Цвет и движение объекта OpenGL не чередуются должным образом

Моя программа — комната с источником света в центре (сфера).

Я хочу сделать режим «диско», который заставит сферу двигаться влево и вправо вдоль оси х. А также чередуйте свой цвет между красным и синим одновременно.

Это раздел моего кода, который включает режим. g_disco_mode переменная, которая имеет значение true после выбора режима.

static void update_scene()
{
...

// Disco mode
if (g_disco_mode)
{
bool movement_increase = true;
bool color_increase = true;
float floor = -0.1f;
float ceiling = 1.0f;
float increment = 0.01f;

// Movement of spotlight
if (movement_increase == true && g_lightProperties.direction[0] <= ceiling)
{
g_lightProperties.direction[0] += increment;

if (g_lightProperties.direction[0] >= ceiling) { movement_increase = false; }
}

if (movement_increase == false && g_lightProperties.direction[0] >= floor)
{
g_lightProperties.direction[0] -= increment;

if (g_lightProperties.direction[0] <= floor) { movement_increase = true; }
}

// Changing of color
g_spotlight_ambient[0] += 0.01f;

if (color_increase == true && g_spotlight_ambient[0] <= ceiling)
{
g_spotlight_ambient[0] += increment;

if (g_spotlight_ambient[0] >= ceiling) { color_increase = false; }
}

if (color_increase == false && g_spotlight_ambient[0] >= floor)
{
g_spotlight_ambient[0] -= increment;

if (g_spotlight_ambient[0] <= floor) { color_increase = true; }
}
}
}

Я написал этот раздел кода так, что сфера будет двигаться прямо, пока не достигнет ceiling а затем двигаться влево, пока не достигнет floor, Это делается путем увеличения и уменьшения g_lightProperties.direction,
Смена цвета работает аналогичным образом. Однако, когда я запускаю свою программу, сфера движется прямо, пока не достигнет ceiling а затем останавливается. Он не двигается, двигается влево. Что касается цвета, он просто продолжает краснеть и не становится синим. Почему это так?

Моя программа

// Values for spotlight
glm::vec3 g_spotlight_ambient(0.2f, 0.2f, 0.2f);
glm::vec3 g_spotlight_diffuse(0.0f, 0.5f, 1.0f);
glm::vec3 g_spotlight_specular(0.0f, 0.5f, 1.0f);

bool g_switchOn = true;     // toggle the light on/off
bool g_disco_mode = false;  // makes the lights move around and change color

static void init(GLFWwindow* window)
{
...

// initialise light and material properties
g_lightProperties.position = glm::vec4(0.0f, 2.0f, 0.0f, 1.0f);
g_lightProperties.ambient = glm::vec4(g_spotlight_ambient[0], g_spotlight_ambient[1], g_spotlight_ambient[2], 1.0f);
g_lightProperties.diffuse = glm::vec4(g_spotlight_diffuse[0], g_spotlight_diffuse[1], g_spotlight_diffuse[2], 1.0f);
g_lightProperties.specular = glm::vec4(g_spotlight_specular[0], g_spotlight_specular[1], g_spotlight_specular[2], 1.0f);
g_lightProperties.shininess = 10.0f;
g_lightProperties.attenuation = glm::vec3(1.0f, 0.0f, 0.0f);
g_lightProperties.cutoffAngle = 100.0f;
g_lightProperties.direction = glm::vec3(0.0f, -1.0f, 0.0f);

...
}

// function used to update the scene
static void update_scene()
{
static float rotateAngle = 0.0f;
static float cutOffAngle = g_lightProperties.cutoffAngle;

rotateAngle -= 1.0f;

// update model matrix
g_modelMatrix_mesh[0] = glm::rotate(glm::radians(rotateAngle), glm::vec3(0.0f, 1.0f, 0.0f))
* glm::translate(glm::vec3(-0.4f, 0.1f, 0.0f)) * glm::scale(glm::vec3(0.3f, 0.3f, 0.3f));
g_modelMatrix_mesh[1] = glm::rotate(glm::radians(rotateAngle), glm::vec3(0.0f, 1.0f, 0.0f))
* glm::translate(glm::vec3(0.4f, 0.3f, 0.0f)) * glm::scale(glm::vec3(0.2f, 0.2f, 0.2f));
g_modelMatrix_mesh[2] = glm::translate(g_lightProperties.direction)
* glm::translate(glm::vec3(0.0f, 2.0f, 0.0f)) * glm::scale(glm::vec3(0.2f, 0.2f, 0.2f));

// update spotlight
g_lightProperties.ambient = glm::vec4(g_spotlight_ambient[0], g_spotlight_ambient[1], g_spotlight_ambient[2], 1.0f);
g_lightProperties.diffuse = glm::vec4(g_spotlight_diffuse[0], g_spotlight_diffuse[1], g_spotlight_diffuse[2], 1.0f);
g_lightProperties.specular = glm::vec4(g_spotlight_specular[0], g_spotlight_specular[1], g_spotlight_specular[2], 1.0f);

// Disco mode
if (g_disco_mode)
{
bool movement_increase = true;
bool color_increase = true;
float floor = -0.1f;
float ceiling = 1.0f;
float increment = 0.01f;

// Movement of spotlight
if (movement_increase == true && g_lightProperties.direction[0] <= ceiling)
{
g_lightProperties.direction[0] += increment;

if (g_lightProperties.direction[0] >= ceiling) { movement_increase = false; }
}

if (movement_increase == false && g_lightProperties.direction[0] >= floor)
{
g_lightProperties.direction[0] -= increment;

if (g_lightProperties.direction[0] <= floor) { movement_increase = true; }
}

// Changing of color
g_spotlight_ambient[0] += 0.01f;

if (color_increase == true && g_spotlight_ambient[0] <= ceiling)
{
g_spotlight_ambient[0] += increment;

if (g_spotlight_ambient[0] >= ceiling) { color_increase = false; }
}

if (color_increase == false && g_spotlight_ambient[0] >= floor)
{
g_spotlight_ambient[0] -= increment;

if (g_spotlight_ambient[0] <= floor) { color_increase = true; }
}
}

}

// function used to render the scene
static void render_scene()
{
glBindVertexArray(g_VAO[0]);        // make VAO active

// Material Properties - Planes
glUniform4fv(g_materialAmbientIndex, 1, &g_materialProperties.ambient[0]);
glUniform4fv(g_materialDiffuseIndex, 1, &g_materialProperties.diffuse[0]);
glUniform4fv(g_materialSpecularIndex, 1, &g_materialProperties.specular[0]);

glUniform4fv(g_lightPositionIndex, 1, &g_lightProperties.position[0]);
glUniform4fv(g_lightAmbientIndex, 1, &g_lightProperties.ambient[0]);
glUniform4fv(g_lightDiffuseIndex, 1, &g_lightProperties.diffuse[0]);
glUniform4fv(g_lightSpecularIndex, 1, &g_lightProperties.specular[0]);
glUniform1fv(g_lightShininessIndex, 1, &g_lightProperties.shininess);
glUniform3fv(g_lightAttenuationIndex, 1, &g_lightProperties.attenuation[0]);
glUniform1fv(g_lightCutoffAngleIndex, 1, &g_lightProperties.cutoffAngle);
glUniform3fv(g_lightDirectionIndex, 1, &g_lightProperties.direction[0]);

...
}

int main(void)
{
TwBar *TweakBar;            // pointer to a tweak bar

...

// initialise AntTweakBar
TwInit(TW_OPENGL_CORE, NULL);

// give tweak bar the size of graphics window
TwWindowSize(g_windowWidth, g_windowHeight);
TwDefine(" TW_HELP visible=false ");    // disable help menu
TwDefine(" GLOBAL fontsize=3 ");        // set large font size

// create a tweak bar
TweakBar = TwNewBar("Main");
TwDefine(" Main label='Controls' refresh=0.02 text=light size='220 600' ");

// create display entries
TwAddVarRW(TweakBar, "Wireframe", TW_TYPE_BOOLCPP, &g_wireFrame, " group='Display' ");

// display a separator
TwAddSeparator(TweakBar, NULL, NULL);

// create spotlight entries
TwAddVarRW(TweakBar, "Cutoff", TW_TYPE_FLOAT, &g_lightProperties.cutoffAngle, " group='Spotlight' min=-180.0 max=180.0 step=1.0 ");
TwAddVarRW(TweakBar, "Direction: x", TW_TYPE_FLOAT, &g_lightProperties.direction[0], " group='Spotlight' min=-1.0 max=1.0 step=0.1");
TwAddVarRW(TweakBar, "Direction: y", TW_TYPE_FLOAT, &g_lightProperties.direction[1], " group='Spotlight' min=-1.0 max=1.0 step=0.1");
TwAddVarRW(TweakBar, "Direction: z", TW_TYPE_FLOAT, &g_lightProperties.direction[2], " group='Spotlight' min=-1.0 max=1.0 step=0.1");
// create transformation entries
TwAddVarRW(TweakBar, "A Red", TW_TYPE_FLOAT, &g_spotlight_ambient[0], " group='Ambient' min=-1.0 max=1.0 step=0.01");
TwAddVarRW(TweakBar, "A Green", TW_TYPE_FLOAT, &g_spotlight_ambient[1], " group='Ambient' min=-1.0 max=1.0 step=0.01");
TwAddVarRW(TweakBar, "A Blue", TW_TYPE_FLOAT, &g_spotlight_ambient[2], " group='Ambient' min=-1.0 max=1.0 step=0.01");

TwAddVarRW(TweakBar, "D Red", TW_TYPE_FLOAT, &g_spotlight_diffuse[0], " group='Diffuse' min=-1.0 max=1.0 step=0.01");
TwAddVarRW(TweakBar, "D Green", TW_TYPE_FLOAT, &g_spotlight_diffuse[1], " group='Diffuse' min=-1.0 max=1.0 step=0.01");
TwAddVarRW(TweakBar, "D Blue", TW_TYPE_FLOAT, &g_spotlight_diffuse[2], " group='Diffuse' min=-1.0 max=1.0 step=0.01");

TwAddVarRW(TweakBar, "S Red", TW_TYPE_FLOAT, &g_spotlight_specular[0], " group='Specular' min=-1.0 max=1.0 step=0.01");
TwAddVarRW(TweakBar, "S Green", TW_TYPE_FLOAT, &g_spotlight_specular[1], " group='Specular' min=-1.0 max=1.0 step=0.01");
TwAddVarRW(TweakBar, "S Blue", TW_TYPE_FLOAT, &g_spotlight_specular[2], " group='Specular' min=-1.0 max=1.0 step=0.01");

TwAddVarRW(TweakBar, "Light", TW_TYPE_BOOLCPP, &g_switchOn, " group='Toggle ON/OFF' ");
TwAddVarRW(TweakBar, "Disco", TW_TYPE_BOOLCPP, &g_disco_mode, " group='Toggle ON/OFF' ");

// initialise rendering states
init(window);

// the rendering loop
while (!glfwWindowShouldClose(window))
{
g_camera.update(window);    // update camera

if (g_wireFrame)
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);

update_scene();     // update the scene
render_scene();     // render the scene

glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);

TwDraw();           // draw tweak bar(s)

glfwSwapBuffers(window);    // swap buffers
glfwPollEvents();           // poll for events
}

...
}