struct nodeInstanceData *nodeInstanceInit(void)
{
struct nodeInstanceData *context = (struct nodeInstanceData *)malloc(sizeof(struct nodeInstanceData));
context->glContext = VuoGlContext_use();
context->sceneRenderer = VuoSceneRenderer_make(context->glContext);
VuoRetain(context->sceneRenderer);
VuoRegister(context, free);
return context;
}
struct nodeInstanceData * nodeInstanceInit(void)
{
struct nodeInstanceData * instance = (struct nodeInstanceData *)malloc(sizeof(struct nodeInstanceData));
VuoRegister(instance, free);
instance->glContext = VuoGlContext_use();
instance->imageRenderer = VuoImageRenderer_make(instance->glContext);
VuoRetain(instance->imageRenderer);
return instance;
}
struct nodeInstanceData * nodeInstanceInit(void)
{
struct nodeInstanceData * instance = (struct nodeInstanceData *)malloc(sizeof(struct nodeInstanceData));
VuoRegister(instance, free);
instance->glContext = VuoGlContext_use();
instance->imageRenderer = VuoImageRenderer_make(instance->glContext);
VuoRetain(instance->imageRenderer);
instance->shader = VuoShader_makeUnlitColorShader( VuoColor_makeWithRGBA(1.,1.,1.,1.) );
VuoRetain(instance->shader);
return instance;
}
struct nodeInstanceData * nodeInstanceInit(void)
{
struct nodeInstanceData * instance = (struct nodeInstanceData *)malloc(sizeof(struct nodeInstanceData));
VuoRegister(instance, free);
instance->glContext = VuoGlContext_use();
instance->imageRenderer = VuoImageRenderer_make(instance->glContext);
VuoRetain(instance->imageRenderer);
VuoList_VuoColor colors = VuoListCreate_VuoColor();
VuoRetain(colors);
instance->shader = VuoShader_makeRadialGradientShader(colors, VuoPoint2d_make(0., 0.), 1., 1., 1.);
VuoRetain(instance->shader);
VuoRelease(colors);
return instance;
}
/**
* Returns a color-mapped copy of @a image. (Or, if @a colors is empty, returns @a image.)
*/
VuoImage VuoImage_mapColors(VuoImage image, VuoList_VuoColor colors, VuoReal filterOpacity)
{
if (!image)
return NULL;
if (!colors)
return image;
VuoGlContext glContext = VuoGlContext_use();
VuoImageRenderer imageRenderer = VuoImageRenderer_make(glContext);
VuoRetain(imageRenderer);
static const char * fragmentShaderSource = VUOSHADER_GLSL_SOURCE(120,
uniform float gradientCount;
uniform sampler2D image; // the unfiltered image
uniform sampler2D gradientStrip;// the gradient strip to map against
uniform float amount; // the amount to mix gradient and image
varying vec4 fragmentTextureCoordinate;
// https://stackoverflow.com/questions/596216/formula-to-determine-brightness-of-rgb-color
float brightness(vec3 col)
{
// Digital CCIR601 (gives more weight to the green and red components):
return 0.299*col.r + 0.587*col.g + 0.114*col.b;
}
void main(void)
{
vec4 orig = texture2D(image, fragmentTextureCoordinate.xy);
float lum = brightness(orig.rgb);
float gradientWidth = (1./gradientCount)/2.;
lum = lum * (1-gradientWidth*2) + gradientWidth;
vec4 color = texture2D(gradientStrip, vec2(clamp(lum, gradientWidth, 1-gradientWidth), .5));
gl_FragColor = mix(orig, color, amount) * orig.a;
}
context->serverName = newServerName;
VuoRetain(context->serverName);
VuoSyphonServer_setName(context->syphonServer, newServerName);
}
struct nodeInstanceData * nodeInstanceInit
(
VuoInputData(VuoText, "") serverName
)
{
struct nodeInstanceData *context = (struct nodeInstanceData *)calloc(1,sizeof(struct nodeInstanceData));
VuoRegister(context, free);
context->glContext = VuoGlContext_use();
context->syphonServer = VuoSyphonServer_make(serverName, context->glContext);
VuoRetain(context->syphonServer);
return context;
}
void nodeInstanceEvent
(
VuoInputData(VuoText, "") serverName,
VuoInputData(VuoImage) sendImage,
VuoInputEvent({"eventBlocking":"none","data":"sendImage"}) sendImageEvent,
VuoInstanceData(struct nodeInstanceData *) context
)
{
