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# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
import bgl, blf
import bpy, blf
import gpu
from gpu_extras.batch import batch_for_shader
def draw_rect(x, y, width, height, color):
xmax = x + width
ymax = y + height
points = [[x, y], # [x, y]
[x, ymax], # [x, y]
[xmax, ymax], # [x, y]
[xmax, y], # [x, y]
]
indices = ((0, 1, 2), (2, 3, 0))
shader = gpu.shader.from_builtin('2D_UNIFORM_COLOR')
batch = batch_for_shader(shader, 'TRIS', {"pos": points}, indices=indices)
shader.bind()
shader.uniform_float("color", color)
bgl.glEnable(bgl.GL_BLEND)
batch.draw(shader)
def draw_line2d(x1, y1, x2, y2, width, color):
coords = (
(x1, y1), (x2, y2))
indices = (
(0, 1),)
bgl.glEnable(bgl.GL_BLEND)
shader = gpu.shader.from_builtin('2D_UNIFORM_COLOR')
batch = batch_for_shader(shader, 'LINES', {"pos": coords}, indices=indices)
shader.bind()
shader.uniform_float("color", color)
batch.draw(shader)
def draw_lines(vertices, indices, color):
bgl.glEnable(bgl.GL_BLEND)
shader = gpu.shader.from_builtin('3D_UNIFORM_COLOR')
batch = batch_for_shader(shader, 'LINES', {"pos": vertices}, indices=indices)
shader.bind()
shader.uniform_float("color", color)
batch.draw(shader)
def draw_rect_3d(coords, color):
indices = [(0, 1, 2), (2, 3, 0)]
shader = gpu.shader.from_builtin('3D_UNIFORM_COLOR')
batch = batch_for_shader(shader, 'TRIS', {"pos": coords}, indices=indices)
shader.uniform_float("color", color)
batch.draw(shader)
def draw_image(x, y, width, height, image, transparency, crop=(0, 0, 1, 1)):
# draw_rect(x,y, width, height, (.5,0,0,.5))
coords = [
(x, y), (x + width, y),
(x, y + height), (x + width, y + height)]
uvs = [(crop[0], crop[1]),
(crop[2], crop[1]),
(crop[0], crop[3]),
(crop[2], crop[3]),
]
indices = [(0, 1, 2), (2, 1, 3)]
shader = gpu.shader.from_builtin('2D_IMAGE')
batch = batch_for_shader(shader, 'TRIS',
{"pos": coords,
"texCoord": uvs},
indices=indices)
# send image to gpu if it isn't there already
if image.gl_load():
raise Exception()
# texture identifier on gpu
texture_id = image.bindcode
# in case someone disabled it before
bgl.glEnable(bgl.GL_BLEND)
# bind texture to image unit 0
bgl.glActiveTexture(bgl.GL_TEXTURE0)
bgl.glBindTexture(bgl.GL_TEXTURE_2D, texture_id)
shader.bind()
# tell shader to use the image that is bound to image unit 0
shader.uniform_int("image", 0)
batch.draw(shader)
bgl.glDisable(bgl.GL_TEXTURE_2D)
def draw_text(text, x, y, size, color=(1, 1, 1, 0.5)):
font_id = 0
# bgl.glColor4f(*color)
blf.color(font_id, color[0], color[1], color[2], color[3])
blf.position(font_id, x, y, 0)
blf.size(font_id, size, 72)
blf.draw(font_id, text)
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