68 lines
2.9 KiB
C++
68 lines
2.9 KiB
C++
#include "cropeffect.h"
|
|
|
|
CropEffect::CropEffect(Clip *c) : Effect(c, EFFECT_TYPE_VIDEO, VIDEO_CROP_EFFECT) {
|
|
enable_coords = true;
|
|
|
|
left_field = add_row("Left:")->add_field(EFFECT_FIELD_DOUBLE);
|
|
top_field = add_row("Top:")->add_field(EFFECT_FIELD_DOUBLE);
|
|
right_field = add_row("Right:")->add_field(EFFECT_FIELD_DOUBLE);
|
|
bottom_field = add_row("Bottom:")->add_field(EFFECT_FIELD_DOUBLE);
|
|
|
|
left_field->set_double_minimum_value(0);
|
|
left_field->set_double_maximum_value(100);
|
|
top_field->set_double_minimum_value(0);
|
|
top_field->set_double_maximum_value(100);
|
|
right_field->set_double_minimum_value(0);
|
|
right_field->set_double_maximum_value(100);
|
|
bottom_field->set_double_minimum_value(0);
|
|
bottom_field->set_double_maximum_value(100);
|
|
|
|
connect(left_field, SIGNAL(changed()), this, SLOT(field_changed()));
|
|
connect(top_field, SIGNAL(changed()), this, SLOT(field_changed()));
|
|
connect(right_field, SIGNAL(changed()), this, SLOT(field_changed()));
|
|
connect(bottom_field, SIGNAL(changed()), this, SLOT(field_changed()));
|
|
}
|
|
|
|
void CropEffect::process_coords(double timecode, GLTextureCoords &coords) {
|
|
// store initial coord data
|
|
int left = coords.vertexTopLeftX;
|
|
int top = coords.vertexTopLeftY;
|
|
int right = coords.vertexBottomRightX;
|
|
int bottom = coords.vertexBottomRightY;
|
|
int width = right - left;
|
|
int height = bottom - top;
|
|
|
|
double texLeft = coords.textureTopLeftX;
|
|
double texTop = coords.textureTopLeftY;
|
|
double texRight = coords.textureBottomRightX;
|
|
double texBottom = coords.textureBottomRightY;
|
|
double texWidth = texRight - texLeft;
|
|
double texHeight = texBottom - texTop;
|
|
|
|
// retrieve values
|
|
double left_field_value = (left_field->get_double_value(timecode)*0.01);
|
|
double right_field_value = 1-(right_field->get_double_value(timecode)*0.01);
|
|
double top_field_value = (top_field->get_double_value(timecode)*0.01);
|
|
double bottom_field_value = 1-(bottom_field->get_double_value(timecode)*0.01);
|
|
|
|
// validate values
|
|
if (left_field_value > right_field_value) right_field_value = left_field_value;
|
|
if (top_field_value > bottom_field_value) bottom_field_value = top_field_value;
|
|
|
|
// left
|
|
coords.textureTopLeftX = coords.textureBottomLeftX = texLeft+(left_field_value*texWidth);
|
|
coords.vertexTopLeftX = coords.vertexBottomLeftX = left+(width*left_field_value);
|
|
|
|
// right
|
|
coords.textureTopRightX = coords.textureBottomRightX = texLeft+(right_field_value*texWidth);
|
|
coords.vertexTopRightX = coords.vertexBottomRightX = left+(width*right_field_value);
|
|
|
|
// top
|
|
coords.textureTopLeftY = coords.textureTopRightY = texTop+(top_field_value*texHeight);
|
|
coords.vertexTopLeftY = coords.vertexTopRightY = top+(height*top_field_value);
|
|
|
|
// bottom
|
|
coords.textureBottomLeftY = coords.textureBottomRightY = texTop+(bottom_field_value*texHeight);
|
|
coords.vertexBottomLeftY = coords.vertexBottomRightY = top+(height*bottom_field_value);
|
|
}
|