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Mayaで指定ベクトルの衝突判定を行う
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# -*- coding: utf-8 -*- | |
#=========================================== | |
# カメラから直線方向にある選択メッシュに対してRayを飛ばす | |
# (視野角は考慮してないんでカメラは方向だけです。) | |
#=========================================== | |
import maya.api.OpenMaya as om | |
# vector用カメラの諸々を取得 | |
camera_selList = om.MGlobal.getSelectionListByName("camera1") | |
camera_dag = camera_selList.getDagPath(0) | |
camera_transform = camera_dag.transform() | |
camera_transform_MFn = om.MFnTransform(camera_transform) | |
matrix = camera_transform_MFn.transformation() | |
camera_position = om.MFloatPoint(matrix.translation(om.MSpace.kWorld)) | |
camera_MFn = om.MFnCamera(camera_dag) | |
camera_vector = om.MFloatVector(camera_MFn.viewDirection(om.MSpace.kWorld)) | |
# メッシュごとのレイを取得 | |
search_distance = 10000; | |
mesh_selList = om.MGlobal.getActiveSelectionList() | |
for n in xrange(mesh_selList.length()): | |
current_mesh_dag = mesh_selList.getDagPath(n) | |
current_mesh_MFn = om.MFnMesh(current_mesh_dag) | |
hitPoints,hitRayParams,hitFaces,hitTriangles,hitBary1s,hitBary2s = current_mesh_MFn.allIntersections(camera_position, camera_vector, om.MSpace.kWorld, search_distance, True) | |
# ちなみにanyIntersection関数だと貫通は判定しない | |
# hitPoints,hitRayParams,hitFaces,hitTriangles,hitBary1s,hitBary2s = current_mesh_MFn.anyIntersection(camera_position, camera_vector, om.MSpace.kWorld, search_distance, True) | |
print "\n --- {} ---".format(current_mesh_MFn.name()) | |
print u" ヒットした座標 : {}".format(hitPoints) | |
print u" ヒットまでの距離 : {}".format(hitRayParams) | |
print u" ヒットしたフェースのID : {}".format(hitFaces) | |
print u" トライアングルのID : {}".format(hitTriangles) | |
print u" ヒットしたポイントの最初の重心位置 : {}".format(hitBary1s) | |
print u" ヒットしたポイントの二つ目の重心位置: {}".format(hitBary2s) |
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