OpenGL 编程/参考/glColor

描述

视觉效果

• 更改下一个要绘制的对象的颜色

使用环境

• 可以在显示循环中的任何位置使用，但通常用在 glBegin 和 glEnd 之间。
• 影响其后的一切，直到再次调用它或循环重新开始。
• glEnd(); 和 glBegin(); 不会影响它。

使用示例

• 绘制 7 个点和 3 种不同的颜色
• 从 x 中点 y .5+ 开始，移动到 x .6+ y .5+
• 显示即使重新启动新的 gl 部分，颜色也会保持不变
• 显示即使循环重新开始，颜色也会保持不变
• 在 基本测试应用程序 程序中用此替换 display 函数，以查看结果

void display(void)
{
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glBegin(GL_POINTS);
		glVertex3f(0.0,0.5,0.0);//drawn white or default color first loop and green all other loops
		glColor3f(1.0,0.5,0.0);//set red 100% green 50% blue 0%
		glVertex3f(0.1,0.5,0.0);//drawn orange
		glVertex3f(0.2,0.5,0.0);//drawn orange
		glColor3f(1.0,0.0,0.0);//set red 100% green 0% blue 0%
		glVertex3f(0.3,0.5,0.0);//drawn red
	glEnd();
	glBegin(GL_POINTS);
		glVertex3f(0.4,0.5,0.0);//drawn red
		glColor3f(0.0,1.0,0.0);//set red 0% green 100% blue 0%
		glVertex3f(0.5,0.5,0.0);//drawn green
		glVertex3f(0.6,0.5,0.0);//drawn green
	glEnd();
	glutSwapBuffers();
}

函数定义

• WINGDIAPI void APIENTRY glColor3b (GLbyte red, GLbyte green, GLbyte blue);
• WINGDIAPI void APIENTRY glColor3bv (const GLbyte *v);
• WINGDIAPI void APIENTRY glColor3d (GLdouble red, GLdouble green, GLdouble blue);
• WINGDIAPI void APIENTRY glColor3dv (const GLdouble *v);
• WINGDIAPI void APIENTRY glColor3f (GLfloat red, GLfloat green, GLfloat blue);
• WINGDIAPI void APIENTRY glColor3fv (const GLfloat *v);
• WINGDIAPI void APIENTRY glColor3i (GLint red, GLint green, GLint blue);
• WINGDIAPI void APIENTRY glColor3iv (const GLint *v);
• WINGDIAPI void APIENTRY glColor3s (GLshort red, GLshort green, GLshort blue);
• WINGDIAPI void APIENTRY glColor3sv (const GLshort *v);
• WINGDIAPI void APIENTRY glColor3ub (GLubyte red, GLubyte green, GLubyte blue);
• WINGDIAPI void APIENTRY glColor3ubv (const GLubyte *v);
• WINGDIAPI void APIENTRY glColor3ui (GLuint red, GLuint green, GLuint blue);
• WINGDIAPI void APIENTRY glColor3uiv (const GLuint *v);
• WINGDIAPI void APIENTRY glColor3us (GLushort red, GLushort green, GLushort blue);
• WINGDIAPI void APIENTRY glColor3usv (const GLushort *v);
• WINGDIAPI void APIENTRY glColor4b (GLbyte red, GLbyte green, GLbyte blue, GLbyte alpha);
• WINGDIAPI void APIENTRY glColor4bv (const GLbyte *v);
• WINGDIAPI void APIENTRY glColor4d (GLdouble red, GLdouble green, GLdouble blue, GLdouble alpha);
• WINGDIAPI void APIENTRY glColor4dv (const GLdouble *v);
• WINGDIAPI void APIENTRY glColor4f (GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
• WINGDIAPI void APIENTRY glColor4fv (const GLfloat *v);
• WINGDIAPI void APIENTRY glColor4i (GLint red, GLint green, GLint blue, GLint alpha);
• WINGDIAPI void APIENTRY glColor4iv (const GLint *v);
• WINGDIAPI void APIENTRY glColor4s (GLshort red, GLshort green, GLshort blue, GLshort alpha);
• WINGDIAPI void APIENTRY glColor4sv (const GLshort *v);
• WINGDIAPI void APIENTRY glColor4ub (GLubyte red, GLubyte green, GLubyte blue, GLubyte alpha);
• WINGDIAPI void APIENTRY glColor4ubv (const GLubyte *v);
• WINGDIAPI void APIENTRY glColor4ui (GLuint red, GLuint green, GLuint blue, GLuint alpha);
• WINGDIAPI void APIENTRY glColor4uiv (const GLuint *v);
• WINGDIAPI void APIENTRY glColor4us (GLushort red, GLushort green, GLushort blue, GLushort alpha);
• WINGDIAPI void APIENTRY glColor4usv (const GLushort *v);

相关函数

• WINGDIAPI void APIENTRY glColorMask (GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
• WINGDIAPI void APIENTRY glColorMaterial (GLenum face, GLenum mode);
• WINGDIAPI void APIENTRY glColorPointer (GLint size, GLenum type, GLsizei stride, const GLvoid *pointer);

参考

http://www.cs.utk.edu/~vose/c-stuff/opengl/glColor.html