104 lines
2.1 KiB
C++
104 lines
2.1 KiB
C++
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#include "Runtime.h"
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#include <cairo/cairo.h>
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#include <string>
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class Turtle {
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public:
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Turtle(int sizeX, int sizeY) {
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surface = cairo_image_surface_create(CAIRO_FORMAT_RGB24, sizeX, sizeY);
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context = cairo_create(surface);
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reset();
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}
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virtual ~Turtle() {
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cairo_destroy(context);
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cairo_surface_destroy(surface);
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}
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void reset() {
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setColor(1, 1, 1);
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paint();
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setLineWidth(3);
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setColor(1, 0, 0);
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moveTo(0, 0);
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}
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void setColor(double r, double g, double b) {
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cairo_set_source_rgb(context, r, g, b);
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}
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void setLineWidth(double size) {
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cairo_set_line_width(context, size);
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}
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void paint() {
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cairo_paint(context);
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}
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void moveTo(double x, double y) {
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cairo_move_to(context, x, y);
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}
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void rectangleTo(double width, double height) {
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double baseX;
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double baseY;
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cairo_get_current_point(context, &baseX, &baseY);
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cairo_rectangle(context, baseX, baseY, width, height);
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cairo_fill(context);
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moveTo(baseX, baseY);
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}
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void lineTo(double x, double y) {
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cairo_line_to(context, x, y);
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cairo_stroke(context);
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moveTo(x, y);
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}
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void save(char const* filename) {
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cairo_surface_write_to_png(surface, filename);
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}
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void save(std::string const& filename) {
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save(filename.c_str());
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}
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private:
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cairo_surface_t *surface;
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cairo_t *context;
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};
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static Turtle *turtle = 0;
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extern "C" {
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void cofandina(Monicelli_Int x, Monicelli_Int y) {
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if (turtle != 0) delete turtle;
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turtle = new Turtle(x, y);
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}
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void pulitina(Monicelli_Double r, Monicelli_Double g, Monicelli_Double b) {
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turtle->setColor(r, g, b);
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}
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void pastene(Monicelli_Double size) {
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turtle->setLineWidth(size);
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}
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void muovi(Monicelli_Double x, Monicelli_Double y) {
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turtle->moveTo(x, y);
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}
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void ispettore(Monicelli_Double x, Monicelli_Double y) {
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turtle->lineTo(x, y);
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}
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void barilotto() {
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turtle->save("barilotto.png");
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}
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} // extern
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