CCLayerColor 设置圆角 ，CCLayerColor Rounded Rectangle Drawing
给CCLayerColor设置圆角
CCLayerColor Rounded Rectangle Drawing
[cpp]
[cpp]
/* ========================================================================================
= Add these methods to a file that gets included in your .pch or add these directly to =
= CCDrawingPrimitives.h and .m =
==========================================================================================*/
/**
* Draws a rounded rectangle.
*
* @param rect The rectangle to draw.
* @param cornerRadius The radius of the corners.
* @param smoothness A multiplier for the number of segments drawn for each corner. 2 or 3 is recommended.
* @param cornersToRound An array of BOOL values that signifies which corners we should round. The indices
* represent each corner as follows: 0 -> bottomLeft, 1 -> topLeft, 2 -> topRight, 3 -> bottomRight.
*/
void ccDrawSolidRoundedRect(CGRect rect, int cornerRadius, int smoothness, BOOL *cornersToRound) {
CGPoint origin = rect.origin;
CGSize size = rect.size;
// number of segments for each rounded corner, +1 for end point of the curve
int roundedCornerSegments = cornerRadius * smoothness + 1;
// get the total vertices we'll need to draw
int totalVertices = 0;
for (int i = 0; i < 4; i++) {
// add number of vertices needed for a rounded corner if we're rounding it,
// else just add 1 vertex for the corner
if (cornersToRound[i]) {
totalVertices += roundedCornerSegments;
} else {
totalVertices += 1;
}
}
ccVertex2F vertices[totalVertices];
// create the vertices we're going to draw in clockwise fashion starting from bottom left corner
int currentVertexIndex = 0;
for (int i = 0; i < 4; i++) {
// if we don't want to draw the rounded corner just add a vertex at the corner point
if (!cornersToRound[i]) {
switch (i) {
case 0: vertices[currentVertexIndex] = (ccVertex2F){origin.x, origin.y}; break;
case 1: vertices[currentVertexIndex] = (ccVertex2F){origin.x, origin.y + size.height}; break;
case 2: vertices[currentVertexIndex] = (ccVertex2F){origin.x + size.width, origin.y + size.height}; break;
case 3: vertices[currentVertexIndex] = (ccVertex2F){origin.x + size.width, origin.y}; break;
default: break;
}
currentVertexIndex++;
} else {
// we want the corner rounded so add vertices for that rounded corner
switch (i) {
case 0: addCubicBezierVertices(ccp(origin.x + cornerRadius, origin.y),
ccp(origin.x + cornerRadius/2, origin.y),
ccp(origin.x, origin.y + cornerRadius/2),
ccp(origin.x, origin.y + cornerRadius),
roundedCornerSegments, &vertices[currentVertexIndex]); break;
case 1: addCubicBezierVertices(ccp(origin.x, origin.y + size.height - cornerRadius),
ccp(origin.x, origin.y + size.height - cornerRadius/2),
ccp(origin.x + cornerRadius/2, origin.y + size.height),
ccp(origin.x + cornerRadius, origin.y + size.height),
&nb
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