tugas2

#include <GL/glut.h>
#include <iostream>
#include <vector>

// DEFINITIONS //
template <typename T>
struct Vec2 {
	T x;
	T y;

	inline Vec2<T>(T initX, T initY) : x(initX), y(initY) {}
};
typedef Vec2<int> Point;

template <typename T>
struct Vec3 {
	T r;
	T g;
	T b;

	inline Vec3<T>(T iR, T iG, T iB) : r(iR), g(iG), b(iB) {}
	inline Vec3<T>(T iS) : r(iS), g(iS), b(iS) {}
	inline Vec3<T>() : r(0), g(0), b(0) {}
};
typedef Vec3<unsigned char> Color;

#define colorUnpack(c) c.r, c.g, c.b

typedef struct tShapeProperties {
	Color color;
	unsigned int mode;

	tShapeProperties(Color initColor, unsigned int initMode): color(initColor), mode(initMode) {}
} ShapeProperties;

struct Template {
	ShapeProperties kotak_kiri;
	ShapeProperties segitiga;
	ShapeProperties kotak_kanan;
};

//-------------//

#define TEMPLATE_NORMAL 0;
#define TEMPLATE_WHITE 1;
#define TEMPLATE_LINES 2;

Template shapeTemplate[3] = {
	Template{
		ShapeProperties(Color(0, 0, 255), GL_POLYGON),
		ShapeProperties(Color(255, 0, 0), GL_POLYGON),
		ShapeProperties(Color(0, 255, 0), GL_POLYGON)
	},
	Template{
		ShapeProperties(Color(255, 255, 255), GL_POLYGON),
		ShapeProperties(Color(255, 255, 255), GL_POLYGON),
		ShapeProperties(Color(255, 255, 255), GL_POLYGON)
	},
	Template{
		ShapeProperties(Color(255, 255, 255), GL_LINE_LOOP),
		ShapeProperties(Color(255, 255, 255), GL_LINE_LOOP),
		ShapeProperties(Color(255, 255, 255), GL_LINE_LOOP)
	},
};

unsigned int currentTemplate = TEMPLATE_NORMAL;
std::vector<Point> *points = new std::vector<Point>;

void render(void) {
	glClear(GL_COLOR_BUFFER_BIT);

	// Gambar Kotak Kiri
	glColor3f(colorUnpack(shapeTemplate[currentTemplate].kotak_kiri.color));
	glBegin(shapeTemplate[currentTemplate].kotak_kiri.mode);
		glVertex2f(40, 175);
		glVertex2f(40, 300);
		glVertex2f(125, 300);
		glVertex2f(125, 175);
	glEnd();

	// Segitiga
	glColor3f(colorUnpack(shapeTemplate[currentTemplate].segitiga.color));
	glBegin(shapeTemplate[currentTemplate].segitiga.mode);
		glVertex2f(170, 300);
		glVertex2f(300, 300);
		glVertex2f(230, 175);
	glEnd();

	// Gambar Kotak Kanan
	glColor3f(colorUnpack(shapeTemplate[currentTemplate].kotak_kanan.color));
	glBegin(shapeTemplate[currentTemplate].kotak_kanan.mode);
		glVertex2f(40 + 310, 175);
		glVertex2f(40 + 310, 300);
		glVertex2f(125 + 310, 300);
		glVertex2f(125 + 310, 175);
	glEnd();


	// Gambar Titik
	glColor3f(1, 1, 1);
	glPointSize(5);
	glBegin(GL_POINTS);
	for (unsigned int i = 0; i < points->size(); i++) {
		glVertex2f(points->at(i).x, points->at(i).y);
	}
	glEnd();

	glFlush();
}

void onKeyboardDownEvent(unsigned char key, int mouseX, int mouseY) {
	if (key == 'a' || key == 'A') { // Normal
		currentTemplate = TEMPLATE_NORMAL;
	}
	else if (key == 's' || key == 'S') { // White
		currentTemplate = TEMPLATE_WHITE;
	}
	else if (key == 'd' || key == 'D') { // LINES
		currentTemplate = TEMPLATE_LINES;
	}

	glutPostRedisplay();
}

void onMouseClick(int button, int buttonState, int mouseX, int mouseY) {
	if (button == 0 && buttonState == 0) {
		points->push_back(Point(mouseX, mouseY));
	}

	glutPostRedisplay();
}

int main(int argc, char** argv) {
	glutInit(&argc, argv);
	glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
	glutInitWindowSize(500, 500);
	glutCreateWindow("Coba Title");

	glutDisplayFunc(render);
	glutKeyboardFunc(onKeyboardDownEvent);
	glutMouseFunc(onMouseClick);

	gluOrtho2D(0, 500, 500, 0);
	glClearColor(0, 0, 0, 1);

	glEnable(GL_POINT_SMOOTH);
	glHint(GL_POINT_SMOOTH_HINT, GL_NICEST);

	glutMainLoop();

	return 0;
}