simple-draw/src/DrawRender.cpp

275 lines
8.1 KiB
C++

//
// Created by shaohuatong on 28.11.19.
//
#include "DrawRender.hpp"
#include <algorithm>
DrawRender::DrawRender(int windowWidth, int windowHeight, vkvm::Color defaultBackgroundColor, vkvm::Color penColor, int penWidth)
: backgroundColor(defaultBackgroundColor), penColor(penColor) {
this-> windowWidth = windowWidth;
this-> windowHeight = windowHeight;
this-> penWidth = penWidth;
}
void DrawRender::graphicsUpdate(int type) {
if(type == CIRCLE || type == SQUARE) {
std::vector<std::vector<bool>> graphics = circleAndSquareCreator(type);
translateToSharedMemory(graphics, startX, startY);
}
else if(type == RECTANGLE) {
std::vector<std::vector<bool>> graphics = rectangleCreator();
translateToSharedMemory(graphics, startX, startY);
}
}
void DrawRender::brushUpdate(vkvm::Coordinates mousePosition) {
std::vector<std::vector<bool>> brush = brushCreator(mousePosition);
translateToSharedMemory(brush, startX, startY);
}
void DrawRender::clear() {
int x, y;
for(y = 0; y < windowHeight; y++) {
for(x = 0; x < windowWidth; x++) {
vkvm::setPixel(x, y, backgroundColor);
}
}
}
std::vector<std::vector<bool>> DrawRender::rectangleCreator() {
if(painting == true)
clearToSharedMemory(oldGraphics, startX, startY);
int x_draw = 0;
int y_draw = 0;
std::vector<std::vector<bool>> rectangle;
length = abs(mouseLeftDownPosition.x - mousePosition.x);
width = abs(mouseLeftDownPosition.y - mousePosition.y);
vkvm::Coordinates uperLeft;
vkvm::Coordinates bottomRight;
uperLeft.x = min(mouseLeftDownPosition.x, mousePosition.x);
uperLeft.y = min(mouseLeftDownPosition.y, mousePosition.y);
bottomRight.x = max(mouseLeftDownPosition.x, mousePosition.x);
bottomRight.y = max(mouseLeftDownPosition.y, mousePosition.y);
rectangle.resize(width);
for(y_draw = 0; y_draw < width; y_draw++) {
rectangle[y_draw].resize(length);
for(x_draw = 0; x_draw < length; x_draw++) {
if((x_draw >= 0 && x_draw <= penWidth) || (y_draw >= 0 && y_draw <= penWidth)
|| (x_draw <= length && x_draw >= length - penWidth)
|| (y_draw <= width && y_draw >= width - penWidth)) {
rectangle[y_draw][x_draw] = true;
}
}
}
oldGraphics.resize(width);
for(y_draw = 0; y_draw < width; y_draw++) {
oldGraphics[y_draw].resize(length);
for(x_draw = 0; x_draw < length; x_draw++) {
oldGraphics[y_draw][x_draw] = true;
}
}
painting = true;
startX = uperLeft.x;
startY = uperLeft.y;
return rectangle;
}
std::vector<std::vector<bool>> DrawRender::circleAndSquareCreator(int type) {
if(painting == true)
clearToSharedMemory(oldGraphics, startX, startY);
std::vector<std::vector<bool>> circle;
int x_draw = 0;
int y_draw = 0;
int distance = 0;
radius = getDistance(getMouseLeftDownPosition(), getMousePostion()) / 2;
vkvm::Coordinates middlePosition;
middlePosition.x = (mousePosition.x + mouseLeftDownPosition.x) / 2;
middlePosition.y = (mousePosition.y + mouseLeftDownPosition.y) / 2;
vkvm::Coordinates uperLeft;
vkvm::Coordinates bottomRight;
uperLeft.x = middlePosition.x - radius;
uperLeft.y = middlePosition.y - radius;
bottomRight.x = middlePosition.x + radius;
bottomRight.y = middlePosition.y + radius;
vkvm::Coordinates temp;
circle.resize(2 * radius);
for(y_draw = 0; y_draw < 2 * radius; y_draw++) {
circle[y_draw].resize(2 * radius);
for(x_draw = 0; x_draw < 2 * radius; x_draw++) {
if(type == CIRCLE) {
temp.x = uperLeft.x + x_draw;
temp.y = uperLeft.y + y_draw;
distance = squareOfDistance(temp, middlePosition);
if( distance < (radius * radius) && distance > ((radius - penWidth) * (radius - penWidth))) {
circle[y_draw][x_draw] = true;
}
}
if(type == SQUARE) {
if((x_draw >= 0 && x_draw <= penWidth) || (y_draw >= 0 && y_draw <= penWidth)
|| (x_draw <= 2 * radius && x_draw >= 2 * radius - penWidth)
|| (y_draw <= 2 * radius && y_draw >= 2 * radius - penWidth)) {
circle[y_draw][x_draw] = true;
}
}
}
}
oldGraphics.resize(2 * radius);
for(y_draw = 0; y_draw < 2 * radius; y_draw++) {
oldGraphics[y_draw].resize(2 * radius);
for(x_draw = 0; x_draw < 2 * radius; x_draw++) {
oldGraphics[y_draw][x_draw] = true;
}
}
painting = true;
startX = uperLeft.x;
startY = uperLeft.y;
return circle;
}
std::vector<std::vector<bool>> DrawRender::brushCreator(vkvm::Coordinates mousePosition) {
std::vector<std::vector<bool>> circleBrush;
int x_draw = 0;
int y_draw = 0;
int distance = 0;
radius = penWidth;
vkvm::Coordinates uperLeft;
vkvm::Coordinates bottomRight;
uperLeft.x = mousePosition.x - radius;
uperLeft.y = mousePosition.y - radius;
bottomRight.x = mousePosition.x + radius;
bottomRight.y = mousePosition.y + radius;
vkvm::Coordinates temp;
circleBrush.resize(2 * radius);
for(y_draw = 0; y_draw < 2 * radius; y_draw++) {
circleBrush[y_draw].resize(2 * radius);
for(x_draw = 0; x_draw < 2 * radius; x_draw++) {
temp.x = uperLeft.x + x_draw;
temp.y = uperLeft.y + y_draw;
distance = squareOfDistance(temp, mousePosition);
if( distance < (radius * radius)) {
circleBrush[y_draw][x_draw] = true;
}
}
}
startX = uperLeft.x;
startY = uperLeft.y;
return circleBrush;
}
void DrawRender::translateToSharedMemory(std::vector<std::vector<bool>> graphics, int startX, int startY) {
int x, y;
int currentX = startX;
int currentY = startY;
for(y = 0; y < graphics.size(); y++) {
for(x = 0; x < graphics[y].size(); x++) {
if(graphics[y][x]) {
vkvm::setPixel(currentX, currentY, penColor);
}
currentX++;
}
currentX = startX;
currentY++;
}
}
void DrawRender::clearToSharedMemory(std::vector<std::vector<bool>> graphics, int startX, int startY) {
int x, y;
int currentX = startX;
int currentY = startY;
for(y = 0; y < graphics.size(); y++) {
for(x = 0; x < graphics[y].size(); x++) {
if(graphics[y][x]) {
vkvm::setPixel(currentX, currentY, backgroundColor);
}
currentX++;
}
currentX = startX;
currentY++;
}
}
int DrawRender::squareOfDistance(vkvm::Coordinates x, vkvm::Coordinates y) {
return (x.x - y.x) * (x.x - y.x) + (x.y - y.y) * (x.y - y.y);
}
int DrawRender::getDistance(vkvm::Coordinates x, vkvm::Coordinates y) {
return (int)floor(sqrt(squareOfDistance(x, y)));
}
int DrawRender::min(int x, int y) {
if(x <= y)
return x;
return y;
}
int DrawRender::max(int x, int y) {
if(x<=y)
return y;
return x;
}
vkvm::Coordinates DrawRender::getMouseLeftDownPosition() {
return mouseLeftDownPosition;
}
void DrawRender::setMouseLeftDownPostion(vkvm::Coordinates newMousePosition) {
mouseLeftDownPosition = newMousePosition;
}
vkvm::Coordinates DrawRender::getMousePostion() {
return mousePosition;
}
void DrawRender::setMousePostion(vkvm::Coordinates newMousePosition) {
mousePosition = newMousePosition;
}
void DrawRender::setKeyCode(vkvm::KeyCode newKeyCode) {
keyCode = newKeyCode;
}
vkvm::KeyCode DrawRender::getKeyCode() {
return keyCode;
}
void DrawRender::setTurnOnBrush(bool newTurnOnBrush) {
turnOnBrush = newTurnOnBrush;
}
bool DrawRender::getTurnOnBrush() {
return turnOnBrush;
}
int DrawRender::getRadius() {
return radius;
}
bool DrawRender::getMouseDown() {
return mouseDown;
}
void DrawRender::setMouseDown(bool isMouseDown) {
mouseDown = isMouseDown;
}
bool DrawRender::getPainting() {
return painting;
}
void DrawRender::setPainting(bool isPainting) {
painting = isPainting;
}