Initial Upload Week 4 [19/10]

Rasteriser.cpp

@@ -0,0 +1,97 @@
+#include "Rasteriser.h"
+#include <cmath>
+
+using namespace std;
+
+Rasteriser app;
+
+bool Rasteriser::Initialise()
+{
+	//_vertexArray.push_back(Vertex(175, 175, 1));
+	//_vertexArray.push_back(Vertex(225, 175, 1));
+	//_vertexArray.push_back(Vertex(225, 225, 1));
+	//_vertexArray.push_back(Vertex(175, 225, 1));	
+
+	_vertexArray.push_back(Vertex(150, 200, 1));
+	_vertexArray.push_back(Vertex(187.5f, 187.5f, 1));
+	_vertexArray.push_back(Vertex(200, 150, 1));
+	_vertexArray.push_back(Vertex(212.5f, 187.5f, 1));
+	_vertexArray.push_back(Vertex(250, 200, 1));
+	_vertexArray.push_back(Vertex(212.5f, 212.5f, 1));
+	_vertexArray.push_back(Vertex(200, 250, 1));
+	_vertexArray.push_back(Vertex(187.5, 212.5f, 1));
+	
+	return true;
+}
+
+void Rasteriser::Update(const Bitmap& bitmap)
+{
+	for (int i = 0; i < _vertexArray.size(); i++)	{		
+		_vertexArray[i] = Translate(_vertexArray[i], 2, 0);
+		_vertexArray[i] = Rotate(_vertexArray[i], 1);
+		_vertexArray[i] = Scale(_vertexArray[i], 1.001f, 1.001f);
+	}
+	
+}
+
+void Rasteriser::Render(const Bitmap& bitmap)
+{		
+	bitmap.Clear(RGB(255, 255, 255));	
+	SelectObject(bitmap.GetDC(), GetStockObject(DC_BRUSH));
+	//DrawSquare(bitmap.GetDC(), _vertexArray);
+	DrawShape(bitmap.GetDC(), _vertexArray);
+}
+
+Vertex Rasteriser::Translate(const Vertex vertexIn, const float moveXBy, const float moveYBy)
+{	
+	Matrix translationMatrix = Matrix({ 1, 0, moveXBy, 0, 1, moveYBy, 0, 0, 1 });
+	return translationMatrix * vertexIn;
+}
+
+Vertex Rasteriser::Scale(const Vertex vertexIn, const float scaleXBy, const float scaleYBy)
+{
+	Matrix scaleFactorMatrix = Matrix({ scaleXBy, 0, 0, 0, scaleYBy, 0, 0, 0, 1 });	
+	return scaleFactorMatrix * vertexIn;
+}
+
+Vertex Rasteriser::Rotate(const Vertex vertexIn, const float rotationDegrees)
+{
+	float rotationRadian = DegreesToRadians(rotationDegrees);
+	Matrix rotationFactorMatrix = Matrix({ cos(rotationRadian), -sin(rotationRadian), 0, sin(rotationRadian), cos(rotationRadian), 0, 0, 0, 1});
+	return rotationFactorMatrix * vertexIn;
+}
+
+float Rasteriser::DegreesToRadians(const float degrees)
+{
+	return (degrees * _PI) / 180;
+}
+
+void Rasteriser::DrawSquare(HDC hDc, const vector<Vertex> verticies)
+{		
+	POINT pointArray[4];
+	for (int i = 0; i < 4; i++)
+	{
+		pointArray[i].x = (long) verticies[i].GetX();
+		pointArray[i].y = (long) verticies[i].GetY();
+	}
+	
+	SetDCBrushColor(hDc, RGB(255, 0, 255));
+	SetDCPenColor(hDc, RGB(0, 0, 255));
+	Polygon(hDc, pointArray, 4);
+}
+
+void Rasteriser::DrawShape(HDC hDc, const vector<Vertex> verticies)
+{	
+	vector<POINT> pointArray;
+	for (int i = 0; i < verticies.size(); i++)
+	{
+		POINT newPoint;
+		newPoint.x = (long)verticies[i].GetX();
+		newPoint.y = (long)verticies[i].GetY();
+		pointArray.push_back(newPoint);
+	}
+
+	SetDCBrushColor(hDc, RGB(rand() % 256, rand() % 256, rand() % 256));
+	SetDCPenColor(hDc, RGB(rand() % 256, rand() % 256, rand() % 256));
+	Polygon(hDc, pointArray.data(), (int) verticies.size());
+}