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StdDraw.cpp
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#include "StdDraw.h"
#include <cmath>
#include <vector>
void renderThreadFunc(Render& render)
{
render.show();
}
StdDraw::~StdDraw()
{
tRender.join();
}
void StdDraw::setCanvasSize()
{
setCanvasSize(DEFAULT_SIZE, DEFAULT_SIZE);
}
void StdDraw::setCanvasSize(int canvasWidth, int canvasHeight)
{
if (canvasWidth <= 0) throw new std::invalid_argument("width must be positive");
if (canvasHeight <= 0) throw new std::invalid_argument("height must be positive");
width = canvasWidth;
height = canvasHeight;
render.setCanvasSize(canvasWidth, canvasHeight);
}
double StdDraw::getPenRadius()
{
return render.viewPen().radius;
}
void StdDraw::setPenRadius()
{
setPenRadius(DEFAULT_PEN_RADIUS);
}
void StdDraw::setPenRadius(double radius)
{
validate(radius, "pen radius");
validateNonnegative(radius, "pen radius");
render.getPen().radius = radius;
}
cwt::Color StdDraw::getPenColor()
{
return cwt::getColor(render.viewPen().color.r, render.viewPen().color.g, render.viewPen().color.b);
}
void StdDraw::setPenColor()
{
setPenColor(DEFAULT_PEN_COLOR);
}
void StdDraw::init()
{
tRender = std::thread(renderThreadFunc, std::ref(render));
}
void StdDraw::draw()
{
if (!hasRenderInit)
{
init();
hasRenderInit = true;
}
}
void StdDraw::setPenColor(cwt::Color color)
{
render.getPen().color = cwt::getRgba(color);
}
void StdDraw::setPenColor(int red, int green, int blue)
{
if (red < 0 || red >= 256)
{
throw new std::invalid_argument("red must be between 0 and 255");
}
if (green < 0 || green >= 256)
{
throw new std::invalid_argument("green must be between 0 and 255");
}
if (blue < 0 || blue >= 256)
{
throw new std::invalid_argument("blue must be between 0 and 255");
}
render.getPen().color.r = red;
render.getPen().color.g = green;
render.getPen().color.b = blue;
}
cwt::Font StdDraw::getFont()
{
return render.viewFont();
}
void StdDraw::setFont()
{
setFont(DEFAULT_FONT);
}
void StdDraw::setFont(cwt::Font font)
{
render.getFont() = font;
}
void StdDraw::line(double x0, double y0, double x1, double y1)
{
validate(x0, "x0");
validate(y0, "y0");
validate(x1, "x1");
validate(y1, "y1");
render.drawLine(x0, y0, x1, y1);
draw();
}
void StdDraw::circle(double x, double y, double radius)
{
validate(x, "x");
validate(y, "y");
validate(radius, "radius");
validateNonnegative(radius, "radius");
double xs = scaleX(x);
double ys = scaleY(y);
double ws = factorX(2 * radius);
double hs = factorY(2 * radius);
if (ws <= 1 && hs <= 1)
{
pixel(x, y);
}
else
{
render.drawElipse(xs - ws / 2, ys - hs / 2, ws, hs);
}
draw();
}
void StdDraw::filledCircle(double x, double y, double radius)
{
validate(x, "x");
validate(y, "y");
validate(radius, "radius");
validateNonnegative(radius, "radius");
double xs = scaleX(x);
double ys = scaleY(y);
double ws = factorX(2 * radius);
double hs = factorY(2 * radius);
if (ws <= 1 && hs <= 1)
{
pixel(x, y);
}
else
{
render.fillElipse(xs - ws / 2, ys - hs / 2, ws, hs);
}
draw();
}
void StdDraw::arc(double x, double y, double radius, double angle1, double angle2)
{
validate(x, "x");
validate(y, "y");
validate(radius, "arc radius");
validate(angle1, "angle1");
validate(angle2, "angle2");
validateNonnegative(radius, "arc radius");
while (angle2 < angle1)
{
angle2 += 360;
}
double xs = scaleX(x);
double ys = scaleY(y);
double ws = factorX(2 * radius);
double hs = factorY(2 * radius);
if (ws <= 1 && hs <= 1)
{
pixel(x, y);
}
else
{
render.drawArc(xs - ws / 2, ys - hs / 2, ws, hs, angle1, angle2 - angle1);
}
draw();
}
void StdDraw::square(double x, double y, double halfLength)
{
validate(x, "x");
validate(y, "y");
validate(halfLength, "halfLength");
validateNonnegative(halfLength, "half length");
double xs = scaleX(x);
double ys = scaleY(y);
double ws = factorX(2 * halfLength);
double hs = factorY(2 * halfLength);
if (ws <= 1 && hs <= 1)
{
pixel(x, y);
}
else
{
render.drawRectangle(xs - ws / 2, ys - hs / 2, ws, hs);
}
draw();
}
void StdDraw::filledSquare(double x, double y, double halfLength)
{
validate(x, "x");
validate(y, "y");
validate(halfLength, "halfLength");
validateNonnegative(halfLength, "half length");
double xs = scaleX(x);
double ys = scaleY(y);
double ws = factorX(2 * halfLength);
double hs = factorY(2 * halfLength);
if (ws <= 1 && hs <= 1)
{
pixel(x, y);
}
else
{
render.fillRectangle(xs - ws / 2, ys - hs / 2, ws, hs);
}
draw();
}
void StdDraw::polygon(std::vector<double> x, std::vector<double> y)
{
if (x.empty())
{
return;
}
size_t sizeOfArrayX = x.size();
size_t sizeOfArrayY = y.size();
for (size_t i = 0; i < sizeOfArrayX; i++)
{
validate(x[i], "x[" + std::to_string(i) + "]");
}
for (size_t i = 0; i < sizeOfArrayY; i++)
{
validate(y[i], "y[" + std::to_string(i) + "]");
}
if (sizeOfArrayX != sizeOfArrayY)
{
throw std::invalid_argument("arrays must be of the same length");
}
// Scale x and y
for (size_t i = 0; i < sizeOfArrayX; i++)
{
x[i] = scaleX(x[i]);
y[i] = scaleY(y[i]);
}
render.drawPolygon(x, y);
draw();
}
void StdDraw::filledPolygon(std::vector<double> x, std::vector<double> y)
{
if (x.empty())
{
return;
}
size_t sizeOfArrayX = x.size();
size_t sizeOfArrayY = y.size();
for (size_t i = 0; i < sizeOfArrayX; i++)
{
validate(x[i], "x[" + std::to_string(i) + "]");
}
for (size_t i = 0; i < sizeOfArrayY; i++)
{
validate(y[i], "y[" + std::to_string(i) + "]");
}
if (sizeOfArrayX != sizeOfArrayY)
{
throw std::invalid_argument("arrays must be of the same length");
}
// Scale x and y
for (size_t i = 0; i < sizeOfArrayX; i++)
{
x[i] = scaleX(x[i]);
y[i] = scaleY(y[i]);
}
render.fillPolygon(x, y);
draw();
}
void StdDraw::text(double x, double y, std::wstring text)
{
validate(x, "x");
validate(y, "y");
double xs = scaleX(x);
double ys = scaleY(y);
int ws = 0;
int hs = 0;
render.GetTextExtent(text.c_str(), (int)text.size(), ws, hs);
render.drawString(text.c_str(), (double)(xs - ws / 2.0), (double)(ys - hs));
draw();
}
void StdDraw::test(int argc, char* argv[])
{
StdDraw& stdDraw = StdDraw::getInstance();
stdDraw.square(0.2, 0.8, 0.1);
stdDraw.filledSquare(0.8, 0.8, 0.2);
stdDraw.circle(0.8, 0.2, 0.2);
//
stdDraw.setPenColor(cwt::Color::BOOK_RED);
stdDraw.setPenRadius(0.02);
stdDraw.arc(0.8, 0.2, 0.1, 200, 45);
// draw a blue diamond
stdDraw.setPenRadius();
stdDraw.setPenColor(cwt::Color::BOOK_BLUE);
std::vector<double> x = { 0.1, 0.2, 0.3, 0.2 };
std::vector<double> y = { 0.2, 0.3, 0.2, 0.1 };
stdDraw.filledPolygon(x, y);
// text
stdDraw.setPenColor(cwt::Color::BLACK);
stdDraw.text(0.2, 0.5, L"black text");
stdDraw.setPenColor(cwt::Color::WHITE);
stdDraw.text(0.8, 0.8, L"white text");
}
void StdDraw::validate(double x, const std::string& name)
{
if (std::isnan(x))
{
throw std::invalid_argument(name + " is NaN");
}
if (!std::isfinite(x))
{
throw std::invalid_argument(name + " is infinite");
}
}
void StdDraw::validateNonnegative(double x, const std::string& name)
{
if (x < 0.0)
{
throw std::invalid_argument(name + " negative");
}
}
void StdDraw::pixel(double x, double y)
{
validate(x, "x");
validate(y, "y");
render.fillRectangle((int)std::round(scaleX(x)), (int)std::round(scaleY(y)), 1, 1);
draw();
}