iphone toDegrees toDegrees编译器问题

我试着用目标c函数的环面，将双折射率转换成弧度，如下所示：

double oldLat = toRadians(oldLocation.coordinate.latitude);

location = [[CCDirector sharedDirector] convertToGL:location];

        // Determine offset of location to projectile
        int offX = location.x - PROJECTILE_POSITION_X;
        int offY = location.y - PROJECTILE_POSITION_Y;

                int realX = winSize.width + (PROJECTILE_WIDTH/2);
        float ratio = (float) offY / (float) offX;
        int realY = (realX * ratio) + PROJECTILE_POSITION_Y;

        int offRealX = realX - PROJECTILE_POSITION_X;
        int offRealY = realY - PROJECTILE_POSITION_Y;

        // Determine angle to face
        float angleRadians = atanf((float)offRealY / (float)offRealX);
        float angleDegrees =  (__angleRadians__)/((__angleRadians__) * 57.29577951f);

但我不断收到编译器警告和错误，或是托拉迪安和托德格的隐式声明

location = [[CCDirector sharedDirector] convertToGL:location];

        // Determine offset of location to projectile
        int offX = location.x - PROJECTILE_POSITION_X;
        int offY = location.y - PROJECTILE_POSITION_Y;

                int realX = winSize.width + (PROJECTILE_WIDTH/2);
        float ratio = (float) offY / (float) offX;
        int realY = (realX * ratio) + PROJECTILE_POSITION_Y;

        int offRealX = realX - PROJECTILE_POSITION_X;
        int offRealY = realY - PROJECTILE_POSITION_Y;

        // Determine angle to face
        float angleRadians = atanf((float)offRealY / (float)offRealX);
        float angleDegrees =  (__angleRadians__)/((__angleRadians__) * 57.29577951f);

我包括了

#import

，但出于某种原因，这并没有解决问题

location = [[CCDirector sharedDirector] convertToGL:location];

        // Determine offset of location to projectile
        int offX = location.x - PROJECTILE_POSITION_X;
        int offY = location.y - PROJECTILE_POSITION_Y;

                int realX = winSize.width + (PROJECTILE_WIDTH/2);
        float ratio = (float) offY / (float) offX;
        int realY = (realX * ratio) + PROJECTILE_POSITION_Y;

        int offRealX = realX - PROJECTILE_POSITION_X;
        int offRealY = realY - PROJECTILE_POSITION_Y;

        // Determine angle to face
        float angleRadians = atanf((float)offRealY / (float)offRealX);
        float angleDegrees =  (__angleRadians__)/((__angleRadians__) * 57.29577951f);

---

任何帮助都是非常值得赞赏的。< / P> < P >基础课上没有TrADADIANS。您可以手动转换它

location = [[CCDirector sharedDirector] convertToGL:location];

        // Determine offset of location to projectile
        int offX = location.x - PROJECTILE_POSITION_X;
        int offY = location.y - PROJECTILE_POSITION_Y;

                int realX = winSize.width + (PROJECTILE_WIDTH/2);
        float ratio = (float) offY / (float) offX;
        int realY = (realX * ratio) + PROJECTILE_POSITION_Y;

        int offRealX = realX - PROJECTILE_POSITION_X;
        int offRealY = realY - PROJECTILE_POSITION_Y;

        // Determine angle to face
        float angleRadians = atanf((float)offRealY / (float)offRealX);
        float angleDegrees =  (__angleRadians__)/((__angleRadians__) * 57.29577951f);

degrees*M_PI/180.0

location = [[CCDirector sharedDirector] convertToGL:location];

        // Determine offset of location to projectile
        int offX = location.x - PROJECTILE_POSITION_X;
        int offY = location.y - PROJECTILE_POSITION_Y;

                int realX = winSize.width + (PROJECTILE_WIDTH/2);
        float ratio = (float) offY / (float) offX;
        int realY = (realX * ratio) + PROJECTILE_POSITION_Y;

        int offRealX = realX - PROJECTILE_POSITION_X;
        int offRealY = realY - PROJECTILE_POSITION_Y;

        // Determine angle to face
        float angleRadians = atanf((float)offRealY / (float)offRealX);
        float angleDegrees =  (__angleRadians__)/((__angleRadians__) * 57.29577951f);

基金会导入了math.h，所以你将有M_PI，否则你将不得不

location = [[CCDirector sharedDirector] convertToGL:location];

        // Determine offset of location to projectile
        int offX = location.x - PROJECTILE_POSITION_X;
        int offY = location.y - PROJECTILE_POSITION_Y;

                int realX = winSize.width + (PROJECTILE_WIDTH/2);
        float ratio = (float) offY / (float) offX;
        int realY = (realX * ratio) + PROJECTILE_POSITION_Y;

        int offRealX = realX - PROJECTILE_POSITION_X;
        int offRealY = realY - PROJECTILE_POSITION_Y;

        // Determine angle to face
        float angleRadians = atanf((float)offRealY / (float)offRealX);
        float angleDegrees =  (__angleRadians__)/((__angleRadians__) * 57.29577951f);

---

<代码>包括< /代码>

< P >基础类中没有TrADADIAN。您可以手动转换它

location = [[CCDirector sharedDirector] convertToGL:location];

        // Determine offset of location to projectile
        int offX = location.x - PROJECTILE_POSITION_X;
        int offY = location.y - PROJECTILE_POSITION_Y;

                int realX = winSize.width + (PROJECTILE_WIDTH/2);
        float ratio = (float) offY / (float) offX;
        int realY = (realX * ratio) + PROJECTILE_POSITION_Y;

        int offRealX = realX - PROJECTILE_POSITION_X;
        int offRealY = realY - PROJECTILE_POSITION_Y;

        // Determine angle to face
        float angleRadians = atanf((float)offRealY / (float)offRealX);
        float angleDegrees =  (__angleRadians__)/((__angleRadians__) * 57.29577951f);

degrees*M_PI/180.0

location = [[CCDirector sharedDirector] convertToGL:location];

        // Determine offset of location to projectile
        int offX = location.x - PROJECTILE_POSITION_X;
        int offY = location.y - PROJECTILE_POSITION_Y;

                int realX = winSize.width + (PROJECTILE_WIDTH/2);
        float ratio = (float) offY / (float) offX;
        int realY = (realX * ratio) + PROJECTILE_POSITION_Y;

        int offRealX = realX - PROJECTILE_POSITION_X;
        int offRealY = realY - PROJECTILE_POSITION_Y;

        // Determine angle to face
        float angleRadians = atanf((float)offRealY / (float)offRealX);
        float angleDegrees =  (__angleRadians__)/((__angleRadians__) * 57.29577951f);

基金会导入了math.h，所以你将有M_PI，否则你将不得不

location = [[CCDirector sharedDirector] convertToGL:location];

        // Determine offset of location to projectile
        int offX = location.x - PROJECTILE_POSITION_X;
        int offY = location.y - PROJECTILE_POSITION_Y;

                int realX = winSize.width + (PROJECTILE_WIDTH/2);
        float ratio = (float) offY / (float) offX;
        int realY = (realX * ratio) + PROJECTILE_POSITION_Y;

        int offRealX = realX - PROJECTILE_POSITION_X;
        int offRealY = realY - PROJECTILE_POSITION_Y;

        // Determine angle to face
        float angleRadians = atanf((float)offRealY / (float)offRealX);
        float angleDegrees =  (__angleRadians__)/((__angleRadians__) * 57.29577951f);

#包括

尝试以下编码：-（弧度到度）

location = [[CCDirector sharedDirector] convertToGL:location];

        // Determine offset of location to projectile
        int offX = location.x - PROJECTILE_POSITION_X;
        int offY = location.y - PROJECTILE_POSITION_Y;

                int realX = winSize.width + (PROJECTILE_WIDTH/2);
        float ratio = (float) offY / (float) offX;
        int realY = (realX * ratio) + PROJECTILE_POSITION_Y;

        int offRealX = realX - PROJECTILE_POSITION_X;
        int offRealY = realY - PROJECTILE_POSITION_Y;

        // Determine angle to face
        float angleRadians = atanf((float)offRealY / (float)offRealX);
        float angleDegrees =  (__angleRadians__)/((__angleRadians__) * 57.29577951f);

尝试以下编码：-（弧度到度）

location = [[CCDirector sharedDirector] convertToGL:location];

        // Determine offset of location to projectile
        int offX = location.x - PROJECTILE_POSITION_X;
        int offY = location.y - PROJECTILE_POSITION_Y;

                int realX = winSize.width + (PROJECTILE_WIDTH/2);
        float ratio = (float) offY / (float) offX;
        int realY = (realX * ratio) + PROJECTILE_POSITION_Y;

        int offRealX = realX - PROJECTILE_POSITION_X;
        int offRealY = realY - PROJECTILE_POSITION_Y;

        // Determine angle to face
        float angleRadians = atanf((float)offRealY / (float)offRealX);
        float angleDegrees =  (__angleRadians__)/((__angleRadians__) * 57.29577951f);