<construction> <!-- 第一个三角形 ABC --> <element type="point" label="A"> <coords x="0.0" y="0.0" z="1.0"/> </element> <element type="point" label="B"> <coords x="4.0" y="0.0" z="1.0"/> </element> <element type="point" label="C"> <coords x="1.0" y="3.0" z="1.0"/> </element> <command name="Polygon"> <input a0="A" a1="B" a2="C"/> <output a0="tri1"/> </command> <element type="polygon" label="tri1"> <show object="true" label="false"/> <objColor r="0" g="100" b="200" alpha="0.15"/> </element> <!-- 第二个三角形 DEF (由 ABC 向右平移 6 个单位得到) --> <element type="point" label="D"> <coords x="6.0" y="0.0" z="1.0"/> </element> <element type="point" label="E"> <coords x="10.0" y="0.0" z="1.0"/> </element> <element type="point" label="F"> <coords x="7.0" y="3.0" z="1.0"/> </element> <command name="Polygon"> <input a0="D" a1="E" a2="F"/> <output a0="tri2"/> </command> <element type="polygon" label="tri2"> <show object="true" label="false"/> <objColor r="200" g="100" b="0" alpha="0.15"/> </element> </construction>
