def draw(self, projection, view, model, color_shader):
GL.glUseProgram(color_shader.glid)
matrix_location = GL.glGetUniformLocation(color_shader.glid, 'matrix')
# matrix = frustum(-20, 20, -20, 20, -20, 20)
# print(matrix)
matrix = perspective(45, 480 / 640, -20, 100)
# print(matrix)
# matrix_S = scale(0.5)
# matrix[0][0] = matrix_S[0][0]
# matrix[1][1] = matrix_S[1][1]
# matrix[2][1] = matrix_S[2][2]
# matrix[3][3] = matrix_S[3][3]
# matrix = matrix @ matrix_S
matrix = matrix @ projection #rotate(vec(0, 0, 1), 45)
GL.glUniformMatrix4fv(matrix_location, 1, True, matrix)
# draw triangle as GL_TRIANGLE vertex array, draw array call
GL.glBindVertexArray(self.glid)
#GL.glDrawArrays(GL.GL_TRIANGLES, 0, 3)
#use index buffer
GL.glDrawElements(GL.GL_TRIANGLES, self.index.size, GL.GL_UNSIGNED_INT,
None) # 9 indexed verts = 3 triangles
GL.glBindVertexArray(0)
def update_projection(self, fovy, width, height):
"""Update the projection matrix."""
if not self.program_manager:
return
if self.program_manager.program_id:
GL.glUniformMatrix4fv(
GL.glGetUniformLocation(
self.program_manager.program_id, b"projection"),
1, GL.GL_TRUE,
perspective(
fovy, width / height, self.znear, self.zfar))
self.fovy = fovy
def draw(self, projection, view, model, color_shader, color):
super().draw(projection, view, model, color_shader)
# model, projection and view transform
model = np.identity(
4
) # translate(0.4, 0.7, 0) @ rotate(vec(1, 0, 0), 25) @ scale(0.7)
view = lookat(np.array((0, 3, 3), 'f'), np.array((0, 0, 0), 'f'),
np.array((0, 1, 0), 'f'))
projection = perspective(45.0, 4 / 3, 0.1, 100.0)
# transformation
mvp = projection @ view @ model
matrix_location = GL.glGetUniformLocation(color_shader.glid, 'matrix')
GL.glUniformMatrix4fv(matrix_location, 1, True, mvp)
def draw(self, projection, view, model, color_shader, color, scaler,
rotater):
GL.glUseProgram(color_shader.glid)
my_color_location = GL.glGetUniformLocation(color_shader.glid, 'color')
# hard coded color : (0.6, 0.6, 0.9)
GL.glUniform3fv(my_color_location, 1, color)
matrix_location = GL.glGetUniformLocation(color_shader.glid, 'matrix')
GL.glUniformMatrix4fv(
matrix_location, 1, True,
perspective(35, 640 / 480, 0.001, 100) @ translate(0, 0, -1)
@ rotate(vec(0, 1, 0), rotater) @ scale(scaler))
# draw triangle as GL_TRIANGLE vertex array, draw array call
GL.glBindVertexArray(self.glid)
GL.glDrawArrays(GL.GL_TRIANGLES, 0, 3)
GL.glBindVertexArray(0)
def draw(self, projection, view, model, color_shader):
GL.glUseProgram(color_shader.glid)
matrix_location = GL.glGetUniformLocation(color_shader.glid, 'matrix')
matrix = perspective(45, 480 / 640, -20, 100)
matrix = matrix @ projection #rotate(vec(0, 0, 1), 45)
GL.glUniformMatrix4fv(matrix_location, 1, True, matrix)
# draw triangle as GL_TRIANGLE vertex array, draw array call
GL.glBindVertexArray(self.glid)
#use index buffer
GL.glDrawElements(GL.GL_TRIANGLES, self.index.size, GL.GL_UNSIGNED_INT,
None) # 9 indexed verts = 3 triangles
GL.glBindVertexArray(0)
def __init__(self, position, fov, aspect, near, far):
self.position = position
self._ProjectionMatrix = perspective(fov, aspect, near, far)
self._ViewMatrix = lookat(position, vec(0, 0, 0), vec(0, 1, 0))
self._ProjectionViewMatrix = self._ProjectionMatrix @ self._ViewMatrix