After C#, learned an easy way to write this cairo sh!t without reinventing fourteen wheels

logo.vala

using Cairo;
public class Main : GLib.Object {
	public static void Triangle1p1() {
		// Create a context:
		Cairo.SvgSurface triangle_surface_1p2 = new Cairo.SvgSurface ("triangle1p1.svg", 421, 410);

		Cairo.Context triangle_context_1p2 = new Cairo.Context (triangle_surface_1p2);
		Cairo.Context triangle_context_1p3 = new Cairo.Context (triangle_surface_1p2);
		Cairo.Context triangle_context_1p4 = new Cairo.Context (triangle_surface_1p2);
		Cairo.Context triangle_context_1p5 = new Cairo.Context (triangle_surface_1p2);

		triangle_context_1p2.set_line_width(2.5);
		triangle_context_1p2.save();

		// Triangle 1
		triangle_context_1p2.set_source_rgba (0.7, 0.20, 0.17, 0.8);
		triangle_context_1p2.scale(1.0, 1.0);
		triangle_context_1p2.line_to (143, 39);
		triangle_context_1p2.line_to (198, 176);
		triangle_context_1p2.line_to (23, 281);
		triangle_context_1p2.close_path ();

		triangle_context_1p2.fill_preserve();
		triangle_context_1p2.restore();
		triangle_context_1p2.set_source_rgba(0.98, 0.38, 0.09, 0.8);
		triangle_context_1p2.stroke();

		triangle_context_1p3.set_line_width(2.5);
		triangle_context_1p3.save();

		// Triangle 2:
		triangle_context_1p3.set_source_rgba (0, 0.63, 0.90, 0.8);
		triangle_context_1p3.scale(1.0, 1.0);
		triangle_context_1p3.line_to (275, 44);
		triangle_context_1p3.line_to (377, 102);
		triangle_context_1p3.line_to (100, 118);
		triangle_context_1p3.close_path ();

		triangle_context_1p3.fill_preserve();
		triangle_context_1p3.restore();	
		triangle_context_1p3.set_source_rgba(0, 0.99, 0.93, 0.8);
		triangle_context_1p3.stroke();
		
		triangle_context_1p4.set_line_width(2.5);
		triangle_context_1p4.save();

		// Triangle 5:
		triangle_context_1p4.set_source_rgba (0, 0.63, 0.90, 0.8);
		triangle_context_1p4.scale(1.0, 1.0);
		triangle_context_1p4.line_to (244, 314);
		triangle_context_1p4.line_to (148, 375);
		triangle_context_1p4.line_to (70, 184);
		triangle_context_1p4.close_path ();

		triangle_context_1p4.fill_preserve();
		triangle_context_1p4.restore();
		triangle_context_1p4.set_source_rgba(0, 0.99, 0.93, 0.8);
		triangle_context_1p4.stroke();

		triangle_context_1p5.set_line_width(2.5);
		triangle_context_1p5.save();
	}

	public static void Triangle1p2() {
		// Create a context:
		Cairo.SvgSurface triangle_surface_1p2 = new Cairo.SvgSurface ("triangle1p2.svg", 421, 410);

		Cairo.Context triangle_context_1p2 = new Cairo.Context (triangle_surface_1p2);
		Cairo.Context triangle_context_1p3 = new Cairo.Context (triangle_surface_1p2);
		Cairo.Context triangle_context_1p4 = new Cairo.Context (triangle_surface_1p2);
		Cairo.Context triangle_context_1p5 = new Cairo.Context (triangle_surface_1p2);
		Cairo.Context triangle_context_1p6 = new Cairo.Context (triangle_surface_1p2);		


		triangle_context_1p2.set_line_width(2.5);
		triangle_context_1p2.save();

		// Triangle 1
		triangle_context_1p2.set_source_rgba (0.7, 0.20, 0.17, 0.8);
		triangle_context_1p2.scale(1.0, 1.0);
		triangle_context_1p2.line_to (143, 39);
		triangle_context_1p2.line_to (198, 176);
		triangle_context_1p2.line_to (23, 281);
		triangle_context_1p2.close_path ();

		triangle_context_1p2.fill_preserve();
		triangle_context_1p2.restore();
		triangle_context_1p2.set_source_rgba(0.98, 0.38, 0.09, 0.8);
		triangle_context_1p2.stroke();

		triangle_context_1p3.set_line_width(2.5);
		triangle_context_1p3.save();

		// Triangle 2:
		triangle_context_1p3.set_source_rgba (0, 0.63, 0.90, 0.8);
		triangle_context_1p3.scale(1.0, 1.0);
		triangle_context_1p3.line_to (275, 44);
		triangle_context_1p3.line_to (377, 102);
		triangle_context_1p3.line_to (100, 118);
		triangle_context_1p3.close_path ();

		triangle_context_1p3.fill_preserve();
		triangle_context_1p3.restore();	
		triangle_context_1p3.set_source_rgba(0, 0.99, 0.93, 0.8);
		triangle_context_1p3.stroke();
		
		triangle_context_1p4.set_line_width(2.5);
		triangle_context_1p4.save();

		// Triangle 5:
		triangle_context_1p4.set_source_rgba (0, 0.63, 0.90, 0.8);
		triangle_context_1p4.scale(1.0, 1.0);
		triangle_context_1p4.line_to (244, 314);
		triangle_context_1p4.line_to (148, 375);
		triangle_context_1p4.line_to (70, 184);
		triangle_context_1p4.close_path ();

		triangle_context_1p4.fill_preserve();
		triangle_context_1p4.restore();
		triangle_context_1p4.set_source_rgba(0, 0.99, 0.93, 0.8);
		triangle_context_1p4.stroke();

		triangle_context_1p5.set_line_width(2.5);
		triangle_context_1p5.save();

		// Triangle 3:
		triangle_context_1p5.set_source_rgba (0.78, 0.38, 0.09, 0.8);
		triangle_context_1p5.scale(1.0, 1.0);
		triangle_context_1p5.line_to (363, 190);
		triangle_context_1p5.line_to (250, 126);
		triangle_context_1p5.line_to (305, 26);
		triangle_context_1p5.close_path ();

		triangle_context_1p5.fill_preserve();
		triangle_context_1p5.restore();
		triangle_context_1p5.set_source_rgba(0.98, 0.20, 0.17, 0.8);
		triangle_context_1p5.stroke();

		triangle_context_1p6.set_line_width(2.5);
		triangle_context_1p6.save();

		// Triangle 6:
		triangle_context_1p6.set_source_rgba (0.78, 0.38, 0.09, 0.8);
		triangle_context_1p6.scale(1.0, 1.0);
		triangle_context_1p6.line_to (195, 260);
		triangle_context_1p6.line_to (333, 356);
		triangle_context_1p6.line_to (128, 330);
		triangle_context_1p6.close_path ();

		triangle_context_1p6.fill_preserve();
		triangle_context_1p6.restore();
		triangle_context_1p6.set_source_rgba(0.98, 0.20, 0.17, 0.8);
		triangle_context_1p6.stroke();
	}

	public static void Triangle1p3() {
		// Create a context:
		Cairo.SvgSurface triangle_surface_1p2 = new Cairo.SvgSurface ("triangle1p3.svg", 421, 410);

		Cairo.Context triangle_context_1p2 = new Cairo.Context (triangle_surface_1p2);
		Cairo.Context triangle_context_1p3 = new Cairo.Context (triangle_surface_1p2);
		Cairo.Context triangle_context_1p4 = new Cairo.Context (triangle_surface_1p2);
		Cairo.Context triangle_context_1p5 = new Cairo.Context (triangle_surface_1p2);
		Cairo.Context triangle_context_1p6 = new Cairo.Context (triangle_surface_1p2);		
		
		triangle_context_1p2.set_line_width(2.5);
		triangle_context_1p2.save();

		// Triangle 1
		triangle_context_1p2.set_source_rgba (0.7, 0.20, 0.17, 0.8);
		triangle_context_1p2.scale(1.0, 1.0);
		triangle_context_1p2.line_to (143, 39);
		triangle_context_1p2.line_to (198, 176);
		triangle_context_1p2.line_to (23, 281);
		triangle_context_1p2.close_path ();

		triangle_context_1p2.fill_preserve();
		triangle_context_1p2.restore();
		triangle_context_1p2.set_source_rgba(0.98, 0.38, 0.09, 0.8);
		triangle_context_1p2.stroke();

		triangle_context_1p3.set_line_width(2.5);
		triangle_context_1p3.save();

		// Triangle 2:
		triangle_context_1p3.set_source_rgba (0, 0.63, 0.90, 0.8);
		triangle_context_1p3.scale(1.0, 1.0);
		triangle_context_1p3.line_to (275, 44);
		triangle_context_1p3.line_to (377, 102);
		triangle_context_1p3.line_to (100, 118);
		triangle_context_1p3.close_path ();

		triangle_context_1p3.fill_preserve();
		triangle_context_1p3.restore();	
		triangle_context_1p3.set_source_rgba(0, 0.99, 0.93, 0.8);
		triangle_context_1p3.stroke();
		
		triangle_context_1p4.set_line_width(2.5);
		triangle_context_1p4.save();

		// Triangle 5:
		triangle_context_1p4.set_source_rgba (0, 0.63, 0.90, 0.8);
		triangle_context_1p4.scale(1.0, 1.0);
		triangle_context_1p4.line_to (244, 314);
		triangle_context_1p4.line_to (148, 375);
		triangle_context_1p4.line_to (70, 184);
		triangle_context_1p4.close_path ();

		triangle_context_1p4.fill_preserve();
		triangle_context_1p4.restore();
		triangle_context_1p4.set_source_rgba(0, 0.99, 0.93, 0.8);
		triangle_context_1p4.stroke();

		triangle_context_1p5.set_line_width(2.5);
		triangle_context_1p5.save();

		// Triangle 3:
		triangle_context_1p5.set_source_rgba (0.78, 0.38, 0.09, 0.8);
		triangle_context_1p5.scale(1.0, 1.0);
		triangle_context_1p5.line_to (363, 190);
		triangle_context_1p5.line_to (250, 126);
		triangle_context_1p5.line_to (305, 26);
		triangle_context_1p5.close_path ();

		triangle_context_1p5.fill_preserve();
		triangle_context_1p5.restore();
		triangle_context_1p5.set_source_rgba(0.98, 0.20, 0.17, 0.8);
		triangle_context_1p5.stroke();

		triangle_context_1p6.set_line_width(2.5);
		triangle_context_1p6.save();

		// Triangle 6:
		triangle_context_1p6.set_source_rgba (0.78, 0.38, 0.09, 0.8);
		triangle_context_1p6.scale(1.0, 1.0);
		triangle_context_1p6.line_to (195, 260);
		triangle_context_1p6.line_to (333, 356);
		triangle_context_1p6.line_to (128, 330);
		triangle_context_1p6.close_path ();

		triangle_context_1p6.fill_preserve();
		triangle_context_1p6.restore();
		triangle_context_1p6.set_source_rgba(0.98, 0.20, 0.17, 0.8);
		triangle_context_1p6.stroke();
	}
					
	public static void Triangle1() {
		SvgSurface triangle_surface_1 = new Cairo.SvgSurface ("triangle1.svg", 421, 410);
		Context triangle_context_1 = new Cairo.Context (triangle_surface_1);

		triangle_context_1.set_line_width(2.5);
		triangle_context_1.save();

		// Triangle 1
		triangle_context_1.set_source_rgba (0.7, 0.20, 0.17, 0.8);
		triangle_context_1.scale(1.0, 1.0);
		triangle_context_1.line_to (143, 39);
		triangle_context_1.line_to (198, 176);
		triangle_context_1.line_to (23, 281);
		triangle_context_1.close_path ();

		triangle_context_1.fill_preserve();
		triangle_context_1.restore();
		triangle_context_1.set_source_rgba(0.98, 0.38, 0.09, 0.8);
		triangle_context_1.stroke();
	}

	public static void Triangle2() {
		SvgSurface triangle_surface_2 = new Cairo.SvgSurface ("triangle2.svg", 421, 410);
		Context triangle_context_2 = new Cairo.Context (triangle_surface_2);

		triangle_context_2.set_line_width(2.5);
		triangle_context_2.save();

		// Triangle 2:
		triangle_context_2.set_source_rgba (0, 0.63, 0.90, 0.8);
		triangle_context_2.scale(1.0, 1.0);
		triangle_context_2.line_to (275, 44);
		triangle_context_2.line_to (377, 102);
		triangle_context_2.line_to (100, 118);
		triangle_context_2.close_path ();

		triangle_context_2.fill_preserve();
		triangle_context_2.restore();
		triangle_context_2.set_source_rgba(0, 0.99, 0.93, 0.8);
		triangle_context_2.stroke();

		triangle_context_2.set_line_width(2.5);
		triangle_context_2.save();
	}
		
	public static void Triangle3() {
		SvgSurface triangle_surface_3 = new Cairo.SvgSurface ("triangle3.svg", 421, 410);
		Context triangle_context_3 = new Cairo.Context (triangle_surface_3);

		triangle_context_3.set_line_width(2.5);
		triangle_context_3.save();

		// Triangle 3:
		triangle_context_3.set_source_rgba (0.78, 0.38, 0.09, 0.8);
		triangle_context_3.scale(1.0, 1.0);
		triangle_context_3.line_to (363, 190);
		triangle_context_3.line_to (250, 126);
		triangle_context_3.line_to (305, 26);
		triangle_context_3.close_path ();

		triangle_context_3.fill_preserve();
		triangle_context_3.restore();
		triangle_context_3.set_source_rgba(0.98, 0.20, 0.17, 0.8);
		triangle_context_3.stroke();
	}	
	
	public static void Triangle4() {
		SvgSurface triangle_surface_4 = new Cairo.SvgSurface ("triangle4.svg", 421, 410);
		Context triangle_context_4 = new Cairo.Context (triangle_surface_4);

		triangle_context_4.set_line_width(2.5);
		triangle_context_4.save();

		// Triangle 4:
		triangle_context_4.set_source_rgba (0.19, 0.80, 0.19, 0.8);
		triangle_context_4.scale(1.0, 1.0);
		triangle_context_4.line_to (376, 130);
		triangle_context_4.line_to (304, 222);
		triangle_context_4.line_to (290, 147);
		triangle_context_4.close_path ();

		triangle_context_4.fill_preserve();
		triangle_context_4.restore();
		triangle_context_4.set_source_rgba(0.48, 0.98, 0, 0.8);
		triangle_context_4.stroke();
	}

	public static void Triangle5() {
		SvgSurface triangle_surface_5 = new Cairo.SvgSurface ("triangle5.svg", 421, 410);
		Context triangle_context_5 = new Cairo.Context (triangle_surface_5);

		triangle_context_5.set_line_width(2.5);
		triangle_context_5.save();

		// Triangle 5:
		triangle_context_5.set_source_rgba (0, 0.63, 0.90, 0.8);
		triangle_context_5.scale(1.0, 1.0);
		triangle_context_5.line_to (244, 314);
		triangle_context_5.line_to (148, 375);
		triangle_context_5.line_to (70, 184);
		triangle_context_5.close_path ();

		triangle_context_5.fill_preserve();
		triangle_context_5.restore();
		triangle_context_5.set_source_rgba(0, 0.99, 0.93, 0.8);
		triangle_context_5.stroke();
	}

	public static void Triangle6() {
		SvgSurface triangle_surface_6 = new Cairo.SvgSurface ("triangle6.svg", 421, 410);
		Context triangle_context_6 = new Cairo.Context (triangle_surface_6);

		triangle_context_6.set_line_width(2.5);
		triangle_context_6.save();

		// Triangle 6:
		triangle_context_6.set_source_rgba (0.78, 0.38, 0.09, 0.8);
		triangle_context_6.scale(1.0, 1.0);
		triangle_context_6.line_to (195, 260);
		triangle_context_6.line_to (333, 356);
		triangle_context_6.line_to (128, 330);
		triangle_context_6.close_path ();

		triangle_context_6.fill_preserve();
		triangle_context_6.restore();
		triangle_context_6.set_source_rgba(0.98, 0.20, 0.17, 0.8);
		triangle_context_6.stroke();
	}

	public static void Triangle7() {
		SvgSurface triangle_surface_7 = new Cairo.SvgSurface ("triangle7.svg", 421, 410);
		Context triangle_context_7 = new Cairo.Context (triangle_surface_7);

		triangle_context_7.set_line_width(2.5);
		triangle_context_7.save();

		// Triangle 7:
		triangle_context_7.set_source_rgba (0.19, 0.80, 0.19, 0.8);
		triangle_context_7.scale(1.0, 1.0);
		triangle_context_7.line_to (304, 270);
		triangle_context_7.line_to (311, 380);
		triangle_context_7.line_to (252, 326);
		triangle_context_7.close_path ();

		triangle_context_7.fill_preserve();
		triangle_context_7.restore();
		triangle_context_7.set_source_rgba(0.48, 0.98, 0, 0.8);
		triangle_context_7.stroke();
	}

	public static void Logo() {
		// Create a context:
		Cairo.SvgSurface surface = new Cairo.SvgSurface ("triangles-all.svg", 421, 410);
		Cairo.Context context = new Cairo.Context (surface);
		
		context.set_line_width(2.5);
		context.save();

		// Triangle 1
		context.set_source_rgba (0.7, 0.20, 0.17, 0.8);
		context.scale(1.0, 1.0);
		context.line_to (143, 39);
		context.line_to (198, 176);
		context.line_to (23, 281);
		context.close_path ();

		context.fill_preserve();
		context.restore();
		context.set_source_rgba(0.98, 0.38, 0.09, 0.8);
		context.stroke();

		context.set_line_width(2.5);
		context.save();

		// Triangle 2:
		context.set_source_rgba (0, 0.63, 0.90, 0.8);
		context.scale(1.0, 1.0);
		context.line_to (275, 44);
		context.line_to (377, 102);
		context.line_to (100, 118);
		context.close_path ();

		context.fill_preserve();
		context.restore();	
		context.set_source_rgba(0, 0.99, 0.93, 0.8);
		context.stroke();

		context.set_line_width(2.5);
		context.save();

		// Triangle 3:
		context.set_source_rgba (0.78, 0.38, 0.09, 0.8);
		context.scale(1.0, 1.0);
		context.line_to (363, 190);
		context.line_to (250, 126);
		context.line_to (305, 26);
		context.close_path ();

		context.fill_preserve();
		context.restore();
		context.set_source_rgba(0.98, 0.20, 0.17, 0.8);
		context.stroke();

		context.set_line_width(2.5);
		context.save();

		// Triangle 4:
		context.set_source_rgba (0.19, 0.80, 0.19, 0.8);
		context.scale(1.0, 1.0);
		context.line_to (376, 130);
		context.line_to (304, 222);
		context.line_to (290, 147);
		context.close_path ();

		context.fill_preserve();
		context.restore();
		context.set_source_rgba(0.48, 0.98, 0, 0.8);
		context.stroke();

		context.set_line_width(2.5);
		context.save();

		// Triangle 5:
		context.set_source_rgba (0, 0.63, 0.90, 0.8);
		context.scale(1.0, 1.0);
		context.line_to (244, 314);
		context.line_to (148, 375);
		context.line_to (70, 184);
		context.close_path ();

		context.fill_preserve();
		context.restore();
		context.set_source_rgba(0, 0.99, 0.93, 0.8);
		context.stroke();

		context.set_line_width(2.5);
		context.save();

		// Triangle 6:
		context.set_source_rgba (0.78, 0.38, 0.09, 0.8);
		context.scale(1.0, 1.0);
		context.line_to (195, 260);
		context.line_to (333, 356);
		context.line_to (128, 330);
		context.close_path ();

		context.fill_preserve();
		context.restore();
		context.set_source_rgba(0.98, 0.20, 0.17, 0.8);
		context.stroke();

		context.set_line_width(2.5);
		context.save();

		// Triangle 7:
		context.set_source_rgba (0.19, 0.80, 0.19, 0.8);
		context.scale(1.0, 1.0);
		context.line_to (304, 270);
		context.line_to (311, 380);
		context.line_to (252, 326);
		context.close_path ();

		context.fill_preserve();
		context.restore();
		context.set_source_rgba(0.48, 0.98, 0, 0.8);
		context.stroke();
	}

	public static void main (string[] args) {
		Triangle1();
		Triangle2();
		Triangle3();
		Triangle4();
		Triangle5();
		Triangle6();
		Triangle7();
		Triangle1p1();
		Triangle1p2();
		Logo();
	}
}