本文整理汇总了C++中ConvexHull::getVertexCount方法的典型用法代码示例。如果您正苦于以下问题：C++ ConvexHull::getVertexCount方法的具体用法？C++ ConvexHull::getVertexCount怎么用？C++ ConvexHull::getVertexCount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ConvexHull的用法示例。
在下文中一共展示了ConvexHull::getVertexCount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:
void Light2D::findEdges(LightProperties light, ConvexHull object, int *index0, int *index1)
{
float m1, n1, m2, n2, cx;
float x1 = light.position.x, y1 = light.position.y;
int nextIndex, index, prevIndex;
int nV = object.getVertexCount();
Vector2 p1, p2, p3, p4;
Vector2 edges[2];
int curEdge = 0;
float al;
bool u = 0;
int in[2];
bool isBackFacing[CONVEX_HULL_MAX_VERTEX_COUNT];
for(int i = 0; i < CONVEX_HULL_MAX_VERTEX_COUNT; ++i) isBackFacing[i] = 0;
//int backFacingCount = 0;
for(int i = 0; i < nV + 1; ++i)
{
Vector2 firstVertex = Vector2(object.getVertex(i).x, object.getVertex(i).y);
int secondIndex = (i + 1) % nV;
Vector2 secondVertex = Vector2(object.getVertex(secondIndex).x, object.getVertex(secondIndex).y);
Vector2 middle = (firstVertex + secondVertex) / 2;
Vector2 L = light.position - middle;
Vector2 N;
N.x = firstVertex.y - secondVertex.y;
N.y = secondVertex.x - firstVertex.x;
isBackFacing[i] = (N.dotProduct(L) > 0);
//backFacingCount += isBackFacing[i];
}
//if(backFacingCount == nV) return 0;
int startingIndex = 0;
int endingIndex = 0;
for (int i = 0; i < nV; i++)
{
//graphics.fillEllipse(object.getVertex(i).x, object.getVertex(i).y, 5, 5, 0, 2 * pi, COLOR_RGB(255, 255, 255), - 5);
int currentIndex = i % nV;
int nextEdge = (i + 1) % nV;
/*if(isBackFacing[i])
{
graphics.fillEllipse(object.getVertex(i).x, object.getVertex(i).y, 20, 20, 0, 2 * pi, COLOR_RGB(255, 255, i * (255 / nV) ), - 10);
}*/
if (isBackFacing[currentIndex] && !isBackFacing[nextEdge])
{
endingIndex = nextEdge;
//break;
}
if (!isBackFacing[currentIndex] && isBackFacing[nextEdge])
{
startingIndex = nextEdge;
}
}
//*i1 = edges[0];
//*i2 = object.getVertex(1);
*index0 = startingIndex;
*index1 = endingIndex;
/*Vector2 i1 = object.getVertex(startingIndex);
Vector2 i2 = object.getVertex(endingIndex);
graphics.fillEllipse(i1.x, i1.y, 10, 10, 0, 2 * pi, COLOR_RGB(255, 0, 0), - 10);
graphics.fillEllipse(i2.x, i2.y, 20, 20, 0, 2 * pi, COLOR_RGB(0, 255, 0), - 10);*/
//console.print("StartingIndex : " + INT_TO_STRING(startingIndex) + ", EndingIndex : " + INT_TO_STRING(endingIndex));
}