Vector RenderObject::getWorldCollidePosition(const Vector &vec)
{
#ifdef BBGE_USE_GLM
glm::mat4 transformMatrix = glm::translate(
matrixChain(this),
glm::vec3(collidePosition.x + vec.x, collidePosition.y + vec.y, 0.0f)
);
return Vector(transformMatrix[3][0], transformMatrix[3][1], 0);
#else
#ifdef BBGE_BUILD_OPENGL
glPushMatrix();
glLoadIdentity();
matrixChain(this);
glTranslatef(collidePosition.x+vec.x, collidePosition.y+vec.y, 0);
float m[16];
glGetFloatv(GL_MODELVIEW_MATRIX, m);
float x = m[12];
float y = m[13];
glPopMatrix();
return Vector(x,y,0);
#elif BBGE_BUILD_DIRECTX
return vec;
#endif
#endif
}
int main ()
{
int n;
int q[2*N];
int p[N+1],flag=1;
int m[N+1][N+1];
int s[N+1][N+1];
printf ("请输入矩阵的个数:");
scanf ("%d",&n);
for (int i=0; i<=2*n-1; i++)
{
if (i%2==0)
{
printf ("***************\n");
printf ("请输入A%d的行:",(i/2)+1);
}
else
{
printf ("列***********:");
}
scanf ("%d",&q[i]);
}
for (int i=1; i<=2*n-2; i++)
{
if (i%2!=0&&q[i]!=q[i+1])
{
flag=0;
break;
}
}
for (int j=1; j<=n-1; j++)
{
p[j]=q[2*j];
}
if (flag!=0)
{
p[0]=q[0];
p[n]=q[2*n-1];
matrixChain (p,m,s);
printf ("式子如下:\n");
traceback(1,n,s);
printf ("\n");
printf ("最小数乘次数为%d\n",m[1][n]);
}
else
{
printf ("这%d个矩阵不能连乘!\n",n);
}
return 0;
}
static void matrixChain(RenderObject *ro)
{
if (RenderObject *parent = ro->getParent())
matrixChain(parent);
#ifdef BBGE_BUILD_OPENGL
glTranslatef(ro->position.x+ro->offset.x, ro->position.y+ro->offset.y, 0);
glRotatef(ro->rotation.z+ro->rotationOffset.z, 0, 0, 1);
glTranslatef(ro->beforeScaleOffset.x, ro->beforeScaleOffset.y, 0);
glScalef(ro->scale.x, ro->scale.y, 0);
if (ro->isfh())
{
//glDisable(GL_CULL_FACE);
glRotatef(180, 0, 1, 0);
}
glTranslatef(ro->internalOffset.x, ro->internalOffset.y, 0);
#endif
}
Vector RenderObject::getWorldCollidePosition(const Vector &vec)
{
#ifdef BBGE_BUILD_OPENGL
glPushMatrix();
glLoadIdentity();
matrixChain();
glTranslatef(collidePosition.x+vec.x, collidePosition.y+vec.y, 0);
float m[16];
glGetFloatv(GL_MODELVIEW_MATRIX, m);
float x = m[12];
float y = m[13];
glPopMatrix();
return Vector(x,y,0);
#elif BBGE_BUILD_DIRECTX
return vec;
#endif
}
static glm::mat4 matrixChain(const RenderObject *ro)
{
glm::mat4 tranformMatrix = glm::scale(
glm::translate(
glm::rotate(
glm::translate(
ro->getParent() ? matrixChain(ro->getParent()) : glm::mat4(1.0f),
glm::vec3(ro->position.x+ro->offset.x, ro->position.y+ro->offset.y, 0)
),
ro->rotation.z + ro->rotationOffset.z,
glm::vec3(0, 0, 1)
),
glm::vec3(ro->beforeScaleOffset.x, ro->beforeScaleOffset.y, 0.0f)
),
glm::vec3(ro->scale.x, ro->scale.y, 0.0f)
);
if (ro->isfh())
tranformMatrix *= glm::rotate(180.0f, glm::vec3(0.0f, 1.0f, 0.0f));
tranformMatrix *= glm::translate(glm::vec3(ro->internalOffset.x, ro->internalOffset.y, 0.0f));
return tranformMatrix;
}
