roar/ENNToolGLCanvasPanel.py
Lucio Andrés Illanes Albornoz eff72be6ef Initial FFmpeg & {GIF,MP4,WEBM,...} support for -o.
ENNToolGLCanvasPanel.py: minor cleanup regarding deprecated calls.
2018-07-03 18:17:23 +02:00

145 lines
6.2 KiB
Python

#!/usr/bin/env python3
#
# ENNTool -- mIRC art animation tool (for EFnet #MiRCART) (WIP)
# Copyright (c) 2018 Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>
# This project is licensed under the terms of the MIT license.
#
# References:
# Wed, 27 Jun 2018 16:02:10 +0200 [1] <https://www.opengl.org/discussion_boards/showthread.php/125843-default-camera?p=954801&viewfull=1#post954801>
# Wed, 27 Jun 2018 16:02:11 +0200 [2] <https://www.opengl.org/discussion_boards/showthread.php/167808-2D-texture-problem-lines-between-textures>
# Wed, 27 Jun 2018 16:02:12 +0200 [3] <https://www.khronos.org/opengl/wiki/How_lighting_works#Good_Settings.>
# Wed, 27 Jun 2018 16:02:13 +0200 [4] <https://www.khronos.org/opengl/wiki/Common_Mistakes>
# Wed, 27 Jun 2018 16:02:14 +0200 [5] <https://www.khronos.org/opengl/wiki/Pixel_Transfer#Pixel_layout>
# Thu, 28 Jun 2018 18:32:50 +0200 [6] <https://stackoverflow.com/questions/18935203/shader-position-vec4-or-vec3>
# Tue, 03 Jul 2018 14:34:57 +0200 [7] <https://gamedev.stackexchange.com/questions/107793/binding-and-unbinding-what-would-you-do>
#
from OpenGL.GL import *
from OpenGL.GL import shaders
import ctypes, wx, wx.glcanvas
class ENNToolGLCanvasPanel(wx.glcanvas.GLCanvas, wx.Panel):
"""XXX"""
# {{{ initOpenGL(self): XXX
def initOpenGL(self):
self.glContext = wx.glcanvas.GLContext(self)
self.SetCurrent(self.glContext)
# [1]
glViewport(0, 0, *self.curSize)
glMatrixMode(GL_PROJECTION)
glLoadIdentity(); glFrustum(-1, 1, -1, 1, 1, 100);
glMatrixMode(GL_MODELVIEW)
glEnable(GL_DEPTH_TEST)
glClearColor(0, 0, 0, 1); glClearDepth(1);
glTranslatef(-5.0, 3.0, -5)
# }}}
# {{{ initShaders(self): XXX
def initShaders(self):
# Fragment shader
fs = shaders.compileShader("""
#version 330 core
in vec2 fgTexCoord;
uniform sampler2D texture;
void main() {
vec4 texel = texture2D(texture, fgTexCoord);
gl_FragColor = vec4(texel.r, texel.g, texel.b, 1.0);
}
""", GL_FRAGMENT_SHADER)
# Vertex shader
vs = shaders.compileShader("""
#version 330 core
layout(location = 0) in vec4 vertex;
layout(location = 1) in vec2 texcoord;
out vec2 fgTexCoord;
uniform mat4 modelview;
uniform mat4 projection;
void main() {
gl_Position = projection * modelview * vertex;
fgTexCoord = texcoord;
}
""", GL_VERTEX_SHADER)
self.shader = shaders.compileProgram(vs, fs)
# }}}
# {{{ renderFrame(self, artTextureId, artVbo, artVboLen): XXX
def renderFrame(self, artTextureId, artVbo, artVboLen):
# Bind VBO and named texture & install shader program object
glBindBuffer(GL_ARRAY_BUFFER, artVbo)
glBindTexture(GL_TEXTURE_2D, artTextureId)
glUseProgram(self.shader)
# Specify modelview and projection matrix & texture unit uniforms for shader programs
modelview, projection = (GLfloat * 16)(), (GLfloat * 16)()
glGetFloatv(GL_MODELVIEW_MATRIX, modelview)
glGetFloatv(GL_PROJECTION_MATRIX, projection)
glUniformMatrix4fv(glGetUniformLocation(self.shader, "modelview"), 1, GL_FALSE, modelview)
glUniformMatrix4fv(glGetUniformLocation(self.shader, "projection"), 1, GL_FALSE, projection)
glUniform1i(glGetUniformLocation(self.shader, "texture"), 0)
# VBO vertices location
glEnableVertexAttribArray(0)
glVertexAttribPointer(0, 3, GL_FLOAT, False, 20, ctypes.c_void_p(0))
glVertexPointer(3, GL_FLOAT, 20, ctypes.c_void_p(0))
# VBO texture coordinates
glEnableVertexAttribArray(1)
glVertexAttribPointer(1, 2, GL_FLOAT, False, 20, ctypes.c_void_p(12))
glTexCoordPointer(2, GL_FLOAT, 20, ctypes.c_void_p(12))
# Clear colour and depth buffer, draw quads from VBO & clear state
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
glDrawArrays(GL_QUADS, 0, artVboLen)
glDisableVertexAttribArray(0)
glBindTexture(GL_TEXTURE_2D, 0)
# }}}
# {{{ renderMiRCART(self, artInfo, artMap, centre=True, canvasCols=100, cubeSize=(0.1, 0.2)): XXX
def renderMiRCART(self, artInfo, artMap, centre=True, canvasCols=100, cubeSize=(0.1, 0.2)):
curPos, vertices, numVertices = [0, 0, 0], [], 0
for numRow in range(len(artMap)):
if centre and (len(artMap[numRow]) < canvasCols):
curPos[0] += (((canvasCols - len(artMap[numRow])) * cubeSize[0]) / 2)
for numCol in range(len(artMap[numRow])):
cubeFg = artMap[numRow][numCol][0]
cubeBg = artMap[numRow][numCol][1]
cubeAttrs = artMap[numRow][numCol][2]
cubeChar = artMap[numRow][numCol][3]
artCell = artInfo[cubeFg][cubeBg][cubeAttrs][cubeChar]
# Top Right, Top Left
vertices += curPos
vertices += artCell[0:2]
vertices += [curPos[0] - cubeSize[0], curPos[1], curPos[2]]
vertices += artCell[2:4]
# Bottom Left, Bottom Right
vertices += [curPos[0] - cubeSize[0], curPos[1] - cubeSize[1], curPos[2]]
vertices += artCell[4:6]
vertices += [curPos[0], curPos[1] - cubeSize[1], curPos[2]]
vertices += artCell[6:8]
curPos[0], numVertices = curPos[0] + cubeSize[0], numVertices + 4
curPos[0], curPos[1] = 0, curPos[1] - cubeSize[1]
artVbo = glGenBuffers(1)
glBindBuffer(GL_ARRAY_BUFFER, artVbo)
glBufferData(GL_ARRAY_BUFFER,
(ctypes.c_float*len(vertices))(*vertices),
GL_STATIC_DRAW)
return artVbo, len(vertices), -curPos[1], numVertices
# }}}
# {{{ __init__(self, parent, size, defaultPos=(24,24)): initialisation method
def __init__(self, parent, size, defaultPos=(24,24)):
super().__init__(parent, pos=defaultPos, size=size)
self.curPos = list(defaultPos); self.curSize = list(size);
# }}}
# vim:expandtab foldmethod=marker sw=4 ts=4 tw=120