GLvoid Material::SetDiffuseColor(GLenum face, const Color4& c)
{
switch (face)
{
case GL_FRONT:
_front_diffuse.r() = c.r();
_front_diffuse.g() = c.g();
_front_diffuse.b() = c.b();
_front_diffuse.a() = c.a();
break;
case GL_BACK:
_back_diffuse.r() = c.r();
_back_diffuse.g() = c.g();
_back_diffuse.b() = c.b();
_back_diffuse.a() = c.a();
break;
case GL_FRONT_AND_BACK:
_front_diffuse.r() = c.r();
_front_diffuse.g() = c.g();
_front_diffuse.b() = c.b();
_front_diffuse.a() = c.a();
_back_diffuse.r() = c.r();
_back_diffuse.g() = c.g();
_back_diffuse.b() = c.b();
_back_diffuse.a() = c.a();
break;
}
}
GLvoid Material::SetSpecularColor(GLenum face, const Color4& c)
{
switch (face)
{
case GL_FRONT:
_front_specular.r() = c.r();
_front_specular.g() = c.g();
_front_specular.b() = c.b();
_front_specular.a() = c.a();
break;
case GL_BACK:
_back_specular.r() = c.r();
_back_specular.g() = c.g();
_back_specular.b() = c.b();
_back_specular.a() = c.a();
break;
case GL_FRONT_AND_BACK:
_front_specular.r() = c.r();
_front_specular.g() = c.g();
_front_specular.b() = c.b();
_front_specular.a() = c.a();
_back_specular.r() = c.r();
_back_specular.g() = c.g();
_back_specular.b() = c.b();
_back_specular.a() = c.a();
break;
}
}
// ----------------------------------------------------------------
// Name： renderRectangle
// Description: 根据参数TRectanglef提供的参数绘制矩形
// Return Value: void
// ----------------------------------------------------------------
void Helper::renderRectangle( const TRectanglef& rect,
Color4 color, bool isEmpty )
{
float left = rect.m_Left;
float right = rect.m_Right;
float bottom = rect.m_Bottom;
float top = rect.m_Top;
glPushMatrix();
{
glColor4f( color.r(), color.g(), color.b(), color.a() );
glLineWidth(2.0);
if( isEmpty )
{
glBegin(GL_LINE_STRIP);
glVertex3f(left, bottom, 0.0);
glVertex3f(right, bottom, 0.0);
glVertex3f(right, top, 0.0);
glVertex3f(left, top, 0.0);
glVertex3f(left, bottom, 0.0);
glEnd();
}
else
{
glBegin(GL_QUADS);
glVertex3f(left, bottom, 0.0);
glVertex3f(right, bottom, 0.0);
glVertex3f(right, top, 0.0);
glVertex3f(left, top, 0.0);
glEnd();
}
glLineWidth(1.0);
} glPopMatrix();
}
// ----------------------------------------------------------------
// Name： renderBox
// Description: 根据参数Box提供的参数绘制box线框
// Return Value: void
// ----------------------------------------------------------------
void Helper::renderBox(const Box3f& box, Color4 color)
{
glPushMatrix();
{
glColor4f( color.r(), color.g(), color.b(), color.a() );
ColorCube::renderColorCube( box );
} glPopMatrix();
}
Color4ub toColor4ub(const Color4& _color)
{
using gex::color::clamp;
return Color4ub(
clamp(int(255*_color.r()),0,255),
clamp(int(255*_color.g()),0,255),
clamp(int(255*_color.b()),0,255),
clamp(int(255*_color.a()),0,255));
}
// ----------------------------------------------------------------
// Name： renderElipse
// Description: 根据参数TRectanglef提供的参数绘制椭圆
// Return Value: void
// ----------------------------------------------------------------
void Helper::renderElipse( const TRectanglef& rect,
Color4 color, bool isEmpty )
{
float xpos = rect.GetCenter().x();
float ypos = rect.GetCenter().y();
float xradius = rect.GetSize().x() / 2;
float yradius = rect.GetSize().y() / 2;
const float DEG2RAD = 3.14159/180;
glPushMatrix();
{
glColor4f( color.r(), color.g(), color.b(), color.a() );
glLineWidth(5.0);
if( isEmpty )
{
glBegin(GL_LINE_LOOP);
for (int i=0; i<360; i++)
{
//convert degrees into radians
float degInRad = i*DEG2RAD;
glVertex2f( xpos + cos(degInRad) * xradius, ypos + sin(degInRad) * yradius );
}
glEnd();
}
else
{
glBegin(GL_TRIANGLE_FAN);
glVertex2f(xpos, ypos);
//draw the vertex on the contour of the circle
for(int i = 0; i < 360; i++)
{
float degInRad = i*DEG2RAD;
glVertex2f( xpos + cos(degInRad) * xradius, ypos + sin(degInRad) * yradius );
}
glVertex2f( 1.0 * xradius + xpos, 0.0 *yradius + ypos );
glEnd();
}
glLineWidth(1.0);
}glPopMatrix();
}
static std::string Color_str(const Color4& c)
{
return stringf("<rgba: %.2f %.2f %.2f %.2f>",
c.r(), c.g(), c.b(), c.a());
}
GLvoid Material::SetAmbientColor(GLenum face, const Color4& c)
{
SetAmbientColor(face, c.r(), c.g(), c.b(), c.a());
}