我正在试图在openGL中的一个台球桌上做'聚光灯'。这应该相当简单,但有些事情出错了,我无法弄清楚什么。OpenGL射灯
我有一个班级'PoolLight',我用它作为灯光的一种控制类。这里是:
#include "PoolLight.h"
#include "Glut/glut.h"
#include "GL/gl.h"
#include "GL/glu.h"
PoolLight::PoolLight() {
}
PoolLight::PoolLight(GLenum lightNumber, GLenum lightType, float red, float green, float blue, bool distant, float posX, float posY, float posZ)
{
this->lightNumber = lightNumber;
this->lightType = lightType;
color[0] = red; color[1] = green; color[2] = blue; color[3] = 1;
position[0] = posX; position[1] = posY; position[2] = posZ; position[3] = (int) (!distant);
glLightfv(lightNumber, lightType, color);
glLightfv(lightNumber, GL_POSITION, position);
enabled(true);
}
PoolLight::~PoolLight(void)
{
}
void PoolLight::setSpotlight(float angle, float attenuation, float dirX, float dirY, float dirZ) {
glLightf(lightNumber, GL_SPOT_EXPONENT, angle);
glLightf(lightNumber, GL_CONSTANT_ATTENUATION, attenuation);
glLightf(lightNumber, GL_LINEAR_ATTENUATION, 0.0f);
glLightf(lightNumber, GL_QUADRATIC_ATTENUATION, 0.0f);
spotDirection[0] = dirX; spotDirection[1] = dirY; spotDirection[2] = dirZ;
glLightfv(lightNumber, GL_SPOT_DIRECTION, spotDirection);
glLightf(lightNumber, GL_SPOT_CUTOFF, 60);
}
void PoolLight::enabled(bool enabled) {
if (enabled) glEnable(lightNumber);
else glDisable(lightNumber);
}
void PoolLight::reposition() {
glLightfv(lightNumber, GL_POSITION, position);
}
而且在显示::初始化,我有这样的代码:
glEnable(GL_TEXTURE_2D);
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glPointSize(6);
//Lighting
middleSpotlight = PoolLight(GL_LIGHT0, GL_DIFFUSE, .3, .3, 0.15, false, 0, 0, 50);
middleSpotlight.setSpotlight(60, 1, 0, 0, -1);
upperSpotlight = PoolLight(GL_LIGHT1, GL_DIFFUSE, .3, .3, 0.15, false, 0, 45, 50);
upperSpotlight.setSpotlight(60, 1, 0, 0, -1);
lowerSpotlight = PoolLight(GL_LIGHT2, GL_DIFFUSE, .3, .3, 0.15, false, 0, -45, 50);
lowerSpotlight.setSpotlight(60, 1, 0, 0, -1);
但是,禁用所有,但中间的聚光灯我的场景均匀带有几分“点燃即使毯子'照明。
我觉得我可能错过了一些明显的东西,但我只是看不到。
是否以弧度指定角度?用'60'作为你的角度,好像你在使用度数。 – ChrisF 2011-04-14 08:44:50
我改成了(60.0 *(3.1415/180)),但无济于事。 – Xenoprimate 2011-04-14 08:58:10
嗯,我现在想不出别的什么 - 对不起。 – ChrisF 2011-04-14 09:01:19