97 lines
2.8 KiB
C++
97 lines
2.8 KiB
C++
#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());
|
|
} |