v3.GetY()) / (v1.GetY() - v3.GetY()) * v1.GetB() + (v1.GetY() - scanlineY) / (v1.GetY() - v3.GetY()) * v3.GetB();
|
||||
|
||||
for (int xi = (int)ceil(x1); xi < (int)x2; xi++)
|
||||
{
|
||||
float redTmp = (x2 - xi) / (x2 - x1) * iRedA - (xi - x1) / (x2 - x1) * iRedB;
|
||||
float greenTmp = (x2 - xi) / (x2 - x1) * iGreenA - (xi - x1) / (x2 - x1) * iGreenB;
|
||||
float blueTmp = (x2 - xi) / (x2 - x1) * iBlueA - (xi - x1) / (x2 - x1) * iBlueB;
|
||||
|
||||
COLORREF currentColor = RGB(BoundsCheck(0, 255, (int)redTmp), BoundsCheck(0, 255, (int)greenTmp), BoundsCheck(0, 255, (int)blueTmp));
|
||||
SetPixel(hDc, xi, scanlineY, currentColor);
|
||||
}
|
||||
|
||||
x1 -= slope1;
|
||||
x2 -= slope2;
|
||||
}
|
||||
}
|
||||
|
||||
void Rasteriser::FillPolygonGouraudInt(HDC hDc, vector<Vertex>& verts)
|
||||
{
|
||||
sort(verts.begin(), verts.end(), VerticiesYCompareAsc);
|
||||
if (verts[1].GetY() == verts[2].GetY())
|
||||
@ -547,12 +563,13 @@ void Rasteriser::FillPolygonGouraudInt(HDC hDc, vector<Vertex>& verts)
|
||||
Vertex temp = Vertex(verts[0].GetX() + ((verts[1].GetY() - verts[0].GetY()) / (verts[2].GetY() - verts[0].GetY())) * (verts[2].GetX() - verts[0].GetX()), verts[1].GetY(), verts[1].GetZ());
|
||||
temp.SetNormal(verts[1].GetNormal());
|
||||
|
||||
float cRed = verts[0].GetR() + ((verts[1].GetY() - verts[0].GetY()) / (verts[2].GetY() - verts[0].GetY())) * (verts[2].GetR() - verts[0].GetR());
|
||||
float cGreen = verts[0].GetG() + ((verts[1].GetY() - verts[0].GetY()) / (verts[2].GetY() - verts[0].GetY())) * (verts[2].GetG() - verts[0].GetG());
|
||||
float cBlue = verts[0].GetB() + ((verts[1].GetY() - verts[0].GetY()) / (verts[2].GetY() - verts[0].GetY())) * (verts[2].GetB() - verts[0].GetB());
|
||||
float vDiff = ((verts[1].GetY() - verts[0].GetY()) / (verts[2].GetY() - verts[0].GetY()));
|
||||
float cRed = Lerp(verts[0].GetR(), verts[2].GetR(), vDiff);
|
||||
float cGreen = Lerp(verts[0].GetG(), verts[2].GetG(), vDiff);
|
||||
float cBlue = Lerp(verts[0].GetB(), verts[2].GetB(), vDiff);
|
||||
temp.SetColor(BoundsCheck(0, 255, (int)cRed), BoundsCheck(0, 255, (int)cGreen), BoundsCheck(0, 255, (int)cBlue));
|
||||
|
||||
if (verts[1].GetX() < temp.GetX())
|
||||
if (verts[1].GetX() <= temp.GetX())
|
||||
{
|
||||
FillGouraudSideTriangle(hDc, verts[0], verts[1], temp);
|
||||
FillGouraudSideTriangle(hDc, verts[2], verts[1], temp);
|
||||
@ -611,30 +628,35 @@ void Rasteriser::FillGouraudSideTriangle(HDC hDc, const Vertex& v1, const Vertex
|
||||
|
||||
if (tempA.GetX() < tempB.GetX())
|
||||
{
|
||||
leftEndPoint = tempA.GetX();
|
||||
rightEndPoint = tempB.GetX();
|
||||
leftEndPoint = tempA.GetX() - 1.0f;
|
||||
rightEndPoint = tempB.GetX() + 1.0f;
|
||||
}
|
||||
else
|
||||
{
|
||||
leftEndPoint = tempB.GetX();
|
||||
rightEndPoint = tempA.GetX();
|
||||
leftEndPoint = tempB.GetX() - 1.0f;
|
||||
rightEndPoint = tempA.GetX() + 1.0f;
|
||||
}
|
||||
|
||||
float iRedA = (tempA.GetY() - v2.GetY()) / (v1.GetY() - v2.GetY()) * v1.GetR() + (v1.GetY() - tempA.GetY()) / (v1.GetY() - v2.GetY()) * v2.GetR();
|
||||
float iRedB = (tempA.GetY() - v3.GetY()) / (v1.GetY() - v3.GetY()) * v1.GetR() + (v1.GetY() - tempA.GetY()) / (v1.GetY() - v3.GetY()) * v3.GetR();
|
||||
float iGreenA = (tempA.GetY() - v2.GetY()) / (v1.GetY() - v2.GetY()) * v1.GetG() + (v1.GetY() - tempA.GetY()) / (v1.GetY() - v2.GetY()) * v2.GetG();
|
||||
float iGreenB = (tempA.GetY() - v3.GetY()) / (v1.GetY() - v3.GetY()) * v1.GetG() + (v1.GetY() - tempA.GetY()) / (v1.GetY() - v3.GetY()) * v3.GetG();
|
||||
float iBlueA = (tempA.GetY() - v2.GetY()) / (v1.GetY() - v2.GetY()) * v1.GetB() + (v1.GetY() - tempA.GetY()) / (v1.GetY() - v2.GetY()) * v2.GetB();
|
||||
float iBlueB = (tempA.GetY() - v3.GetY()) / (v1.GetY() - v3.GetY()) * v1.GetB() + (v1.GetY() - tempA.GetY()) / (v1.GetY() - v3.GetY()) * v3.GetB();
|
||||
float iRedA = Lerp(v1.GetR(), v2.GetR(), (float)i / (float)dx1);
|
||||
float iRedB = Lerp(v1.GetR(), v3.GetR(), (float)i / (float)dx1);
|
||||
float iGreenA = Lerp(v1.GetG(), v2.GetG(), (float)i / (float)dx1);
|
||||
float iGreenB = Lerp(v1.GetG(), v3.GetG(), (float)i / (float)dx1);
|
||||
float iBlueA = Lerp(v1.GetB(), v2.GetB(), (float)i / (float)dx1);
|
||||
float iBlueB = Lerp(v1.GetB(), v3.GetB(), (float)i / (float)dx1);
|
||||
|
||||
for (int xi = (int)ceil(leftEndPoint); xi <= (int)rightEndPoint; xi++)
|
||||
{
|
||||
float redTmp = (rightEndPoint - xi) / (rightEndPoint - leftEndPoint) * iRedA + (xi - leftEndPoint) / (rightEndPoint - leftEndPoint) * iRedB;
|
||||
float greenTmp = (rightEndPoint - xi) / (rightEndPoint - leftEndPoint) * iGreenA + (xi - leftEndPoint) / (rightEndPoint - leftEndPoint) * iGreenB;
|
||||
float blueTmp = (rightEndPoint - xi) / (rightEndPoint - leftEndPoint) * iBlueA + (xi - leftEndPoint) / (rightEndPoint - leftEndPoint) * iBlueB;
|
||||
int xLength = (int)ceil(rightEndPoint) - (int)ceil(leftEndPoint);
|
||||
int ci = 0;
|
||||
|
||||
for (int xi = (int)ceil(leftEndPoint); xi <= (int)ceil(rightEndPoint); xi++)
|
||||
{
|
||||
float ti = (float)ci / (float)xLength;
|
||||
float redTmp = Lerp(iRedA, iRedB, ti);
|
||||
float greenTmp = Lerp(iGreenA, iGreenB, ti);
|
||||
float blueTmp = Lerp(iBlueA, iBlueB, ti);
|
||||
|
||||
COLORREF currentColor = RGB(BoundsCheck(0, 255, (int)redTmp), BoundsCheck(0, 255, (int)greenTmp), BoundsCheck(0, 255, (int)blueTmp));
|
||||
SetPixel(hDc, xi, tempA.GetYInt(), currentColor);
|
||||
ci++;
|
||||
}
|
||||
|
||||
|
||||
@ -642,27 +664,27 @@ void Rasteriser::FillGouraudSideTriangle(HDC hDc, const Vertex& v1, const Vertex
|
||||
{
|
||||
if (changed1)
|
||||
{
|
||||
tempA.SetX((float)tempA.GetXInt() + (float)signx1);
|
||||
tempA.SetX((float)tempA.GetX() + (float)signx1);
|
||||
}
|
||||
else
|
||||
{
|
||||
tempA.SetY((float)tempA.GetYInt() + (float)signy1);
|
||||
tempA.SetY((float)tempA.GetY() + (float)signy1);
|
||||
}
|
||||
e1 = e1 - 2 * dx1;
|
||||
}
|
||||
|
||||
if (changed1)
|
||||
{
|
||||
tempA.SetY((float)tempA.GetYInt() + (float)signy1);
|
||||
tempA.SetY((float)tempA.GetY() + (float)signy1);
|
||||
}
|
||||
else
|
||||
{
|
||||
tempA.SetX((float)tempA.GetXInt() + (float)signx1);
|
||||
tempA.SetX((float)tempA.GetX() + (float)signx1);
|
||||
}
|
||||
|
||||
e1 = e1 + 2 * dy1;
|
||||
|
||||
while (tempB.GetY() < tempA.GetY() && tempB.GetY() > tempA.GetY())
|
||||
while (tempB.GetYInt() != tempA.GetYInt())
|
||||
{
|
||||
while (e2 >= 0)
|
||||
{
|
||||
@ -689,3 +711,224 @@ void Rasteriser::FillGouraudSideTriangle(HDC hDc, const Vertex& v1, const Vertex
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void Rasteriser::FillPolygonTextured(HDC hDc, Model& model, vector<Vertex>& verts)
|
||||
{
|
||||
sort(verts.begin(), verts.end(), VerticiesYCompareAsc);
|
||||
if (verts[1].GetY() == verts[2].GetY())
|
||||
{
|
||||
FillTexturedSideTriangle(hDc, model, verts[0], verts[1], verts[2], model.GetUVCoord(verts[0].GetUVIndex()), model.GetUVCoord(verts[1].GetUVIndex()), model.GetUVCoord(verts[2].GetUVIndex()));
|
||||
}
|
||||
else if (verts[0].GetY() == verts[1].GetY())
|
||||
{
|
||||
FillTexturedSideTriangle(hDc, model, verts[2], verts[0], verts[1], model.GetUVCoord(verts[2].GetUVIndex()), model.GetUVCoord(verts[0].GetUVIndex()), model.GetUVCoord(verts[1].GetUVIndex()));
|
||||
}
|
||||
else
|
||||
{
|
||||
Vertex temp = Vertex(verts[0].GetX() + ((verts[1].GetY() - verts[0].GetY()) / (verts[2].GetY() - verts[0].GetY())) * (verts[2].GetX() - verts[0].GetX()), verts[1].GetY(), verts[1].GetZ());
|
||||
temp.SetNormal(verts[1].GetNormal());
|
||||
|
||||
float tempU = model.GetUVCoord(verts[0].GetUVIndex()).GetU() + ((verts[1].GetY() - verts[0].GetY()) / (verts[2].GetY() - verts[0].GetY())) * (model.GetUVCoord(verts[2].GetUVIndex()).GetU() - model.GetUVCoord(verts[0].GetUVIndex()).GetU());
|
||||
float tempV = model.GetUVCoord(verts[0].GetUVIndex()).GetV() + ((verts[1].GetY() - verts[0].GetY()) / (verts[2].GetY() - verts[0].GetY())) * (model.GetUVCoord(verts[2].GetUVIndex()).GetV() - model.GetUVCoord(verts[0].GetUVIndex()).GetV());
|
||||
|
||||
UVCoord tempCoords = UVCoord(tempU, tempV);
|
||||
|
||||
float cRed = verts[0].GetR() + ((verts[1].GetY() - verts[0].GetY()) / (verts[2].GetY() - verts[0].GetY())) * (verts[2].GetR() - verts[0].GetR());
|
||||
float cGreen = verts[0].GetG() + ((verts[1].GetY() - verts[0].GetY()) / (verts[2].GetY() - verts[0].GetY())) * (verts[2].GetG() - verts[0].GetG());
|
||||
float cBlue = verts[0].GetB() + ((verts[1].GetY() - verts[0].GetY()) / (verts[2].GetY() - verts[0].GetY())) * (verts[2].GetB() - verts[0].GetB());
|
||||
temp.SetColor(BoundsCheck(0, 255, (int)cRed), BoundsCheck(0, 255, (int)cGreen), BoundsCheck(0, 255, (int)cBlue));
|
||||
|
||||
if (verts[1].GetX() <= temp.GetX())
|
||||
{
|
||||
temp.SetUVIndex(verts[2].GetUVIndex());
|
||||
FillTexturedSideTriangle(hDc, model, verts[0], verts[1], temp, model.GetUVCoord(verts[0].GetUVIndex()), model.GetUVCoord(verts[1].GetUVIndex()), tempCoords);
|
||||
temp.SetUVIndex(verts[0].GetUVIndex());
|
||||
FillTexturedSideTriangle(hDc, model, verts[2], verts[1], temp, model.GetUVCoord(verts[2].GetUVIndex()), model.GetUVCoord(verts[1].GetUVIndex()), tempCoords);
|
||||
}
|
||||
else
|
||||
{
|
||||
temp.SetUVIndex(verts[2].GetUVIndex());
|
||||
FillTexturedSideTriangle(hDc, model, verts[0], temp, verts[1], model.GetUVCoord(verts[0].GetUVIndex()), tempCoords, model.GetUVCoord(verts[1].GetUVIndex()));
|
||||
temp.SetUVIndex(verts[0].GetUVIndex());
|
||||
FillTexturedSideTriangle(hDc, model, verts[2], temp, verts[1], model.GetUVCoord(verts[2].GetUVIndex()), tempCoords, model.GetUVCoord(verts[1].GetUVIndex()));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void Rasteriser::FillTexturedSideTriangle(HDC hDc, Model& model, const Vertex& v1, const Vertex& v2, const Vertex& v3, const UVCoord& uv1, const UVCoord& uv2, const UVCoord& uv3)
|
||||
{
|
||||
Vertex tempA = Vertex(v1);
|
||||
Vertex tempB = Vertex(v1);
|
||||
UVCoord tempUVA = UVCoord(uv1);
|
||||
UVCoord tempUVB = UVCoord(uv1);
|
||||
|
||||
bool changed1 = false;
|
||||
bool changed2 = false;
|
||||
|
||||
float uc0 = uv1.GetU();
|
||||
float vc0 = uv1.GetV();
|
||||
float uc1 = uv2.GetU();
|
||||
float vc1 = uv2.GetV();
|
||||
float uc2 = uv3.GetU();
|
||||
float vc2 = uv3.GetV();
|
||||
|
||||
int dx1 = (int)ceil(abs(v2.GetX() - v1.GetX()));
|
||||
int dy1 = (int)ceil(abs(v2.GetY() - v1.GetY()));
|
||||
int du1 = (int)ceil(abs(uc1 - uc0));
|
||||
int dv1 = (int)ceil(abs(vc1 - vc0));
|
||||
|
||||
int dx2 = (int)ceil(abs(v3.GetX() - v1.GetX()));
|
||||
int dy2 = (int)ceil(abs(v3.GetY() - v1.GetY()));
|
||||
int du2 = (int)ceil(abs(uc2 - uc0));
|
||||
int dv2 = (int)ceil(abs(vc2 - vc0));
|
||||
|
||||
int signx1 = (int)ceil(sgn(v2.GetX() - v1.GetX()));
|
||||
int signx2 = (int)ceil(sgn(v3.GetX() - v1.GetX()));
|
||||
int signu1 = (int)ceil(sgn(uc1 - uc0));
|
||||
int signu2 = (int)ceil(sgn(uc2 - uc0));
|
||||
|
||||
int signy1 = (int)ceil(sgn(v2.GetY() - v1.GetY()));
|
||||
int signy2 = (int)ceil(sgn(v3.GetY() - v1.GetY()));
|
||||
int signv1 = (int)ceil(sgn(vc1 - vc0));
|
||||
int signv2 = (int)ceil(sgn(vc2 - vc0));
|
||||
|
||||
if (dy1 > dx1)
|
||||
{
|
||||
int tempDx = dx1;
|
||||
dx1 = dy1;
|
||||
dy1 = tempDx;
|
||||
|
||||
int tempDu = du1;
|
||||
du1 = dv1;
|
||||
dv1 = tempDu;
|
||||
|
||||
changed1 = true;
|
||||
}
|
||||
|
||||
if (dy2 > dx2)
|
||||
{
|
||||
int tempDx = dx2;
|
||||
dx2 = dy2;
|
||||
dy2 = tempDx;
|
||||
|
||||
int tempDu = du2;
|
||||
du2 = dv2;
|
||||
dv2 = tempDu;
|
||||
|
||||
changed2 = true;
|
||||
}
|
||||
|
||||
int e1 = 2 * (int)dy1 - (int)dx1;
|
||||
int e2 = 2 * (int)dy2 - (int)dx2;
|
||||
|
||||
for (int i = 0; i <= (int)dx1; i++)
|
||||
{
|
||||
float leftEndPoint;
|
||||
float rightEndPoint;
|
||||
float leftUV;
|
||||
float rightUV;
|
||||
|
||||
if (tempA.GetX() < tempB.GetX())
|
||||
{
|
||||
leftEndPoint = tempA.GetX() - 1.0f;
|
||||
rightEndPoint = tempB.GetX() + 1.0f;
|
||||
leftUV = tempUVA.GetU();
|
||||
rightUV = tempUVB.GetU();
|
||||
}
|
||||
else
|
||||
{
|
||||
leftEndPoint = tempB.GetX() - 1.0f;
|
||||
rightEndPoint = tempA.GetX() + 1.0f;
|
||||
leftUV = tempUVB.GetU();
|
||||
rightUV = tempUVA.GetU();
|
||||
}
|
||||
|
||||
|
||||
float UCoordA = Interpolate(uv1.GetV() + i, uv1.GetU(), uv2.GetU(), uv1.GetV(), uv2.GetV());
|
||||
float UCoordB = Interpolate(uv1.GetV() + i, uv1.GetU(), uv3.GetU(), uv1.GetV(), uv3.GetV());
|
||||
|
||||
float iRedA = Lerp(v1.GetR(), v2.GetR(), (float)i / (float)dx1);
|
||||
float iRedB = Lerp(v1.GetR(), v3.GetR(), (float)i / (float)dx1);
|
||||
float iGreenA = Lerp(v1.GetG(), v2.GetG(), (float)i / (float)dx1);
|
||||
float iGreenB = Lerp(v1.GetG(), v3.GetG(), (float)i / (float)dx1);
|
||||
float iBlueA = Lerp(v1.GetB(), v2.GetB(), (float)i / (float)dx1);
|
||||
float iBlueB = Lerp(v1.GetB(), v3.GetB(), (float)i / (float)dx1);
|
||||
|
||||
int xLength = (int)ceil(rightEndPoint) - (int)ceil(leftEndPoint);
|
||||
int ci = 0;
|
||||
|
||||
for (int xi = (int)ceil(leftEndPoint); xi <= (int)ceil(rightEndPoint); xi++)
|
||||
{
|
||||
float ti = (float)ci / (float)xLength;
|
||||
float UCoordTmp = Lerp(leftUV, rightUV, ti);
|
||||
float redTmp = Lerp(iRedA, iRedB, ti) / 100;
|
||||
float greenTmp = Lerp(iGreenA, iGreenB, ti) / 100;
|
||||
float blueTmp = Lerp(iBlueA, iBlueB, ti) / 100;
|
||||
|
||||
COLORREF textureColor = model.GetTexture().GetTextureValue((int)UCoordTmp, (int)tempUVA.GetV());
|
||||
COLORREF currentColor = RGB(BoundsCheck(0, 255, (int)(GetRValue(textureColor) * redTmp)), BoundsCheck(0, 255, (int)(GetGValue(textureColor) * greenTmp)), BoundsCheck(0, 255, (int)(GetBValue(textureColor) * blueTmp)));
|
||||
|
||||
SetPixel(hDc, xi, tempA.GetYInt(), currentColor);
|
||||
ci++;
|
||||
}
|
||||
|
||||
|
||||
while (e1 >= 0)
|
||||
{
|
||||
if (changed1)
|
||||
{
|
||||
tempA.SetX((float)tempA.GetXInt() + (float)signx1);
|
||||
tempUVA.SetU((float)tempUVA.GetU() + (float)signu1);
|
||||
}
|
||||
else
|
||||
{
|
||||
tempA.SetY((float)tempA.GetYInt() + (float)signy1);
|
||||
tempUVA.SetV((float)tempUVA.GetV() + (float)signv1);
|
||||
}
|
||||
e1 = e1 - 2 * dx1;
|
||||
}
|
||||
|
||||
if (changed1)
|
||||
{
|
||||
tempA.SetY((float)tempA.GetYInt() + (float)signy1);
|
||||
tempUVA.SetV((float)tempUVA.GetV() + (float)signv1);
|
||||
}
|
||||
else
|
||||
{
|
||||
tempA.SetX((float)tempA.GetXInt() + (float)signx1);
|
||||
tempUVA.SetU((float)tempUVA.GetU() + (float)signu1);
|
||||
}
|
||||
|
||||
e1 = e1 + 2 * dy1;
|
||||
|
||||
while (tempB.GetYInt(true) != tempA.GetYInt(true))
|
||||
{
|
||||
while (e2 >= 0)
|
||||
{
|
||||
if (changed2)
|
||||
{
|
||||
tempB.SetX((float)tempB.GetXInt() + (float)signx2);
|
||||
tempUVB.SetU((float)tempUVB.GetU() + (float)signu2);
|
||||
}
|
||||
else
|
||||
{
|
||||
tempB.SetY((float)tempB.GetYInt() + (float)signy2);
|
||||
tempUVB.SetV((float)tempUVB.GetV() + (float)signv2);
|
||||
}
|
||||
e2 = e2 - 2 * dx2;
|
||||
}
|
||||
|
||||
if (changed2)
|
||||
{
|
||||
tempB.SetY((float)tempB.GetYInt() + (float)signy2);
|
||||
tempUVB.SetV((float)tempUVB.GetV() + (float)signv2);
|
||||
}
|
||||
else
|
||||
{
|
||||
tempB.SetX((float)tempB.GetXInt() + (float)signx2);
|
||||
tempUVB.SetU((float)tempUVB.GetU() + (float)signu2);
|
||||
}
|
||||
e2 = e2 + 2 * dy2;
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user