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blender-archive/source/blender/blenlib/intern/rct.c
Campbell Barton c434782e3a File headers: SPDX License migration 
Use a shorter/simpler license convention, stops the header taking so
much space.

Follow the SPDX license specification: https://spdx.org/licenses

- C/C++/objc/objc++
- Python
- Shell Scripts
- CMake, GNUmakefile

While most of the source tree has been included

- `./extern/` was left out.
- `./intern/cycles` & `./intern/atomic` are also excluded because they
  use different header conventions.

doc/license/SPDX-license-identifiers.txt has been added to list SPDX all
used identifiers.

See P2788 for the script that automated these edits.

Reviewed By: brecht, mont29, sergey

Ref D14069
2022-02-11 09:14:36 +11:00

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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2001-2002 NaN Holding BV. All rights reserved. */
/** \file
* \ingroup bli
*
* A minimalist lib for functions doing stuff with rectangle structs.
*/
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <float.h>
#include <limits.h>
#include "BLI_math_base.h"
#include "BLI_rect.h"
#include "BLI_utildefines.h"
#include "DNA_vec_types.h"
/* avoid including BLI_math */
static void unit_m4(float m[4][4]);
bool BLI_rcti_is_empty(const rcti *rect)
{
return ((rect->xmax <= rect->xmin) || (rect->ymax <= rect->ymin));
}
bool BLI_rctf_is_empty(const rctf *rect)
{
return ((rect->xmax <= rect->xmin) || (rect->ymax <= rect->ymin));
}
bool BLI_rcti_isect_x(const rcti *rect, const int x)
{
if (x < rect->xmin) {
return false;
}
if (x > rect->xmax) {
return false;
}
return true;
}
bool BLI_rcti_isect_y(const rcti *rect, const int y)
{
if (y < rect->ymin) {
return false;
}
if (y > rect->ymax) {
return false;
}
return true;
}
bool BLI_rcti_isect_pt(const rcti *rect, const int x, const int y)
{
if (x < rect->xmin) {
return false;
}
if (x > rect->xmax) {
return false;
}
if (y < rect->ymin) {
return false;
}
if (y > rect->ymax) {
return false;
}
return true;
}
bool BLI_rcti_isect_pt_v(const rcti *rect, const int xy[2])
{
if (xy[0] < rect->xmin) {
return false;
}
if (xy[0] > rect->xmax) {
return false;
}
if (xy[1] < rect->ymin) {
return false;
}
if (xy[1] > rect->ymax) {
return false;
}
return true;
}
bool BLI_rctf_isect_x(const rctf *rect, const float x)
{
if (x < rect->xmin) {
return false;
}
if (x > rect->xmax) {
return false;
}
return true;
}
bool BLI_rctf_isect_y(const rctf *rect, const float y)
{
if (y < rect->ymin) {
return false;
}
if (y > rect->ymax) {
return false;
}
return true;
}
bool BLI_rctf_isect_pt(const rctf *rect, const float x, const float y)
{
if (x < rect->xmin) {
return false;
}
if (x > rect->xmax) {
return false;
}
if (y < rect->ymin) {
return false;
}
if (y > rect->ymax) {
return false;
}
return true;
}
bool BLI_rctf_isect_pt_v(const rctf *rect, const float xy[2])
{
if (xy[0] < rect->xmin) {
return false;
}
if (xy[0] > rect->xmax) {
return false;
}
if (xy[1] < rect->ymin) {
return false;
}
if (xy[1] > rect->ymax) {
return false;
}
return true;
}
int BLI_rcti_length_x(const rcti *rect, const int x)
{
if (x < rect->xmin) {
return rect->xmin - x;
}
if (x > rect->xmax) {
return x - rect->xmax;
}
return 0;
}
int BLI_rcti_length_y(const rcti *rect, const int y)
{
if (y < rect->ymin) {
return rect->ymin - y;
}
if (y > rect->ymax) {
return y - rect->ymax;
}
return 0;
}
float BLI_rctf_length_x(const rctf *rect, const float x)
{
if (x < rect->xmin) {
return rect->xmin - x;
}
if (x > rect->xmax) {
return x - rect->xmax;
}
return 0.0f;
}
float BLI_rctf_length_y(const rctf *rect, const float y)
{
if (y < rect->ymin) {
return rect->ymin - y;
}
if (y > rect->ymax) {
return y - rect->ymax;
}
return 0.0f;
}
bool BLI_rctf_inside_rctf(const rctf *rct_a, const rctf *rct_b)
{
return ((rct_a->xmin <= rct_b->xmin) && (rct_a->xmax >= rct_b->xmax) &&
(rct_a->ymin <= rct_b->ymin) && (rct_a->ymax >= rct_b->ymax));
}
bool BLI_rcti_inside_rcti(const rcti *rct_a, const rcti *rct_b)
{
return ((rct_a->xmin <= rct_b->xmin) && (rct_a->xmax >= rct_b->xmax) &&
(rct_a->ymin <= rct_b->ymin) && (rct_a->ymax >= rct_b->ymax));
}
/* based closely on 'isect_seg_seg_v2_int',
* but in modified so corner cases are treated as intersections */
static int isect_segments_i(const int v1[2], const int v2[2], const int v3[2], const int v4[2])
{
const double div = (double)((v2[0] - v1[0]) * (v4[1] - v3[1]) -
(v2[1] - v1[1]) * (v4[0] - v3[0]));
if (div == 0.0) {
return 1; /* co-linear */
}
const double lambda = (double)((v1[1] - v3[1]) * (v4[0] - v3[0]) -
(v1[0] - v3[0]) * (v4[1] - v3[1])) /
div;
const double mu = (double)((v1[1] - v3[1]) * (v2[0] - v1[0]) -
(v1[0] - v3[0]) * (v2[1] - v1[1])) /
div;
return (lambda >= 0.0 && lambda <= 1.0 && mu >= 0.0 && mu <= 1.0);
}
static int isect_segments_fl(const float v1[2],
const float v2[2],
const float v3[2],
const float v4[2])
{
const double div = (double)((v2[0] - v1[0]) * (v4[1] - v3[1]) -
(v2[1] - v1[1]) * (v4[0] - v3[0]));
if (div == 0.0) {
return 1; /* co-linear */
}
const double lambda = (double)((v1[1] - v3[1]) * (v4[0] - v3[0]) -
(v1[0] - v3[0]) * (v4[1] - v3[1])) /
div;
const double mu = (double)((v1[1] - v3[1]) * (v2[0] - v1[0]) -
(v1[0] - v3[0]) * (v2[1] - v1[1])) /
div;
return (lambda >= 0.0 && lambda <= 1.0 && mu >= 0.0 && mu <= 1.0);
}
bool BLI_rcti_isect_segment(const rcti *rect, const int s1[2], const int s2[2])
{
/* first do outside-bounds check for both points of the segment */
if (s1[0] < rect->xmin && s2[0] < rect->xmin) {
return false;
}
if (s1[0] > rect->xmax && s2[0] > rect->xmax) {
return false;
}
if (s1[1] < rect->ymin && s2[1] < rect->ymin) {
return false;
}
if (s1[1] > rect->ymax && s2[1] > rect->ymax) {
return false;
}
/* if either points intersect then we definitely intersect */
if (BLI_rcti_isect_pt_v(rect, s1) || BLI_rcti_isect_pt_v(rect, s2)) {
return true;
}
/* both points are outside but may intersect the rect */
int tvec1[2];
int tvec2[2];
/* diagonal: [/] */
tvec1[0] = rect->xmin;
tvec1[1] = rect->ymin;
tvec2[0] = rect->xmin;
tvec2[1] = rect->ymax;
if (isect_segments_i(s1, s2, tvec1, tvec2)) {
return true;
}
/* diagonal: [\] */
tvec1[0] = rect->xmin;
tvec1[1] = rect->ymax;
tvec2[0] = rect->xmax;
tvec2[1] = rect->ymin;
if (isect_segments_i(s1, s2, tvec1, tvec2)) {
return true;
}
/* no intersection */
return false;
}
bool BLI_rctf_isect_segment(const rctf *rect, const float s1[2], const float s2[2])
{
/* first do outside-bounds check for both points of the segment */
if (s1[0] < rect->xmin && s2[0] < rect->xmin) {
return false;
}
if (s1[0] > rect->xmax && s2[0] > rect->xmax) {
return false;
}
if (s1[1] < rect->ymin && s2[1] < rect->ymin) {
return false;
}
if (s1[1] > rect->ymax && s2[1] > rect->ymax) {
return false;
}
/* if either points intersect then we definitely intersect */
if (BLI_rctf_isect_pt_v(rect, s1) || BLI_rctf_isect_pt_v(rect, s2)) {
return true;
}
/* both points are outside but may intersect the rect */
float tvec1[2];
float tvec2[2];
/* diagonal: [/] */
tvec1[0] = rect->xmin;
tvec1[1] = rect->ymin;
tvec2[0] = rect->xmin;
tvec2[1] = rect->ymax;
if (isect_segments_fl(s1, s2, tvec1, tvec2)) {
return true;
}
/* diagonal: [\] */
tvec1[0] = rect->xmin;
tvec1[1] = rect->ymax;
tvec2[0] = rect->xmax;
tvec2[1] = rect->ymin;
if (isect_segments_fl(s1, s2, tvec1, tvec2)) {
return true;
}
/* no intersection */
return false;
}
bool BLI_rcti_isect_circle(const rcti *rect, const float xy[2], const float radius)
{
float dx, dy;
if (xy[0] >= rect->xmin && xy[0] <= rect->xmax) {
dx = 0;
}
else {
dx = (xy[0] < rect->xmin) ? (rect->xmin - xy[0]) : (xy[0] - rect->xmax);
}
if (xy[1] >= rect->ymin && xy[1] <= rect->ymax) {
dy = 0;
}
else {
dy = (xy[1] < rect->ymin) ? (rect->ymin - xy[1]) : (xy[1] - rect->ymax);
}
return dx * dx + dy * dy <= radius * radius;
}
bool BLI_rctf_isect_circle(const rctf *rect, const float xy[2], const float radius)
{
float dx, dy;
if (xy[0] >= rect->xmin && xy[0] <= rect->xmax) {
dx = 0;
}
else {
dx = (xy[0] < rect->xmin) ? (rect->xmin - xy[0]) : (xy[0] - rect->xmax);
}
if (xy[1] >= rect->ymin && xy[1] <= rect->ymax) {
dy = 0;
}
else {
dy = (xy[1] < rect->ymin) ? (rect->ymin - xy[1]) : (xy[1] - rect->ymax);
}
return dx * dx + dy * dy <= radius * radius;
}
void BLI_rctf_union(rctf *rct_a, const rctf *rct_b)
{
if (rct_a->xmin > rct_b->xmin) {
rct_a->xmin = rct_b->xmin;
}
if (rct_a->xmax < rct_b->xmax) {
rct_a->xmax = rct_b->xmax;
}
if (rct_a->ymin > rct_b->ymin) {
rct_a->ymin = rct_b->ymin;
}
if (rct_a->ymax < rct_b->ymax) {
rct_a->ymax = rct_b->ymax;
}
}
void BLI_rcti_union(rcti *rct_a, const rcti *rct_b)
{
if (rct_a->xmin > rct_b->xmin) {
rct_a->xmin = rct_b->xmin;
}
if (rct_a->xmax < rct_b->xmax) {
rct_a->xmax = rct_b->xmax;
}
if (rct_a->ymin > rct_b->ymin) {
rct_a->ymin = rct_b->ymin;
}
if (rct_a->ymax < rct_b->ymax) {
rct_a->ymax = rct_b->ymax;
}
}
void BLI_rctf_init(rctf *rect, float xmin, float xmax, float ymin, float ymax)
{
rect->xmin = xmin;
rect->xmax = xmax;
rect->ymin = ymin;
rect->ymax = ymax;
BLI_rctf_sanitize(rect);
}
void BLI_rcti_init(rcti *rect, int xmin, int xmax, int ymin, int ymax)
{
rect->xmin = xmin;
rect->xmax = xmax;
rect->ymin = ymin;
rect->ymax = ymax;
BLI_rcti_sanitize(rect);
}
bool BLI_rctf_is_valid(const rctf *rect)
{
return (rect->xmin <= rect->xmax) && (rect->ymin <= rect->ymax);
}
bool BLI_rcti_is_valid(const rcti *rect)
{
return (rect->xmin <= rect->xmax) && (rect->ymin <= rect->ymax);
}
void BLI_rctf_sanitize(rctf *rect)
{
if (rect->xmin > rect->xmax) {
SWAP(float, rect->xmin, rect->xmax);
}
if (rect->ymin > rect->ymax) {
SWAP(float, rect->ymin, rect->ymax);
}
BLI_assert(BLI_rctf_is_valid(rect));
}
void BLI_rcti_sanitize(rcti *rect)
{
if (rect->xmin > rect->xmax) {
SWAP(int, rect->xmin, rect->xmax);
}
if (rect->ymin > rect->ymax) {
SWAP(int, rect->ymin, rect->ymax);
}
BLI_assert(BLI_rcti_is_valid(rect));
}
void BLI_rctf_init_pt_radius(rctf *rect, const float xy[2], float size)
{
rect->xmin = xy[0] - size;
rect->xmax = xy[0] + size;
rect->ymin = xy[1] - size;
rect->ymax = xy[1] + size;
}
void BLI_rcti_init_pt_radius(rcti *rect, const int xy[2], int size)
{
rect->xmin = xy[0] - size;
rect->xmax = xy[0] + size;
rect->ymin = xy[1] - size;
rect->ymax = xy[1] + size;
}
void BLI_rcti_init_minmax(rcti *rect)
{
rect->xmin = rect->ymin = INT_MAX;
rect->xmax = rect->ymax = INT_MIN;
}
void BLI_rctf_init_minmax(rctf *rect)
{
rect->xmin = rect->ymin = FLT_MAX;
rect->xmax = rect->ymax = -FLT_MAX;
}
void BLI_rcti_do_minmax_v(rcti *rect, const int xy[2])
{
if (xy[0] < rect->xmin) {
rect->xmin = xy[0];
}
if (xy[0] > rect->xmax) {
rect->xmax = xy[0];
}
if (xy[1] < rect->ymin) {
rect->ymin = xy[1];
}
if (xy[1] > rect->ymax) {
rect->ymax = xy[1];
}
}
void BLI_rcti_do_minmax_rcti(rcti *rect, const rcti *other)
{
rect->xmin = min_ii(rect->xmin, other->xmin);
rect->xmax = max_ii(rect->xmax, other->xmax);
rect->ymin = min_ii(rect->ymin, other->ymin);
rect->ymax = max_ii(rect->ymax, other->ymax);
}
void BLI_rctf_do_minmax_v(rctf *rect, const float xy[2])
{
if (xy[0] < rect->xmin) {
rect->xmin = xy[0];
}
if (xy[0] > rect->xmax) {
rect->xmax = xy[0];
}
if (xy[1] < rect->ymin) {
rect->ymin = xy[1];
}
if (xy[1] > rect->ymax) {
rect->ymax = xy[1];
}
}
void BLI_rctf_transform_pt_v(const rctf *dst,
const rctf *src,
float xy_dst[2],
const float xy_src[2])
{
xy_dst[0] = ((xy_src[0] - src->xmin) / (src->xmax - src->xmin));
xy_dst[0] = dst->xmin + ((dst->xmax - dst->xmin) * xy_dst[0]);
xy_dst[1] = ((xy_src[1] - src->ymin) / (src->ymax - src->ymin));
xy_dst[1] = dst->ymin + ((dst->ymax - dst->ymin) * xy_dst[1]);
}
void BLI_rctf_transform_calc_m4_pivot_min_ex(
const rctf *dst, const rctf *src, float matrix[4][4], uint x, uint y)
{
BLI_assert(x < 3 && y < 3);
unit_m4(matrix);
matrix[x][x] = BLI_rctf_size_x(src) / BLI_rctf_size_x(dst);
matrix[y][y] = BLI_rctf_size_y(src) / BLI_rctf_size_y(dst);
matrix[3][x] = (src->xmin - dst->xmin) * matrix[x][x];
matrix[3][y] = (src->ymin - dst->ymin) * matrix[y][y];
}
void BLI_rctf_transform_calc_m4_pivot_min(const rctf *dst, const rctf *src, float matrix[4][4])
{
BLI_rctf_transform_calc_m4_pivot_min_ex(dst, src, matrix, 0, 1);
}
void BLI_rcti_translate(rcti *rect, int x, int y)
{
rect->xmin += x;
rect->ymin += y;
rect->xmax += x;
rect->ymax += y;
}
void BLI_rctf_translate(rctf *rect, float x, float y)
{
rect->xmin += x;
rect->ymin += y;
rect->xmax += x;
rect->ymax += y;
}
void BLI_rcti_recenter(rcti *rect, int x, int y)
{
const int dx = x - BLI_rcti_cent_x(rect);
const int dy = y - BLI_rcti_cent_y(rect);
BLI_rcti_translate(rect, dx, dy);
}
void BLI_rctf_recenter(rctf *rect, float x, float y)
{
const float dx = x - BLI_rctf_cent_x(rect);
const float dy = y - BLI_rctf_cent_y(rect);
BLI_rctf_translate(rect, dx, dy);
}
void BLI_rcti_resize_x(rcti *rect, int x)
{
rect->xmin = BLI_rcti_cent_x(rect) - (x / 2);
rect->xmax = rect->xmin + x;
}
void BLI_rcti_resize_y(rcti *rect, int y)
{
rect->ymin = BLI_rcti_cent_y(rect) - (y / 2);
rect->ymax = rect->ymin + y;
}
void BLI_rcti_resize(rcti *rect, int x, int y)
{
rect->xmin = BLI_rcti_cent_x(rect) - (x / 2);
rect->ymin = BLI_rcti_cent_y(rect) - (y / 2);
rect->xmax = rect->xmin + x;
rect->ymax = rect->ymin + y;
}
void BLI_rcti_pad(rcti *rect, int pad_x, int pad_y)
{
rect->xmin -= pad_x;
rect->ymin -= pad_y;
rect->xmax += pad_x;
rect->ymax += pad_y;
}
void BLI_rctf_pad(rctf *rect, float pad_x, float pad_y)
{
rect->xmin -= pad_x;
rect->ymin -= pad_y;
rect->xmax += pad_x;
rect->ymax += pad_y;
}
void BLI_rctf_resize_x(rctf *rect, float x)
{
rect->xmin = BLI_rctf_cent_x(rect) - (x * 0.5f);
rect->xmax = rect->xmin + x;
}
void BLI_rctf_resize_y(rctf *rect, float y)
{
rect->ymin = BLI_rctf_cent_y(rect) - (y * 0.5f);
rect->ymax = rect->ymin + y;
}
void BLI_rctf_resize(rctf *rect, float x, float y)
{
rect->xmin = BLI_rctf_cent_x(rect) - (x * 0.5f);
rect->ymin = BLI_rctf_cent_y(rect) - (y * 0.5f);
rect->xmax = rect->xmin + x;
rect->ymax = rect->ymin + y;
}
void BLI_rcti_scale(rcti *rect, const float scale)
{
const int cent_x = BLI_rcti_cent_x(rect);
const int cent_y = BLI_rcti_cent_y(rect);
const int size_x_half = BLI_rcti_size_x(rect) * (scale * 0.5f);
const int size_y_half = BLI_rcti_size_y(rect) * (scale * 0.5f);
rect->xmin = cent_x - size_x_half;
rect->ymin = cent_y - size_y_half;
rect->xmax = cent_x + size_x_half;
rect->ymax = cent_y + size_y_half;
}
void BLI_rctf_scale(rctf *rect, const float scale)
{
const float cent_x = BLI_rctf_cent_x(rect);
const float cent_y = BLI_rctf_cent_y(rect);
const float size_x_half = BLI_rctf_size_x(rect) * (scale * 0.5f);
const float size_y_half = BLI_rctf_size_y(rect) * (scale * 0.5f);
rect->xmin = cent_x - size_x_half;
rect->ymin = cent_y - size_y_half;
rect->xmax = cent_x + size_x_half;
rect->ymax = cent_y + size_y_half;
}
void BLI_rctf_pad_y(rctf *rect,
const float boundary_size,
const float pad_min,
const float pad_max)
{
BLI_assert(pad_max >= 0.0f);
BLI_assert(pad_min >= 0.0f);
BLI_assert(boundary_size > 0.0f);
float total_pad = pad_max + pad_min;
if (total_pad == 0.0f) {
return;
}
float total_extend = BLI_rctf_size_y(rect) * total_pad / (boundary_size - total_pad);
rect->ymax += total_extend * (pad_max / total_pad);
rect->ymin -= total_extend * (pad_min / total_pad);
}
void BLI_rctf_interp(rctf *rect, const rctf *rect_a, const rctf *rect_b, const float fac)
{
const float ifac = 1.0f - fac;
rect->xmin = (rect_a->xmin * ifac) + (rect_b->xmin * fac);
rect->xmax = (rect_a->xmax * ifac) + (rect_b->xmax * fac);
rect->ymin = (rect_a->ymin * ifac) + (rect_b->ymin * fac);
rect->ymax = (rect_a->ymax * ifac) + (rect_b->ymax * fac);
}
/* BLI_rcti_interp() not needed yet */
bool BLI_rctf_clamp_pt_v(const rctf *rect, float xy[2])
{
bool changed = false;
if (xy[0] < rect->xmin) {
xy[0] = rect->xmin;
changed = true;
}
if (xy[0] > rect->xmax) {
xy[0] = rect->xmax;
changed = true;
}
if (xy[1] < rect->ymin) {
xy[1] = rect->ymin;
changed = true;
}
if (xy[1] > rect->ymax) {
xy[1] = rect->ymax;
changed = true;
}
return changed;
}
bool BLI_rcti_clamp_pt_v(const rcti *rect, int xy[2])
{
bool changed = false;
if (xy[0] < rect->xmin) {
xy[0] = rect->xmin;
changed = true;
}
if (xy[0] > rect->xmax) {
xy[0] = rect->xmax;
changed = true;
}
if (xy[1] < rect->ymin) {
xy[1] = rect->ymin;
changed = true;
}
if (xy[1] > rect->ymax) {
xy[1] = rect->ymax;
changed = true;
}
return changed;
}
bool BLI_rctf_clamp(rctf *rect, const rctf *rect_bounds, float r_xy[2])
{
bool changed = false;
r_xy[0] = 0.0f;
r_xy[1] = 0.0f;
if (rect->xmax > rect_bounds->xmax) {
float ofs = rect_bounds->xmax - rect->xmax;
rect->xmin += ofs;
rect->xmax += ofs;
r_xy[0] += ofs;
changed = true;
}
if (rect->xmin < rect_bounds->xmin) {
float ofs = rect_bounds->xmin - rect->xmin;
rect->xmin += ofs;
rect->xmax += ofs;
r_xy[0] += ofs;
changed = true;
}
if (rect->ymin < rect_bounds->ymin) {
float ofs = rect_bounds->ymin - rect->ymin;
rect->ymin += ofs;
rect->ymax += ofs;
r_xy[1] += ofs;
changed = true;
}
if (rect->ymax > rect_bounds->ymax) {
float ofs = rect_bounds->ymax - rect->ymax;
rect->ymin += ofs;
rect->ymax += ofs;
r_xy[1] += ofs;
changed = true;
}
return changed;
}
bool BLI_rcti_clamp(rcti *rect, const rcti *rect_bounds, int r_xy[2])
{
bool changed = false;
r_xy[0] = 0;
r_xy[1] = 0;
if (rect->xmax > rect_bounds->xmax) {
int ofs = rect_bounds->xmax - rect->xmax;
rect->xmin += ofs;
rect->xmax += ofs;
r_xy[0] += ofs;
changed = true;
}
if (rect->xmin < rect_bounds->xmin) {
int ofs = rect_bounds->xmin - rect->xmin;
rect->xmin += ofs;
rect->xmax += ofs;
r_xy[0] += ofs;
changed = true;
}
if (rect->ymin < rect_bounds->ymin) {
int ofs = rect_bounds->ymin - rect->ymin;
rect->ymin += ofs;
rect->ymax += ofs;
r_xy[1] += ofs;
changed = true;
}
if (rect->ymax > rect_bounds->ymax) {
int ofs = rect_bounds->ymax - rect->ymax;
rect->ymin += ofs;
rect->ymax += ofs;
r_xy[1] += ofs;
changed = true;
}
return changed;
}
bool BLI_rctf_compare(const rctf *rect_a, const rctf *rect_b, const float limit)
{
if (fabsf(rect_a->xmin - rect_b->xmin) < limit) {
if (fabsf(rect_a->xmax - rect_b->xmax) < limit) {
if (fabsf(rect_a->ymin - rect_b->ymin) < limit) {
if (fabsf(rect_a->ymax - rect_b->ymax) < limit) {
return true;
}
}
}
}
return false;
}
bool BLI_rcti_compare(const rcti *rect_a, const rcti *rect_b)
{
if (rect_a->xmin == rect_b->xmin) {
if (rect_a->xmax == rect_b->xmax) {
if (rect_a->ymin == rect_b->ymin) {
if (rect_a->ymax == rect_b->ymax) {
return true;
}
}
}
}
return false;
}
bool BLI_rctf_isect(const rctf *src1, const rctf *src2, rctf *dest)
{
float xmin, xmax;
float ymin, ymax;
xmin = (src1->xmin) > (src2->xmin) ? (src1->xmin) : (src2->xmin);
xmax = (src1->xmax) < (src2->xmax) ? (src1->xmax) : (src2->xmax);
ymin = (src1->ymin) > (src2->ymin) ? (src1->ymin) : (src2->ymin);
ymax = (src1->ymax) < (src2->ymax) ? (src1->ymax) : (src2->ymax);
if (xmax >= xmin && ymax >= ymin) {
if (dest) {
dest->xmin = xmin;
dest->xmax = xmax;
dest->ymin = ymin;
dest->ymax = ymax;
}
return true;
}
if (dest) {
dest->xmin = 0;
dest->xmax = 0;
dest->ymin = 0;
dest->ymax = 0;
}
return false;
}
bool BLI_rcti_isect(const rcti *src1, const rcti *src2, rcti *dest)
{
int xmin, xmax;
int ymin, ymax;
xmin = (src1->xmin) > (src2->xmin) ? (src1->xmin) : (src2->xmin);
xmax = (src1->xmax) < (src2->xmax) ? (src1->xmax) : (src2->xmax);
ymin = (src1->ymin) > (src2->ymin) ? (src1->ymin) : (src2->ymin);
ymax = (src1->ymax) < (src2->ymax) ? (src1->ymax) : (src2->ymax);
if (xmax >= xmin && ymax >= ymin) {
if (dest) {
dest->xmin = xmin;
dest->xmax = xmax;
dest->ymin = ymin;
dest->ymax = ymax;
}
return true;
}
if (dest) {
dest->xmin = 0;
dest->xmax = 0;
dest->ymin = 0;
dest->ymax = 0;
}
return false;
}
bool BLI_rctf_isect_rect_x(const rctf *src1, const rctf *src2, float range_x[2])
{
const float xmin = (src1->xmin) > (src2->xmin) ? (src1->xmin) : (src2->xmin);
const float xmax = (src1->xmax) < (src2->xmax) ? (src1->xmax) : (src2->xmax);
if (xmax >= xmin) {
if (range_x) {
range_x[0] = xmin;
range_x[1] = xmax;
}
return true;
}
if (range_x) {
range_x[0] = 0;
range_x[1] = 0;
}
return false;
}
bool BLI_rctf_isect_rect_y(const rctf *src1, const rctf *src2, float range_y[2])
{
const float ymin = (src1->ymin) > (src2->ymin) ? (src1->ymin) : (src2->ymin);
const float ymax = (src1->ymax) < (src2->ymax) ? (src1->ymax) : (src2->ymax);
if (ymax >= ymin) {
if (range_y) {
range_y[0] = ymin;
range_y[1] = ymax;
}
return true;
}
if (range_y) {
range_y[0] = 0;
range_y[1] = 0;
}
return false;
}
bool BLI_rcti_isect_rect_x(const rcti *src1, const rcti *src2, int range_x[2])
{
const int xmin = (src1->xmin) > (src2->xmin) ? (src1->xmin) : (src2->xmin);
const int xmax = (src1->xmax) < (src2->xmax) ? (src1->xmax) : (src2->xmax);
if (xmax >= xmin) {
if (range_x) {
range_x[0] = xmin;
range_x[1] = xmax;
}
return true;
}
if (range_x) {
range_x[0] = 0;
range_x[1] = 0;
}
return false;
}
bool BLI_rcti_isect_rect_y(const rcti *src1, const rcti *src2, int range_y[2])
{
const int ymin = (src1->ymin) > (src2->ymin) ? (src1->ymin) : (src2->ymin);
const int ymax = (src1->ymax) < (src2->ymax) ? (src1->ymax) : (src2->ymax);
if (ymax >= ymin) {
if (range_y) {
range_y[0] = ymin;
range_y[1] = ymax;
}
return true;
}
if (range_y) {
range_y[0] = 0;
range_y[1] = 0;
}
return false;
}
void BLI_rcti_rctf_copy(rcti *dst, const rctf *src)
{
dst->xmin = floorf(src->xmin + 0.5f);
dst->xmax = dst->xmin + floorf(BLI_rctf_size_x(src) + 0.5f);
dst->ymin = floorf(src->ymin + 0.5f);
dst->ymax = dst->ymin + floorf(BLI_rctf_size_y(src) + 0.5f);
}
void BLI_rcti_rctf_copy_floor(rcti *dst, const rctf *src)
{
dst->xmin = floorf(src->xmin);
dst->xmax = floorf(src->xmax);
dst->ymin = floorf(src->ymin);
dst->ymax = floorf(src->ymax);
}
void BLI_rcti_rctf_copy_round(rcti *dst, const rctf *src)
{
dst->xmin = floorf(src->xmin + 0.5f);
dst->xmax = floorf(src->xmax + 0.5f);
dst->ymin = floorf(src->ymin + 0.5f);
dst->ymax = floorf(src->ymax + 0.5f);
}
void BLI_rctf_rcti_copy(rctf *dst, const rcti *src)
{
dst->xmin = src->xmin;
dst->xmax = src->xmax;
dst->ymin = src->ymin;
dst->ymax = src->ymax;
}
void print_rctf(const char *str, const rctf *rect)
{
printf("%s: xmin %.8f, xmax %.8f, ymin %.8f, ymax %.8f (%.12fx%.12f)\n",
str,
rect->xmin,
rect->xmax,
rect->ymin,
rect->ymax,
BLI_rctf_size_x(rect),
BLI_rctf_size_y(rect));
}
void print_rcti(const char *str, const rcti *rect)
{
printf("%s: xmin %d, xmax %d, ymin %d, ymax %d (%dx%d)\n",
str,
rect->xmin,
rect->xmax,
rect->ymin,
rect->ymax,
BLI_rcti_size_x(rect),
BLI_rcti_size_y(rect));
}
/* Comprehensive math (float only) */
/* -------------------------------------------------------------------- */
/** \name Rect math functions
* \{ */
#define ROTATE_SINCOS(r_vec, mat2, vec) \
{ \
(r_vec)[0] = (mat2)[1] * (vec)[0] + (+(mat2)[0]) * (vec)[1]; \
(r_vec)[1] = (mat2)[0] * (vec)[0] + (-(mat2)[1]) * (vec)[1]; \
} \
((void)0)
void BLI_rctf_rotate_expand(rctf *dst, const rctf *src, const float angle)
{
const float mat2[2] = {sinf(angle), cosf(angle)};
const float cent[2] = {BLI_rctf_cent_x(src), BLI_rctf_cent_y(src)};
float corner[2], corner_rot[2], corder_max[2];
/* x is same for both corners */
corner[0] = src->xmax - cent[0];
corner[1] = src->ymax - cent[1];
ROTATE_SINCOS(corner_rot, mat2, corner);
corder_max[0] = fabsf(corner_rot[0]);
corder_max[1] = fabsf(corner_rot[1]);
corner[1] *= -1;
ROTATE_SINCOS(corner_rot, mat2, corner);
corder_max[0] = MAX2(corder_max[0], fabsf(corner_rot[0]));
corder_max[1] = MAX2(corder_max[1], fabsf(corner_rot[1]));
dst->xmin = cent[0] - corder_max[0];
dst->xmax = cent[0] + corder_max[0];
dst->ymin = cent[1] - corder_max[1];
dst->ymax = cent[1] + corder_max[1];
}
#undef ROTATE_SINCOS
/** \} */
static void unit_m4(float m[4][4])
{
m[0][0] = m[1][1] = m[2][2] = m[3][3] = 1.0f;
m[0][1] = m[0][2] = m[0][3] = 0.0f;
m[1][0] = m[1][2] = m[1][3] = 0.0f;
m[2][0] = m[2][1] = m[2][3] = 0.0f;
m[3][0] = m[3][1] = m[3][2] = 0.0f;
}
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