本文整理汇总了C++中Mat3::identity方法的典型用法代码示例。如果您正苦于以下问题：C++ Mat3::identity方法的具体用法？C++ Mat3::identity怎么用？C++ Mat3::identity使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Mat3的用法示例。
在下文中一共展示了Mat3::identity方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: bakeTexture
void OcclusionBaker::bakeTexture(cocos2d::RenderTexture* tex,
const cocos2d::Vec2& worldPos,
const cocos2d::Vec2& scaleFactor,
const std::vector<realtrick::Polygon>& polygons,
const cocos2d::Size& boundarySize,
const FieldOfView& fov)
{
_eyePos = worldPos;
// 경계면 정점을 만든다.
realtrick::Polygon clipBoundary;
//
// (v2) (v3)
// . --------------- .
// | worldPos |
// | . |
// | |
// . --------------- .
// (v1) (v4)
//
const int PAD = 0;
Vec2 v1 = Vec2(worldPos.x - boundarySize.width / 2 + PAD, worldPos.y - boundarySize.height / 2 + PAD); // left bottom
Vec2 v2 = Vec2(worldPos.x - boundarySize.width / 2 + PAD, worldPos.y + boundarySize.height / 2 - PAD); // left top
Vec2 v3 = Vec2(worldPos.x + boundarySize.width / 2 - PAD, worldPos.y + boundarySize.height / 2 - PAD); // right top
Vec2 v4 = Vec2(worldPos.x + boundarySize.width / 2 - PAD, worldPos.y - boundarySize.height / 2 + PAD); // right bottom
PROFILE_BEGIN("a");
if ( fov.isEnable )
{
// fov 를 적용한다면 시야각과 플레이어 주변 원 데이터를 이용해 클리핑 경계면을 만든다. ( CCW )
// *fov : field of view (시야각)
// (n + m)
// (1) . ---.---.---.-- . (n+4)
// \ /
// \ /
// \ /
// \ /
// \ fov /
// \ /
// (2)' '(n+3)
// . w .
// '..'
// ( n 개의 정점 )
//
//
// "1", "n + 4" vertex
vector<Segment> boundaryWalls;
boundaryWalls.push_back(Segment(v1, v2));
boundaryWalls.push_back(Segment(v2, v3));
boundaryWalls.push_back(Segment(v3, v4));
boundaryWalls.push_back(Segment(v4, v1));
Mat3 rotationMatrix;
rotationMatrix.rotate(MATH_DEG_TO_RAD(fov.entryDegree/2));
Vec2 leftDir = rotationMatrix.getTransformedVector(fov.heading);
Segment leftRay = Segment(worldPos, worldPos + leftDir * SEGMENT_LENGTH);
rotationMatrix.identity();
rotationMatrix.rotate(MATH_DEG_TO_RAD(-fov.entryDegree/2));
Vec2 rightDir = rotationMatrix.getTransformedVector(fov.heading);
Segment rightRay = Segment(worldPos, worldPos + rightDir * SEGMENT_LENGTH);
Vec2 leftIntersectPoint = _getClosestIntersectPointToWall(boundaryWalls, leftRay);
Vec2 rightIntersectPoint = _getClosestIntersectPointToWall(boundaryWalls, rightRay);
// "n + m" vertex
std::vector<Vec2> belongPoints;
if ( leftDir.cross(v1 - worldPos) < 0 && rightDir.cross(v1 - worldPos) > 0 ) belongPoints.push_back(v1);
if ( leftDir.cross(v2 - worldPos) < 0 && rightDir.cross(v2 - worldPos) > 0 ) belongPoints.push_back(v2);
if ( leftDir.cross(v3 - worldPos) < 0 && rightDir.cross(v3 - worldPos) > 0 ) belongPoints.push_back(v3);
if ( leftDir.cross(v4 - worldPos) < 0 && rightDir.cross(v4 - worldPos) > 0 ) belongPoints.push_back(v4);
std::sort(std::begin(belongPoints), std::end(belongPoints), [&](const Vec2& v1, const Vec2& v2){
Vec2 tempV1 = (v1 - _eyePos).getNormalized();
Vec2 tempV2 = (v2 - _eyePos).getNormalized();
float angle1 = physics::getAngleFromAxis(tempV1, fov.heading);
float angle2 = physics::getAngleFromAxis(tempV2, fov.heading);
return angle1 > angle2;
});
// "2", "n + 3" vertex
Vec2 leftCirclePoint = worldPos + leftDir * fov.aroundCircleRadius;
Vec2 rightCirclePoint = worldPos + rightDir * fov.aroundCircleRadius;
// "n" vertices
std::vector<Vec2> circleVertices;
int remainCircleDegree = 360 - fov.entryDegree;
int sliceCount = std::max(fov.aroundCircleSlice, 10); // 최소 10개의 정점을 이용해 정점 n을 만든다.
int degreePerLoop = remainCircleDegree / sliceCount;
for(int i = 1 ; i < sliceCount ; ++ i)
{
//.........这里部分代码省略.........